Overall back taper forming die for automobile transmission joint gear

Abstract

The invention belongs to the technical field of die equipment, and particularly relates to an integral back taper forming die for an automobile transmission joint gear. Comprising an upper mold body and a lower mold body, a pressing plate is connected to the top end of the upper mold body, a mold supporting seat is arranged at the bottom of the lower mold body, a base plate is connected to the bottom of the mold supporting seat, the upper mold body comprises an upper mold cover, a guide column, a first positioning block and a communicating pipe, and the upper mold cover is composed of a left mold cover body and a right mold cover body; the mounting plate is further provided with an elastic assembly connected with the upper die body and the lower die body, buckling assemblies are further arranged at the centers of the peripheries of the upper die body and the lower die body, and limiting assemblies are further arranged on the left side and the right side of each buckling assembly. According to the integral back taper forming die for the automobile transmission joint gear, when the integral back taper forming die is used, the upper die and the lower die can be separated by releasing the elastic assembly and releasing the buckling assembly, manpower can be saved, meanwhile, the die can be separated vertically, and the die is protected against abrasion.

Description

Technical Field

[0001] The invention belongs to the technical field of mold equipment, and in particular relates to an integral inverted cone forming mold for an automobile transmission engaging gear. Background Art

[0002] Transmission gears often work at high speeds, high loads, and speeds and loads that constantly change. In addition to normal wear, gears can also be damaged by lubricant quality, poor lubrication conditions, improper driving operations, and improper gear assembly positions during maintenance, which can cause gear impact, poor gear tooth engagement, and start-up jitters, which can accelerate gear wear and damage. Gears rely on their own structural dimensions and material strength to withstand external loads, which requires the material to have high strength, toughness, and wear resistance; due to the complex shape of the gears, the gear precision requirements are high, and the material processability is also required. The commonly used material for transmission gears is forged steel, which is formed by die forging, that is, the metal blank is forged and formed by a forging die on a die forging hammer or press. The die forging process has high production efficiency, low labor intensity, precise dimensions, small processing allowances, and can forge forgings with complex shapes.

[0003] For example, a Chinese patent with authorization announcement number CN102125977B discloses an integral inverted cone forming mold for an automobile transmission engagement gear, which consists of an upper mold and a lower mold. The upper mold includes a cover, an upper mold sleeve, an inner pad, an upper spring and an upper mold body. The lower mold includes a pressure plate, a guide sleeve, a tooth mold, a positioning pin, a mold base, a guide column, a partition, a positioning sleeve, a gasket, a lower spring and a push rod. The partition is floatingly supported by the lower spring and the push rod. The inner hole of the guide sleeve is a regular polygonal prism hole that is larger at the top and smaller at the bottom, and the slope of each prism is the same. The tooth mold is formed by arranging tooth pieces around the guide column. The tooth piece is an inclined thin plate of equal width. The outer bevel has the same slope as the inner prism of the guide sleeve and is in the opposite direction. The inner edge is an arc edge that cooperates with the conical section of the guide column, and the upper part of the inner edge is provided with teeth convex inward. The upper end of the tooth die is limited by the pressure plate, and the lower end is supported on the partition plate. When the tooth die is pressed down by the upper die, it moves downward axially and radially along the inclined track composed of the guide sleeve and the guide column. The radial movement of the tooth piece makes the tooth part of the workpiece form a conical shape. The structure is simple and reasonable, the mold is easy to adjust, the operation is simple, the forming accuracy is good, and the production efficiency is high. However, the mold of this structure needs manual assistance to separate the upper die and the lower die to take out the formed parts. Manual operation is not only easy to damage the mold, but also has low efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the above-mentioned background technology and to provide an integral inverted cone forming mold for an automobile transmission engaging gear. When in use, the upper mold can be separated from the lower mold by releasing the elastic component and releasing the snap-fit ​​component, which can save manpower and make the molds straight up and down when separated, protecting the molds from wear.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an integral inverted cone forming mold for an automobile transmission engaging gear, comprising an upper mold body and a lower mold body, the top of the upper mold body is connected to a pressure plate, the bottom of the lower mold body is provided with a mold support seat, the bottom of the mold support seat is connected to a pad, the upper mold body comprises an upper mold cover, a guide column, a first positioning block and a connecting pipe, the upper mold cover is composed of a left mold cover and a right mold cover, the middle parts of the two mold covers are vertically connected to the guide pipe, a group of guide columns are distributed at the lower end of the upper mold body, which is convenient for vertically positioning the upper mold cover in place, a group of first positioning blocks are installed at the lower end edge of the upper mold cover, so that the lower edge of the first positioning block is flush with the lower edge of the upper mold body, a horizontal connecting pipe is also provided in the upper mold body, the lower mold body It includes a lower mold cover, a guide column, a second positioning block, a connecting pipe and a supporting column. The guide column is vertically distributed in the lower mold body, the lower mold cover is sleeved on the guide column, the second positioning block is installed at the upper end of the lower mold body, and the upper edge of the second positioning block is flush with the upper edge of the lower mold body. A horizontal connecting pipe is also provided in the upper mold body, and a supporting column for auxiliary connection is also provided at the bottom of the lower mold body. The mold support seat includes a guard plate, a load-bearing plate and a mounting plate. The guard plate is fixed at the front and rear ends, and the load-bearing plate and the mounting plate are fixed on the pad in turn. The mounting plate is also provided with an elastic component connecting the upper mold body and the lower mold body. A snap-fit ​​component is also provided at the center of the four sides of the upper mold body and the lower mold body, and a limiting component is also provided on the left and right sides of the snap-fit ​​component.

