A forming die for internal gears of automobile gearbox

Abstract

The present invention provides a forming die for an internal gear of an automobile gearbox, characterized in that it comprises an upper die, a cylinder, a side die, a lower die, a propulsion mechanism, and a connecting mechanism. A cylinder is installed on the top of the upper die, and the cylinder is connected to an external air compressor. A lower die is arranged on the lower side of the upper die, and a side die is welded on the side wall of the lower die. A connecting mechanism and a propulsion mechanism are arranged inside the side die, and a propulsion mechanism is arranged inside the lower die. The present invention adds a propulsion mechanism, thereby avoiding the existing phenomenon of manually using clamps to remove waste from the lower die. The process of using a propulsion rod to eject the waste generated by the present invention does not require manual participation, thereby saving a lot of labor costs, reducing manpower output, saving time, and improving the efficiency of the present invention in gear forming.

Description

Technical Field

[0001] The invention relates to the technical field of gear forming, in particular to a forming die for an internal gear of an automobile gearbox. Background Art

[0002] Automobile gearbox is a set of transmission devices used to coordinate the engine speed and the actual driving speed of the wheels, and to bring out the best performance of the engine. Gears are mechanical elements with teeth on the wheel rim that can continuously mesh to transmit motion and power. They are mechanical parts with teeth that can mesh with each other. In the current rapid development of industry, the use of gears has become particularly frequent, especially in automobile gearboxes, where a large number of various gear transmissions are used.

[0003] The gear forming mold in the prior art is a mold with a cylinder connected to the top of the upper mold. Under the action of the cylinder, the upper mold is driven downward to stamp the workpiece on the lower mold, thereby achieving the purpose of gear forming. However, after one stamping and forming of the existing molding mold, the molded gear falls directly into the inside of the collection box from the discharge port of the lower mold. However, the waste generated during the gear forming and stamping process remains on the lower mold. It is necessary to manually use clamps to remove the waste from the lower mold, and then manually load the material before the next gear stamping and forming can be carried out. This process is all manually operated, and the frequent process of clamping and loading the waste waste waste wastes, which wastes a lot of time and reduces the efficiency of gear forming. In addition, since the waste material is mostly metal products, the labor intensity of the staff will increase during the long-term manual clamping of the waste, which increases the output of manpower. Summary of the invention

[0004] According to the above technical problems, the present invention provides a forming die for an internal gear of an automobile gearbox, characterized in that it comprises an upper die, a cylinder, a side die, a lower die, a propulsion mechanism, and a connection mechanism, wherein a cylinder is installed on the top of the upper die, and the cylinder is connected to an external air compressor, a lower die is arranged on the lower side of the upper die, a side die is welded on the side wall of the lower die, a connection mechanism is arranged inside the side die, and a propulsion mechanism is arranged inside the lower die;

[0005] The connecting mechanism is composed of a movable plate, a rotating shaft, a movable rod, a spring rod, a connecting rod and a rack. The top of the side mold is installed with a rotating shaft, and the movable plate is installed at the rotating shaft. A connecting rod groove is opened inside the side mold, and a movable rod is arranged inside the connecting rod groove. The left end of the movable rod is in contact with the movable plate, and the left end of the spring rod is welded to the right end of the movable rod. A spring rod groove is opened on the right side wall of the side mold, and the spring rod groove and the connecting rod groove are opened on the same straight line. The right end of the spring rod passes through the spring rod groove opened on the right side wall of the side mold and extends to the outside of the side mold. The outer side wall of the spring rod is sleeved with a spring, one end of the spring is welded to the movable rod, and the other end of the spring is welded to the right end of the connecting rod groove. A connecting rod is welded to the lower end of the movable rod, and the cross-section of the connecting rod is an "L"-shaped structure, and a rack is welded to the top of the connecting rod.

