Ejection mechanism for heavy truck beam machining die

Abstract

The utility model relates to the technical field of molds, and discloses an ejection mechanism for a heavy truck cross beam machining mold, the ejection mechanism comprises a forming block located on a lower mold and used for cross beam forming, the bottom of the forming block is sequentially provided with a driving plate and a fixing plate in the vertical direction, and a plurality of ejection supporting rods are evenly distributed between the top of the driving plate and the bottom of the forming block; a lifting part used for driving the driving plate to move in the vertical direction is arranged between the driving plate and the fixing plate, when the lifting part drives the driving plate to move upwards, the driving plate pushes the multiple top supporting rods to move upwards, and the forming block is pushed by the multiple top supporting rods to move upwards synchronously; and the forming block bears the forming cross beam to be separated from other modules on the lower die. The demolding device has the effect of improving the integrity of the cross beam after demolding.

Description

Technical Field

[0001] The present application relates to the field of mold technology, and in particular to an ejection mechanism for a mold for processing a heavy truck crossbeam. Background Art

[0002] The crossbeams used in heavy trucks are usually formed by die stamping. Due to the complex shape of the crossbeam and the high degree of refinement required, it is difficult to successfully stamp the crossbeam in one go using a stamping die. Therefore, the stamping dies required for the crossbeam forming process are generally prepared in multiple steps corresponding to the forming process of the important parts of the crossbeam. According to the step-by-step forming sequence of the crossbeam, the corresponding stamping die is used to stamp the crossbeam material at specific steps until the crossbeam is stamped into a qualified product for use in heavy trucks.

[0003] In the prior art, during the stamping and forming process of the beam, the semi-finished beam after one stamping is easily stuck when the robot unloads it. At this time, it is necessary to manually pry the stuck semi-finished beam out of the mold cavity with the help of tools. However, the prying method not only affects the material replacement efficiency, but also easily leaves scratches on the material surface of the beam. In severe cases, it will also cause damage to the structure of the formed beam, thereby reducing the final qualification level of the finished beam. Utility Model Content

[0004] In order to improve the integrity of the beam after demoulding, the present application provides an ejection mechanism for a heavy truck beam processing mold.

[0005] The present application provides an ejection mechanism for a heavy truck beam processing die using the following technical solution:

[0006] A kind of ejection mechanism for heavy truck beam processing mold, including a molding block located on the lower mold for molding the beam, the bottom of the molding block is vertically arranged with a driving plate and a fixed plate in sequence, a plurality of top support rods are evenly distributed between the top of the driving plate and the bottom of the molding block, and the plurality of top support rods are vertically arranged, and a lifting member for driving the driving plate to move vertically is arranged between the driving plate and the fixed plate. When the lifting member drives the driving plate to move up, the driving plate pushes the plurality of top support rods to move up, and the molding block moves up synchronously under the push of the plurality of top support rods. At this time, the molding block carries the molding beam to separate from other modules on the lower mold.

[0007] By adopting the above technical scheme, when the beam in the stamping die needs to be unloaded after stamping, the lifting member is used to drive the driving plate to move up, and the driving plate moves up to push a number of top support rods to move up. The forming block moves up synchronously under the push of the several top support rods. At this time, the forming block carries the forming beam and moves up to separate from the lower die, so that part of the forming beam can be suspended in the air. The suspended part of the forming beam makes it easy for the robot to remove the forming beam from the forming block, thereby reducing the possibility of damage to the forming beam during the unloading process, thereby improving the integrity of the beam after demolding.

[0008] Optionally, the lifting members are a plurality of nitrogen springs evenly distributed between the driving plate and the fixed plate, each of the nitrogen springs is vertically arranged, and the bottom of the cylinder of each nitrogen spring is arranged at the top of the fixed plate, and the top of the piston rod of each nitrogen spring is arranged at the bottom of the driving plate.

[0009] By adopting the above technical scheme, the nitrogen spring has the advantages of small size, high elasticity, long life, high safety and low cost. The gas pressure in the nitrogen spring can be manually or mechanically controlled as needed to adapt to different working conditions and load conditions. In addition, the elastic force curve of the nitrogen spring is smooth, and the rising speed of the driving plate can be delayed in the process of driving the driving plate to rise, so that the forming block that receives the forming beam can be smoothly ejected from the lower mold, thereby ensuring the safety of the stamping mold operating environment.