[0006] Furthermore, the elastic component includes a supporting shaft, a spring, a clamping plate, a fixed shaft and a sliding sleeve. One end of the bearing shaft is connected to the mounting plate, and the other end is connected to the clamping plate. The clamping plate is fixedly connected to the upper mold body. A spring is sleeved between the clamping plate and the mounting plate. The fixed shaft is vertically installed on the guard plate. The fixed shaft is slidably connected to a sliding sleeve, and the sliding sleeve is installed at both ends of the upper mold cover.

[0007] Furthermore, the snap-fit ​​assembly includes a fastener fixed at the middle part of the upper mold body and a snap-fit ​​seat fixed at the middle part of the lower mold body, the fastener and the snap-fit ​​seat are snap-fitted and connected in corresponding positions, the fastener consists of a head and a snap-fitting part, wherein the width of the head is larger than the snap-fitting part, the snap-fitting part is vertically longer, and the snap-fitting part is composed of L-frames symmetrically arranged on the left and right sides of the fastener, so that the fastener and the snap-fitting part are snap-fitted and connected from top to bottom.

[0008] Furthermore, the limiting assembly includes a convex block arranged on the upper mold body and a concave block arranged on the lower mold body, wherein the upper end of the concave block is horizontally aligned with the upper edge of the lower mold body, so that the convex block and the concave block are exactly engaged after the upper mold body and the lower mold body are engaged.

[0009] Furthermore, a group of limit columns are equidistantly arranged on the mounting plate, the limit columns are vertically clamped on the mounting plate, and are equidistantly distributed on the bottom of the lower mold body.

[0010] Furthermore, a pressure sensor and a distance sensor are also provided on the mounting plate, and both the pressure sensor and the distance sensor are electrically connected to an external driver.

[0011] Furthermore, an auxiliary traction ring is provided on one side surface of the upper mold body and the lower mold body.

[0012] Furthermore, the protrusions and recesses are fastened to the outer surfaces of the upper mold body and the lower mold body respectively by bolts.

[0013] The beneficial effects of the present invention are: 1) The present invention uses an elastic component to allow the mold support seat and the upper mold body to move up and down along the support axis. At the same time, the fixed shafts and sliding sleeves on both sides can further limit the upper module to move straight up and down relative to the mold bearing seat, so that the upper mold and the lower mold can be separated by releasing the elastic component and releasing the snap-fit ​​component when demolding, which can save manpower and make the molds straight up and down when separated, protecting the molds from wear.

[0014] 2) The present invention also provides a pressure sensor and a distance sensor located on the mounting plate, which can accurately record the pressure and displacement distance of the mold during forging by electrically connecting to an external driver, thereby facilitating accurate control of the pressure and downward pressing distance of the mold molding and improving the molding yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a schematic diagram of a partial mechanism of the present invention;

[0017] Figure 3 for Figure 2 Left view of

[0018] Figure 4 for Figure 3 Right view of;

[0019] Figure 5 for Figure 2 The three-dimensional structure diagram of

[0020] Figure 6 It is a schematic diagram of the connection between the mold mounting seat and the elastic component;

[0021] Figure 7 for Figure 6 main view.