[0006] The propulsion mechanism is composed of a gear, a propulsion rod, an anti-slip pad, a mounting plate, a positioning rod and a locking plate. A gear groove is provided inside the lower mold, a gear is installed inside the gear groove through a gear connecting shaft, the lower end of the gear is meshed with a rack welded on the top of the connecting rod, a propulsion rod is provided inside the left side of the gear groove, a rack is welded on the right end of the propulsion rod, the left end of the gear is meshed with a propulsion rod through the rack, an anti-slip pad is installed on the upper end of the propulsion rod through the gear groove, a movable opening is provided at the lower end of the propulsion rod, a positioning groove is provided inside the lower mold, a positioning rod is provided in the positioning groove, a locking groove is provided on the positioning rod, a locking plate is provided inside the locking groove, one end of a spring is welded to the left end of the locking plate, The other end of the spring is welded inside the locking groove, the upper end of the positioning rod passes through the positioning groove and extends to the upper side of the lower mold, the lower end of the positioning rod is welded with the upper end of the spring rod, and a spring rod hole is provided at the bottom of the lower mold, and the spring rod hole and the positioning groove are provided on the same straight line, the lower end of the spring rod passes through the spring rod groove provided at the bottom of the lower mold and extends to the bottom of the lower mold, the outer side wall of the spring rod is sleeved with a spring, one end of the spring is welded to the positioning rod, and the other end of the spring is welded to the lower end of the positioning groove, a locking through hole is provided on the right side wall of the positioning groove, the left end of the connecting rod passes through the movable opening provided at the lower end of the push rod and is arranged inside the locking through hole, and the locking through hole and the locking groove provided on the positioning rod are on the same straight line.

[0007] The beneficial effects of the present invention are:

[0008] The present invention adds a pushing mechanism and a connecting mechanism. In the process of driving the upper mold to descend, the upper mold will squeeze the movable plate located on the left side of the side mold, and the movable plate squeezes the movable rod to make it move to the right. The connecting rod connected to the movable rod drives the pushing rod to move downward through the meshing effect between the gear rack, so that the pushing rod is stored in the interior of the lower mold and will not interfere with the workpiece forming process. After the workpiece is processed, the cylinder drives the upper mold to move upward, and the rising upper mold no longer applies a squeezing force to the movable plate. The movable rod moves to the left under the action of the spring, driving the movable rod to move to the left, so that the moving movable rod drives the pushing rod to move upward under the action of the meshing between the gear rack. At this time, the waste material after processing is ejected under the action of the upward moving pushing rod. This process does not require manual operation, avoids the occurrence of the existing phenomenon that the waste material needs to be manually removed from the lower mold by clamping pliers, and uses the pushing rod to eject the waste material generated by the present invention without manual participation, thereby saving a lot of labor costs, reducing manpower output, saving time, and improving the efficiency of gear forming of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0010] Figure 2 It is a schematic diagram of the gear of the present invention;

[0011] Figure 3 This is an enlarged view of point A of the present invention;

[0012] Figure 4 The present invention is used in conjunction with the diagram;

[0013] Figure 5 It is an enlarged view of point B of the present invention.

[0014] As shown in the figure: 1-upper die, 11-cylinder, 2-side die, 21-movable plate, 22-rotating shaft, 23-movable groove, 24-movable rod, 25-spring rod, 26-spring, 27-connecting rod groove, 28-connecting rod, 3-lower die, 31-gear groove, 32-gear, 33-rack, 34-push rod groove, 35-push rod, 36-anti-slip pad, 37-mounting plate, 38-movable port, 4-positioning rod, 41-locking plate, 42-locking through hole. DETAILED DESCRIPTION

[0015] Example 1

[0016] The present invention provides a molding die for an internal gear of an automobile gearbox, which is characterized by comprising an upper die 1, a cylinder 11, a side die 2, a lower die 3, a propulsion mechanism, a connection mechanism, and an auxiliary stabilization mechanism. The cylinder 11 is installed on the top of the upper die 1, and the cylinder 11 is connected to an external air compressor. The lower die 3 is arranged on the lower side of the upper die 1, and the side die 2 is welded on the side wall of the lower die 3. The side die 2 has a connection mechanism inside, and the lower die 3 has a propulsion mechanism inside.