[0010] Optionally, a positioning rod is vertically arranged at the top of the forming block corresponding to the positioning groove of the semi-finished crossbeam.

[0011] By adopting the above technical solution, the setting of the positioning rod can prevent the semi-finished product of the beam from shifting during the stamping process, thereby improving the accuracy of the stamping die in further stamping the semi-finished beam.

[0012] Optionally, L-shaped guide plates are provided around the bottom of the forming block, and the guide plates are fixed on the lower mold on one side perpendicular to the bottom surface of the forming block. A guide hole is vertically opened on one side of the guide plate parallel to the bottom surface of the forming block, and a guide rod is vertically slid through the guide hole, and the top of the guide rod is fixed on the bottom of the forming block.

[0013] By adopting the above technical solution, the guide hole provides guidance for the forming block when it moves up and down under the support of a number of top support rods, further limits the sliding trajectory of the limited forming block, and improves the stability of the stamping die during use.

[0014] Optionally, a plurality of support rod groups are vertically arranged between the driving plate and the fixed plate, each of the support rod groups includes a supporting top rod arranged at the bottom of the driving plate and a supporting sleeve slidably mounted on the supporting top rod, the bottom of the supporting sleeve is arranged on the top wall of the fixed plate, and sliding grooves are vertically provided on the opposite side walls of the supporting sleeve, the sliding grooves are connected to the inner cavity of the supporting sleeve, and a mounting seat is arranged on the top wall of the fixed plate, the lifting member includes a rotating rod arranged on the mounting seat and rotating in a horizontal direction, and a tilting rod mounted on the rotating rod, the tilting rod passes through the supporting sleeve through the sliding groove, and the rod body of the tilting rod is arranged to abut against the bottom of the supporting top rod.

[0015] By adopting the above technical solution, the rotating rod is driven to rotate, and the tilting rod performs a circular motion with the rotating axis of the rotating rod as the center. When the tilting rod rotates upward, the tilting rod contacts the bottom of the supporting top rod in the supporting sleeve and lifts up the supporting top rod, and the driving plate then moves upward; when the tilting rod rotates downward, the driving plate moves downward along the guide of the inner cavity of the supporting sleeve due to its own gravity, and during the movement, the bottom of the supporting top rod always contacts the tilting rod.

[0016] Optionally, a positioning roller is provided at the bottom of the supporting top rod parallel to the axial direction of the rotating rod, and a U-shaped plug-in portion is provided at the end of the lifting rod away from the rotating rod corresponding to the positioning roller. When the lifting rod is supporting the top rod, the positioning roller is always located inside the plug-in portion, and the positioning roller and the plug-in portion are slidably fitted together.

[0017] By adopting the above technical solution, the positioning roller is always located in the plug-in part, so that when the tilting rod rotates downward, the inner side wall of the plug-in part pushes the positioning roller, thereby driving the supporting top rod to move downward synchronously. The sliding fit between the positioning roller and the plug-in part reduces the friction generated by the inner side wall of the plug-in part on the tilting rod and the mutual rotation of the positioning roller when pushing the positioning roller to move. In addition, the arrangement of the positioning roller and the plug-in part facilitates the timely resetting of the drive plate, reducing the possibility that the friction generated between the forming block and other modules of the lower mold is greater than the gravity during the downward movement of the forming block, thereby causing the forming block to be unable to be reset.

[0018] Optionally, a motor is vertically arranged on the mounting seat, a worm is coaxially arranged on the upward top end of the output shaft, and a worm wheel meshing with the worm is sleeved on the rotating rod.

[0019] By adopting the above technical solution, the motor is driven to work, and the output shaft of the motor starts to rotate, thereby driving the worm to rotate. At this time, the worm wheel sleeved on the rotating rod rotates due to meshing with the worm, so that the rotating rod starts to rotate.

[0020] Optionally, a plurality of reinforcing ribs are provided on the tilting rod.