[0022] In the figure: 1. upper mold body; 2. lower mold body; 3. pressure plate; 4. mold support seat; 5. pad; 6. upper mold cover; 7. guide column; 8. first positioning block; 9. connecting pipe; 10. left mold cover; 11. right mold cover; 12. lower mold cover; 13. second positioning block; 14. support column; 15. guard plate; 16. load-bearing plate; 17. mounting plate; 18. elastic component; 19. snap-fit ​​component; 20. limit component; 21. support shaft; 22. spring; 23. clamping plate; 24. fixed shaft; 25. sliding sleeve; 26. fastener; 27. snap-fit ​​seat; 30. L frame; 31. protrusion; 32. concave block; 33. limit column; 34. pressure sensor; 35. distance sensor; 36. auxiliary traction ring. DETAILED DESCRIPTION

[0023] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments.

[0024] Example: Figure 1-7 As shown, an integral inverted cone forming mold for an automobile transmission engaging gear described in the present invention comprises an upper mold body 1 and a lower mold body 2, the top of the upper mold body 1 is connected to a pressure plate 3, the bottom of the lower mold body 2 is provided with a mold support seat 4, the bottom of the mold support seat 4 is connected to a pad 5, the upper mold body 1 comprises an upper mold cover 6, a guide column 7, a first positioning block 8 and a connecting pipe 9, the upper mold cover 6 is composed of a left mold cover 10 and a right mold cover 11, and the middle parts of the two mold covers are vertically connected to the guide pipe, a group of guide columns 7 are distributed at the lower end of the upper mold body 1, which is convenient for vertically positioning the upper mold cover 6 in place, a group of first positioning blocks 8 are installed at the lower end edge of the upper mold cover 6, so that the lower edge of the first positioning block 8 is flush with the lower edge of the upper mold body 1, and a horizontal connecting pipe 9 is also provided in the upper mold body 1, the lower mold body 2 comprises a lower mold cover 12, a guide column 7, a second positioning block 13, connecting pipe 9 and support column 14, the guide column 7 is vertically distributed in the lower mold body 2, the lower mold cover 12 is sleeved on the guide column 7, the second positioning block 13 is installed at the upper end of the lower mold body 2, and the upper edge of the second positioning block 13 is flush with the upper edge of the lower mold body 2, and a horizontal connecting pipe 9 is also provided in the upper mold body 1, and a support column 14 for auxiliary connection is also provided at the bottom of the lower mold body 2. The mold support seat 4 includes a guard plate 15, a load-bearing plate 16 and a mounting plate 17. The guard plate 15 is fixed at the front and rear ends, and the load-bearing plate 16 and the mounting plate 17 are fixed on the pad 5 in turn. The mounting plate 17 is also provided with an elastic component 18 connecting the upper mold body 1 and the lower mold body 2. A limiting component 19 is also provided at the center of the four sides of the upper mold body 1 and the lower mold body 2, and a snap-fit ​​component 20 is also provided on the left and right sides of the snap-fit ​​component 20.

[0025] The elastic component 18 includes a supporting shaft 21, a spring 22, a clamping plate 23, a fixed shaft 24 and a sliding sleeve 25. One end of the bearing shaft is connected to the mounting plate 17, and the other end is connected to the clamping plate 23. The clamping plate 23 is fixedly connected to the upper mold body 1. A spring 22 is sleeved between the clamping plate 23 and the mounting plate 17. The fixed shaft 24 is vertically installed on the guard plate 15. The sliding sleeve 25 is slidably connected to the fixed shaft 24, and the sliding sleeve 25 is installed at both ends of the upper mold cover 6.

[0026] The snap-fit ​​assembly 20 includes a fastener 26 fixed at the middle of the upper mold body 1 and a snap-fit ​​seat 27 fixed at the middle of the lower mold body 2. The fastener 26 and the snap-fit ​​seat 27 are snap-fitted and connected in corresponding positions. The fastener 26 consists of a head and a snap-fitting part, wherein the width of the head is larger than that of the snap-fitting part, and the snap-fitting part is vertically longer. The snap-fitting part consists of an L-frame 30 symmetrically arranged on the left and right sides of the fastener 26, so that the fastener 26 and the snap-fitting part are snap-fitted and connected from top to bottom.

[0027] The limiting assembly 19 includes a protrusion 31 arranged on the upper mold body 1 and a concave block 32 arranged on the lower mold body 2, wherein the upper end of the concave block 32 is horizontally aligned with the upper edge of the lower mold body 2, so that the protrusion 31 and the concave block 32 are exactly engaged after the upper mold body 1 and the lower mold body 2 are engaged.