[0017] The connecting mechanism is composed of a movable plate 21, a rotating shaft 22, a movable rod 24, a spring rod 25, a spring 26, a connecting rod 28, and a rack. The rotating shaft 22 is installed on the top of the side mold 2, and the movable plate 21 is installed at the rotating shaft 22. A connecting rod groove 27 is opened inside the side mold 2, and a movable rod 24 is arranged inside the connecting rod groove 27. The left end of the movable rod 24 contacts the movable plate 21, and the left end of the spring rod 25 is welded to the right end of the movable rod 24. A spring rod 25 groove is opened on the right side wall of the side mold 2. The groove of the spring rod 25 and the connecting rod groove 27 are opened on the same straight line. The right end of the spring rod 25 passes through the groove of the spring rod 25 opened on the right side wall of the side mold 2 and extends to the outside of the side mold 2. The outer wall of the spring rod 25 is sleeved with a spring 26. One end of the spring 26 is welded to the movable rod 24, and the other end of the spring 26 is welded to the right end of the connecting rod groove 27. The lower end of the movable rod 24 is welded with a connecting rod 28. The cross section of the connecting rod 28 is an "L"-shaped structure, and a rack is welded on the top of the connecting rod 28.

[0018] The propulsion mechanism consists of a gear 32, a propulsion rod 35, an anti-skid pad 36, a mounting plate 37, a positioning rod 4, and a locking plate 41. A gear groove 31 is provided inside the lower mold 3. A gear 32 is installed inside the gear groove 31 through a gear 32 connecting shaft. The lower end of the gear 32 is meshed with a rack welded to the top of the connecting rod 28. A propulsion rod 35 is provided inside the left side of the gear groove 31. A rack is welded on the right end of the propulsion rod 35. The left end of the gear 32 is meshed with the propulsion rod 35 through the rack. The upper end of the propulsion rod 35 is installed with an anti-skid pad 36 through the gear groove 31. A movable opening 38 is provided at the lower end of the propulsion rod 35. A positioning groove is provided inside the lower mold 3. A positioning rod 4 is provided in the positioning groove. A locking groove is provided on the positioning rod 4. A locking plate 41 is provided inside the locking groove. A spring 26 is welded to the left end of the locking plate 41. The lower end of the positioning rod 4 is welded with the upper end of the spring rod 25, and the bottom of the lower mold 3 is provided with a spring rod 25 hole, and the spring rod 25 hole and the positioning groove are provided on the same straight line. The lower end of the spring rod 25 passes through the spring rod 25 groove provided at the bottom of the lower mold 3 and extends to the bottom of the lower mold 3. The outer side wall of the spring rod 25 is sleeved with a spring 26, and one end of the spring 26 is welded to the positioning rod 4, and the other end of the spring 26 is welded to the lower end of the positioning groove. A locking through hole 42 is provided on the right side wall of the positioning groove, and the left end of the connecting rod 28 passes through the movable opening 38 provided at the lower end of the pushing rod 35 and is arranged inside the locking through hole 42, and the locking through hole 42 and the locking groove provided on the positioning rod 4 are on the same straight line.

[0019] Example 2

[0020] When the present invention is in use, the workpiece is manually placed on the positioning rod 4 and the pushing rod 35 of the lower mold 3. At this time, the positioning rod 4 and the pushing rod 35 are in the same straight line. The positioning rod 4 and the pushing rod 35 lift the workpiece together, and the cylinder 11 is manually opened to connect an external air compressor. The upper mold 1 moves downward under the action of the cylinder 11. During the movement, the upper mold 1 will squeeze the movable plate 21 on the left side of the side mold 2. The movable plate 21 moves to the right under the action of the rotating shaft 22. The movable plate 21 moving to the right will drive the connecting rod 28 to move to the right together. When the connecting rod 28 moves, the gear 32 will rotate together through the rack. Through the meshing effect of the gear 32 and the rack, the rotating gear 32 drives the pushing rod 35 to descend together. At this time, the pushing rod 35 leaves the locking through hole 42 opened on the right side wall of the positioning groove. During the descent of the upper mold 1, the pushing rod 35 will be stored in the interior of the lower mold 3 without interfering with the workpiece During the forming process, the upper mold 1 squeezes the positioning rod 4 at the same time, shrinking the positioning rod 4 to the inside of the lower mold 3. The locking plate 41, under the action of the spring 26 inside the positioning rod 4, will push the locking plate 41 to limit it in the locking through hole 42 opened on the right side wall of the positioning groove. After the upper mold 1 and the lower mold 3 have completed processing of the workpiece, the cylinder 11 drives the upper mold 1 to move upward, so that the upper mold 1 no longer squeezes the movable plate 21. At this time, the movable rod 24 moves to the left under the action of the spring 26, so that the movable rod 24 moves upward under the action of the gear 32 rack, and the waste generated by the forming of the gear 32 will be left on the lower mold 3. At this time, the waste after processing is ejected under the action of the upward moving push rod. At the same time, the addition of the rubber anti-skid pad 36 in the present invention prevents the waste from sliding away during the process of fixing the waste, thereby ensuring the blanking efficiency of the present invention.