[0021] By adopting the above technical solution, the rod body of the tilting rod is used as a force arm, with the axis of the rotating rod as a fulcrum, so as to tilt and support the top rod, which needs to withstand a large force. The setting of the reinforcing ribs can improve the strength of the tilting rod and reduce the possibility of the tilting rod breaking due to the top support of the top rod.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. When the beam in the stamping die needs to be unloaded after being stamped, the lifting member is used to drive the driving plate to move up, and the driving plate moves up to push a number of top support rods to move up. The forming block moves up synchronously under the push of the top support rods. At this time, the forming block carries the forming beam and moves up to separate from the lower die, so that part of the forming beam can be suspended. The suspended part of the forming beam is convenient for the robot to remove the forming beam from the forming block, reducing the possibility of the forming beam being damaged during the unloading process, thereby improving the integrity of the beam after demoulding;

[0024] 2. Nitrogen springs have the advantages of small size, high elasticity, long life, high safety, and low cost. The gas pressure in the nitrogen spring can be manually or mechanically controlled as needed to adapt to different working conditions and load conditions. The elastic curve of the nitrogen spring is gentle, and the speed of the driving plate rising can be delayed in the process of driving the driving plate to rise, so that the forming block that receives the forming beam can be smoothly ejected from the lower mold, ensuring the safety of the stamping mold operating environment;

[0025] 3. The setting of the positioning rod can prevent the semi-finished product of the beam from shifting during the stamping process, thereby improving the accuracy of the stamping die in further stamping the semi-finished beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure of Example 2 of the present application.

[0028] Figure 3 It is an exploded schematic diagram showing the connection relationship between the drive plate, the fixed plate and the support rod group in Example 2 of the present application.

[0029] Description of reference numerals:

[0030] 1. Forming block; 11. Positioning rod; 12. Guide rod; 2. Drive plate; 3. Fixed plate; 4. Top support rod; 5. Lifting member; 51. Nitrogen spring; 52. Rotating rod; 521. Worm gear; 53. Crank rod; 531. Plug-in part; 6. Guide plate; 61. Guide hole; 7. Support rod group; 71. Support top rod; 711. Positioning roller; 72. Support sleeve; 721. Slide groove; 8. Mounting seat; 81. Motor; 811. Worm; 9. Reinforcing ribs. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The embodiment of the present application discloses an ejection mechanism for a heavy truck beam processing mold.

[0033] Example 1

[0034] Reference Figure 1 A ejection mechanism for a heavy truck cross beam processing mold includes a forming block 1. The forming block 1 is used for forming the cross beam and is set on the lower mold. A positioning rod 11 is fixedly arranged vertically on the top of the forming block 1. The positioning rod 11 is plugged into the positioning groove of the cross beam semi-finished product. A driving plate 2 and a fixing plate 3 are arranged vertically in sequence at the bottom of the forming block 1. A plurality of top support rods 4 are evenly distributed between the top of the driving plate 2 and the bottom of the forming block 1. In this embodiment, six top support rods 4 are taken as an example. Each top support rod 4 is abutted between the driving plate 2 and the fixing plate 3. A lifting member 5 is arranged between the driving plate 2 and the fixing plate 3.

[0035] Reference Figure 1 When the beam in the stamping die needs to be unloaded after stamping, the lifting member 5 is used to drive the driving plate 2 to move upward. The driving plate 2 moves upward, thereby pushing the six top support rods 4 to move upward synchronously. The forming block 1 moves upward synchronously under the push of the six top support rods 4. At this time, the forming block 1 carries the forming beam and moves up to separate from the lower die, so that part of the forming beam can be suspended in the air, and the robot successfully removes the forming beam from the forming block 1 through the suspended part of the forming beam.

[0036] Reference Figure 1 In order to improve the stability of the stamping device during material unloading, L-shaped guide plates 6 are distributed around the bottom of the forming block 1. One side of each guide plate 6 perpendicular to the bottom surface of the forming block 1 is fixed on the lower mold by bolts, and a guide hole 61 is vertically opened on the upper side of the guide plate 6 parallel to the bottom surface of the forming block 1. A guide rod 12 is slidably penetrated in each guide hole 61, and the top of the guide rod 12 is fixedly set on the bottom of the forming block 1.

[0037] Reference Figure 1 The lifting member 5 can be a driving accessory such as a cylinder or a nitrogen spring 51. The lifting member 5 in this embodiment is five nitrogen springs 51 evenly distributed between the driving plate 2 and the fixed plate 3. Each nitrogen spring 51 is vertically arranged, and the bottom of the cylinder body of each nitrogen spring 51 is fixedly arranged on the top wall of the fixed plate 3, and the top of the piston rod of each nitrogen spring 51 is fixedly arranged on the bottom wall of the driving plate 2.