[0028] A group of limit posts 33 are also equidistantly arranged on the mounting plate 17, and the limit posts 33 are vertically clamped on the mounting plate 17 and equidistantly distributed on the bottom of the lower mold body 2. The limit posts 33 can provide auxiliary support to the bottom of the lower mold body 2 to prevent the pressing force of the pressing plate 3 from crushing the lower mold body 2.

[0029] A pressure sensor 34 and a distance sensor 35 are also provided on the mounting plate 17. Both the pressure sensor 34 and the distance sensor 35 are electrically connected to an external drive. The external drive can detect the pressure and downward pressing distance of the force applied during mold forming, thereby improving the forming accuracy and facilitating the control box to adjust the processing parameters.

[0030] An auxiliary traction ring 36 is also provided on one side surface of the upper mold body 1 and the lower mold body 2. When in use, the movement and installation of the upper mold body 1 and the lower mold body 2 can be conveniently controlled manually through the auxiliary traction ring 36.

[0031] The protrusion 31 and the concave block 32 are respectively fastened to the outer surfaces of the upper mold body 1 and the lower mold body 2 by bolts. When in use, the engagement of the protrusion 31 and the concave block 32 can improve the limiting effect, prevent the upper mold body 1 from being misaligned with the lower mold body 2 when pressed down, causing the molding mold to be scrapped, and improve the product yield.

[0032] For specific use, refer to Figure Figure 1 and Figure 7The upper pressing plate 3 is pressed by a press machine. Since a mold support seat 4 and a pad 5 are installed at the lower end of the lower mold body 2, the lower mold body 2 is supported and fixed by the mold bearing seat and cannot move. The upper mold body 1 is connected to the mold bearing seat for up and down movement through an elastic component 18. When the construction pressure is applied, the upper mold body 1 will move downward and contact the lower mold body 2. During the process, the elastic component will accumulate force. The first positioning block 8 and the second positioning block 13 are respectively installed at the lower end of the upper mold body 1 and the upper end of the lower mold body 2. When the upper mold body 1 moves downward until the upper mold body 1 and the lower mold body 2 are tightly fitted, the first positioning block 8 and the second positioning block 13 are connected. The blocks 13 block each other, so that the upper mold body 1 cannot move further downward. At the same time, the snap-fit ​​assembly 20 and the limit assembly 19 will be snapped together during the process. The upper mold body 1 and the lower mold body 2 are locked together by external bolts or locks for forging and forming. When demolding after processing is completed, the elasticity in the elastic assembly 18 in the contact locking state releases the elastic force to separate the upper mold body 1 from the lower mold body 2. When separating, it will be limited by the fixed shaft 24, the sliding sleeve 25 and the support shaft 21, so that it can only be separated straight up and down, which can protect the mold from wear when it is split and increase its service life.

[0033] The present invention uses an elastic component to allow the mold support seat and the upper mold body to move up and down along the supporting shaft. At the same time, the fixed shafts and sliding sleeves on both sides can further limit the upper module to move straight up and down relative to the mold bearing seat, so that the upper mold can be separated from the lower mold by releasing the elastic component and releasing the snap-fit ​​component when demolding. This can save manpower and allow the molds to move straight up and down when separated, protecting the molds from wear and tear. The structure is simple and easy to use. A pressure sensor and a distance sensor are also provided on the mounting plate. The pressure and displacement distance of the mold during forging can be accurately recorded by electrically connecting to an external drive, which is convenient for accurately controlling the pressure and downward pressing distance of the mold molding, thereby improving the molding yield.