[0021] In addition, after the waste is ejected, the push rod 35 returns to its original position. At this time, the leftmost end of the connecting rod 28 is located in the locking through hole 42 opened on the right side wall of the positioning groove, thereby pushing the locking plate 41 to the left. Under the action of the spring 26 at the lower end of the positioning rod 4, the positioning rod 4 pops up upward, so that after the next processing, the positioning rod 4 and the push rod 35 remain in the same straight line.

[0022] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. The various components mentioned in the present invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A forming die for an internal gear of an automobile gearbox, characterized in that It includes an upper mold, a cylinder, a side mold, a lower mold, a propulsion mechanism, and a connection mechanism. The top of the upper mold is equipped with a cylinder, and the cylinder is connected to an external air compressor. The lower side of the upper mold is provided with a lower mold, and the side mold is welded on the side wall of the lower mold. The side mold has a connection mechanism inside, and the lower mold has a propulsion mechanism inside. The connecting mechanism is composed of a movable plate, a rotating shaft, a movable rod, a spring rod, a connecting rod and a rack. The top of the side mold is installed with a rotating shaft, and the movable plate is installed at the rotating shaft. A connecting rod groove is opened inside the side mold, and a movable rod is arranged inside the connecting rod groove. The left end of the movable rod is in contact with the movable plate, and the left end of the spring rod is welded to the right end of the movable rod. A spring rod groove is opened on the right side wall of the side mold, and the spring rod groove and the connecting rod groove are opened on the same straight line. The right end of the spring rod passes through the spring rod groove opened on the right side wall of the side mold and extends to the outside of the side mold. The outer side wall of the spring rod is sleeved with a spring, one end of the spring is welded to the movable rod, and the other end of the spring is welded to the right end of the connecting rod groove. A connecting rod is welded to the lower end of the movable rod, and a rack is welded to the top of the connecting rod. The propulsion mechanism is composed of a gear, a propulsion rod, an anti-slip pad, a mounting plate, a positioning rod and a locking plate. A gear groove is provided inside the lower mold, a gear is installed inside the gear groove through a gear connecting shaft, the lower end of the gear is meshed with a rack welded on the top of the connecting rod, a propulsion rod is provided inside the left side of the gear groove, a rack is welded on the right end of the propulsion rod, the left end of the gear is meshed with a propulsion rod through the rack, an anti-slip pad is installed on the upper end of the propulsion rod through the gear groove, a movable opening is provided at the lower end of the propulsion rod, a positioning groove is provided inside the lower mold, a positioning rod is provided in the positioning groove, a locking groove is provided on the positioning rod, a locking plate is provided inside the locking groove, one end of a spring is welded to the left end of the locking plate, The other end of the spring is welded inside the locking groove, the upper end of the positioning rod passes through the positioning groove and extends to the upper side of the lower mold, the lower end of the positioning rod is welded with the upper end of the spring rod, and a spring rod hole is provided at the bottom of the lower mold, and the spring rod hole and the positioning groove are provided on the same straight line, the lower end of the spring rod passes through the spring rod groove provided at the bottom of the lower mold and extends to the bottom of the lower mold, the outer side wall of the spring rod is sleeved with a spring, one end of the spring is welded to the positioning rod, and the other end of the spring is welded to the lower end of the positioning groove, a locking through hole is provided on the right side wall of the positioning groove, the left end of the connecting rod passes through the movable opening provided at the lower end of the push rod and is arranged inside the locking through hole, and the locking through hole and the locking groove provided on the positioning rod are on the same straight line.

2. A forming die for an internal gear of an automobile transmission as claimed in claim 1, characterized in that The cross section of the connecting rod is an "L" shaped structure.

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