[0038] The implementation principle of the ejection mechanism of a heavy truck beam processing mold in an embodiment of the present application is as follows: when the beam in the stamping mold needs to be unloaded after stamping, the upper mold is opened. At this time, the air pressure in the nitrogen spring 51 is large enough to drive the piston rod on the nitrogen spring 51 to extend, and the top end of the piston rod supports the driving plate 2 to move the driving plate 2 upward. At the same time, the upward movement of the driving plate 2 pushes a number of supporting rods 4 to move upward, and the forming block 1 moves upward synchronously under the push of the number of supporting rods 4. At this time, the forming block 1 carries the forming beam and moves it up to separate from the lower mold, so that part of the forming beam can be suspended. The suspended part of the forming beam makes it easy for the robot to remove the forming beam from the forming block 1, thereby reducing the possibility of damage to the forming beam during the unloading process, thereby improving the integrity of the beam after demolding.

[0039] Example 2

[0040] Reference Figure 2 , the difference between this embodiment and embodiment 1 is that the lifting member 5 is different. In this embodiment, four support rod groups 7 are vertically arranged between the driving plate 2 and the fixed plate 3, and the four support rod groups 7 are respectively arranged at four right angles on the top of the fixed plate 3. Each support rod group 7 includes a support top rod 71 and a support sleeve 72, the top of the support top rod 71 is fixedly arranged at the bottom of the driving plate 2, the bottom of the support sleeve 72 is fixedly arranged on the top wall of the fixed plate 3, the support top rod 71 is vertically inserted into the support sleeve 72, and the support top rod 71 and the support sleeve 72 are slidably matched.

[0041] Reference Figure 2 and Figure 3 , a mounting seat 8 is fixedly arranged on the top wall of the fixing plate 3, and four support sleeves 72 are vertically provided with slide grooves 721 on the side walls parallel to the mounting seat 8, and the slide grooves 721 are connected with the inner cavity of the support sleeve 72. The lifting member 5 in this embodiment includes a rotating rod 52 and a tilting rod 53, two rotating rods 52 are arranged in parallel, and the two rotating rods 52 are rotatably arranged on the mounting seat 8 along the horizontal direction, and one tilting rod 53 is arranged corresponding to each supporting sleeve 72, and a reinforcing rib 9 is fixedly arranged on the surface of each tilting rod 53, and the tilting rod 53 located on the same side of the rotating rod 52 is fixedly sleeved on the rotating rod 52 closest to it.

[0042] Reference Figure 2 and Figure 3 A U-shaped plug-in portion 531 is fixedly provided at one end of the tilting rod 53 away from the rotating rod 52, and the plug-in portion 531 is provided with a support sleeve 72 through a slide groove 721. A positioning roller 711 is provided at the bottom of the supporting top rod 71 parallel to the axial rotation of the rotating rod 52. The positioning roller 711 is plugged into the plug-in portion 531, and the positioning roller 711 and the plug-in portion 531 are slidably matched. The tilting rod 53 is always located inside the plug-in portion 531 during the process of supporting the top rod 71.

[0043] Reference Figure 3 A motor 81 is vertically fixedly arranged on the mounting seat 8 between the two rotating rods 52 , and a worm 811 is coaxially fixedly sleeved on the top end of the output shaft of the motor 81 facing upward, and worm wheels 521 are fixedly sleeved on the two rotating rods 52 , and the two worm wheels 521 are meshed with the worm 811 .