[0034] The above description is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. An integral inverted cone forming die for an automobile transmission engaging gear, characterized in that: The invention comprises an upper mold body (1) and a lower mold body (2), wherein the top of the upper mold body (1) is connected to a pressure plate (3), the bottom of the lower mold body (2) is provided with a mold support seat (4), the bottom of the mold support seat (4) is connected to a pad (5), the upper mold body (1) comprises an upper mold cover (6), a guide column (7), a first positioning block (8) and a connecting pipe (9), the upper mold cover (6) is composed of a left mold cover (10) and a right mold cover (11), the middle parts of the two mold covers are vertically connected to the guide pipe, a group of guide columns (7) are distributed at the lower end of the upper mold body (1), so as to facilitate the vertical positioning of the upper mold cover (6), a group of first positioning blocks (8) are installed at the lower edge of the upper mold cover (6), so that the lower edge of the first positioning block (8) is flush with the lower edge of the upper mold body (1), and the upper A horizontal connecting pipe (9) is also provided in the mold body (1), and the lower mold body (2) includes a lower mold cover (12), a guide column (7), a second positioning block (13), a connecting pipe (9) and a support column (14). The guide column (7) is vertically distributed in the lower mold body (2), the lower mold cover (12) is sleeved on the guide column (7), the second positioning block (13) is installed at the upper end of the lower mold body (2), and the upper edge of the second positioning block (13) is flush with the upper edge of the lower mold body (2). A horizontal connecting pipe (9) is also provided in the upper mold body (1), and a support column (14) for auxiliary connection is also provided at the bottom of the lower mold body (2). The mold support seat (4) includes a guard plate (15), a load-bearing plate (16) and a mounting plate (17).

2. The integral inverted cone forming die for the automobile transmission engaging gear according to claim 1, characterized in that: The guard plate (15) is fixed at the front and rear ends, the load-bearing plate (16) and the mounting plate (17) are fixed on the pad (5) in sequence, the mounting plate (17) is also provided with an elastic component (18) connecting the upper mold body (1) and the lower mold body (2), and a buckle component (19) is also provided at the center of the four sides of the upper mold body (1) and the lower mold body (2), and a limit component (20) is also provided on the left and right sides of the buckle component (19).

3. The integral inverted cone forming die for the automobile transmission engaging gear according to claim 2, characterized in that: The elastic component (18) comprises a supporting shaft (21), a spring (22), a clamping plate (23), a fixed shaft (24) and a sliding sleeve (25); one end of the bearing shaft is connected to the mounting plate (17), and the other end is connected to the clamping plate (23); the clamping plate (23) is fixedly connected to the upper mold body (1); a spring (22) is sleeved between the clamping plate (23) and the mounting plate (17); the fixed shaft (24) is vertically mounted on the guard plate (15); a sliding sleeve (25) is slidably connected to the fixed shaft (24); and the sliding sleeve (25) is mounted on both ends of the upper mold cover (6).

4. The integral inverted cone forming die for the automobile transmission engaging gear according to claim 2, characterized in that: The snap-fit ​​assembly (19) comprises a fastener (26) fixed at the middle of the periphery of the upper mold body (1) and a snap-fit ​​seat (27) fixed at the middle of the periphery of the lower mold body (2), wherein the fastener (26) and the snap-fit ​​seat (27) are snap-fitted in corresponding positions, the fastener (26) is composed of a head and a snap-fitting portion, wherein the width of the head is greater than that of the snap-fitting portion, the snap-fitting portion is vertically longer, and the snap-fitting portion is composed of L-frames (30) symmetrically arranged on the left and right of the fastener (26), so that the fastener (26) and the snap-fitting portion are snap-fitted from top to bottom.

5. The integral inverted cone forming die for the automobile transmission engaging gear according to claim 2, characterized in that: The limiting assembly (20) comprises a convex block (31) arranged on the upper mold body (1) and a concave block (32) arranged on the lower mold body (2), wherein the upper end of the concave block (32) is horizontally aligned with the upper edge of the lower mold body (2), so that the convex block (31) and the concave block (32) are engaged after the upper mold body (1) and the lower mold body (2) are engaged.

6. The integral inverted cone forming die for the automobile transmission engaging gear according to claim 1, characterized in that: A group of limiting columns (33) are also equidistantly arranged on the mounting plate (17); the limiting columns (33) are vertically clamped on the mounting plate (17) and are equidistantly distributed on the bottom of the lower mold body (2).

7. The integral inverted cone forming die for the automobile transmission engaging gear according to claim 1, characterized in that: The mounting plate (17) is also provided with a pressure sensor (34) and a distance sensor (35), and both the pressure sensor (34) and the distance sensor (35) are electrically connected to an external driver.

8. The integral inverted cone forming die for the automobile transmission engaging gear according to claim 1, characterized in that: An auxiliary traction ring (36) is also provided on one side surface of the upper mold body (1) and the lower mold body (2).

9. The integral inverted cone forming die for the automobile transmission engaging gear according to claim 5, characterized in that: The convex block (31) and the concave block (32) are respectively fastened and connected to the outer surfaces of the upper mold body (1) and the lower mold body (2) by bolts.

Images