[0044] The implementation principle of Example 2 is as follows: the driving motor 81 works, at which time the output shaft of the motor 81 starts to rotate, thereby driving the worm 811 to rotate. At this time, the worm wheel 521 mounted on the rotating rod 52 rotates due to the engagement with the worm 811, thereby causing the rotating rod 52 to start rotating; when the rotating rod 52 rotates, the tilting rod 53 performs a circular motion with the rotating axis of the rotating rod 52 as the center. When the tilting rod 53 rotates upward, the inner side wall of the plug-in portion 531 pushes the positioning roller 711 upward to lift the supporting top rod 71, and at this time the driving plate 2 moves upward; when the tilting rod 53 rotates downward, the inner side wall of the plug-in portion 531 pushes the positioning roller 711 downward, thereby driving the supporting top rod 71 to move downward synchronously, and during the movement, the bottom of the supporting top rod 71 always contacts the tilting rod 53.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An ejection mechanism for a heavy truck beam processing mold, characterized in that: The invention comprises a forming block (1) located on a lower die for forming a cross beam, wherein a driving plate (2) and a fixing plate (3) are arranged in sequence at the bottom of the forming block (1) in the vertical direction, a plurality of top support rods (4) are evenly distributed between the top of the driving plate (2) and the bottom of the forming block (1), and the plurality of top support rods (4) are arranged vertically, and a lifting member (5) for driving the driving plate (2) to move vertically is arranged between the driving plate (2) and the fixing plate (3), when the lifting member (5) drives the driving plate (2) to move upward, the driving plate (2) pushes the plurality of top support rods (4) to move upward, and the forming block (1) moves upward synchronously under the push of the plurality of top support rods (4), and at this time, the forming block (1) carries the forming cross beam to separate from other modules on the lower die.

2. The ejection mechanism for a heavy truck beam processing mold according to claim 1, characterized in that: The lifting member (5) is a plurality of nitrogen springs (51) evenly distributed between the driving plate (2) and the fixed plate (3), each of the nitrogen springs (51) is vertically arranged, and the bottom of the cylinder of each nitrogen spring (51) is arranged on the top of the fixed plate (3), and the top of the piston rod of each nitrogen spring (51) is arranged on the bottom of the driving plate (2).

3. The ejection mechanism for a heavy truck beam processing mold according to claim 1, characterized in that: A positioning rod (11) is vertically arranged at the top of the forming block (1) corresponding to the positioning groove of the semi-finished cross beam.

4. The ejection mechanism for a heavy truck beam processing mold according to claim 1, characterized in that: L-shaped guide plates (6) are arranged around the bottom of the forming block (1); the guide plates (6) are fixedly arranged on the lower mold at one side perpendicular to the bottom surface of the forming block (1); a guide hole (61) is vertically opened on one side of the guide plate (6) parallel to the bottom surface of the forming block (1); a guide rod (12) is vertically slidably penetrated in the guide hole (61); the top of the guide rod (12) is fixedly arranged on the bottom of the forming block (1).

5. The ejection mechanism for a heavy truck beam processing mold according to claim 1, characterized in that: A plurality of support rod groups (7) are vertically arranged between the driving plate (2) and the fixed plate (3), each of the support rod groups (7) comprising a support top rod (71) arranged at the bottom of the driving plate (2) and a support sleeve (72) slidably sleeved on the support top rod (71), the bottom of the support sleeve (72) being arranged on the top wall of the fixed plate (3), and a slide groove (721) being vertically arranged on the side walls opposite to the support sleeve (72), The slide groove (721) is connected to the inner cavity of the support sleeve (72); a mounting seat (8) is arranged on the top wall of the fixed plate (3); the lifting member (5) comprises a rotating rod (52) arranged on the mounting seat (8) and rotating in a horizontal direction, and a tilting rod (53) sleeved on the rotating rod (52); the tilting rod (53) passes through the support sleeve (72) through the slide groove (721), and the rod body of the tilting rod (53) is arranged to abut against the bottom of the support top rod (71).

6. The ejection mechanism for a heavy truck beam processing die according to claim 5, characterized in that: A positioning roller (711) is provided at the bottom of the supporting top rod (71) parallel to the axial direction of the rotating rod (52); a U-shaped plug-in portion (531) is provided at one end of the tilting rod (53) away from the rotating rod (52) corresponding to the positioning roller (711); when the tilting rod (53) is supporting the supporting top rod (71), the positioning roller (711) is always located inside the plug-in portion (531), and the positioning roller (711) and the plug-in portion (531) are in sliding cooperation.

7. The ejection mechanism for a heavy truck beam processing die according to claim 5, characterized in that: A motor (81) is vertically arranged on the mounting seat (8), a worm (811) is coaxially arranged on the top of the output shaft of the motor (81) facing upward, and a worm wheel (521) meshing with the worm (811) is sleeved on the rotating rod (52).

8. The ejection mechanism for a heavy truck beam processing die according to claim 5, characterized in that: A plurality of reinforcing ribs (9) are arranged on the tilting rod (53).

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