Stamping die for middle cross beam of automobile top cover

Abstract

The invention relates to a stamping die for a middle cross beam of an automobile top cover. The die comprises an upper die, a lower die, a positioning mechanism and a clamping mechanism, a positioning block of the clamping mechanism can be inserted into an inner hole in one end of a raw material pipe through a plugging section, the positioning block slides in a guide groove through a square shaft, elastic reset force is provided through a reset mechanism, and the positioning mechanism is matched with the clamping mechanism to position the raw material pipe in three degrees of freedom. The positioning block is used for positioning the raw material pipe in the length direction, the height direction and the width direction, the clamping mechanism is matched to lock the raw material pipe, the locking is elastic locking, and when the raw material pipe deforms due to stamping, the clamping mechanism can follow the locking through the elastic adaptability of the clamping mechanism, so that the raw material pipe is not prone to deformation. And after the workpiece is taken down, the positioning mechanism can automatically reset without additional power, the structure is simple and ingenious, and the positioning mechanism is very convenient, rapid and efficient in actual use.

Description

Technical Field

[0001] This invention relates to a stamping die for a crossbeam in an automobile roof. Background Technology

[0002] The crossbeam 1 in the car roof is a key lateral reinforcement component of the car body's roof structure. Located between the front roof crossbeam 3 and the rear roof crossbeam 5, it connects to the side assemblies (including the top edge beam 4) on both sides and is hidden beneath the interior roof panel. It is an important part of the car body's cage-like safety structure. Figure 1 , 2 The image shown is a perspective view of the crossbeam 1 in the car roof and its location. The crossbeam 1 has a slightly arc-shaped rod structure with two symmetrical inner holes 11, open at both ends. Traditional cutting and welding methods are gradually being phased out due to their cumbersome operation, low efficiency, and waste of materials. Stamping has become a new trend in fast and efficient processing, but the issues of ease of operation and high efficiency in stamping urgently need to be addressed. Summary of the Invention

[0003] The purpose of this invention is to provide a stamping die for the crossbeam of an automobile roof, which can achieve rapid and efficient processing of the crossbeam of the roof while ensuring product qualification.

[0004] The technical solution of this invention is as follows: The stamping die for the crossbeam of the automobile roof includes:

[0005] The upper mold includes a top plate and a stamping part located at the bottom of the top plate. The stamping part includes a U-shaped upper stamping cavity. The bottom of the upper stamping cavity is consistent with the shape of the upper side of the crossbeam in the top cover. The width of the upper stamping cavity is consistent with the width of the crossbeam in the top cover.

[0006] The lower mold includes a base plate and a lower support plate that is vertically fixed to the base plate. The upper surface of the lower support plate has the same shape as the lower side of the crossbeam in the top cover.

[0007] The positioning mechanism, located at the upper part of one end of the lower support plate, includes a support frame, a positioning block, and a reset mechanism. The support frame includes support ear plates symmetrically arranged along the width direction of the lower support plate. The lower end of the support ear plates is fixed to the lower support plate. Guide grooves are symmetrically arranged on the support ear plates. The guide grooves include an arc-shaped section and a horizontal section that are tangentially connected. The positioning block includes an insertion section that matches the shape of the two inner holes of the raw material pipe of the crossbeam in the top cover, and a stop protruding outward from the side of the insertion section. The stop is used to limit the end of the raw material pipe. The positioning block is guided and moved in the guide groove by a square shaft. The reset mechanism includes a spring seat and a compression spring. One end of the spring seat is fixed to the lower support plate, and one end of the compression spring is fixed to the spring seat. The other end is engaged with the square shaft to provide elastic force for the square shaft to move from the horizontal section toward the arc-shaped section.

[0008] The locking mechanism is located on the upper part of the other end of the lower support plate. It includes an arc-shaped spring and two limiting bosses. The lower end of the arc-shaped spring is fixed relative to the lower support plate, and the upper end is bent away from the crossbeam in the top cover. The limiting bosses are located on the lower inner side of the arc-shaped spring. The arc-shaped spring provides elastic force to the limiting bosses in the direction of the inner hole of the raw material pipe. The limiting bosses are engaged with the lower edge of the inner hole of the raw material pipe to limit the corresponding end of the raw material pipe.

[0009] The beneficial effects of this technical solution are as follows: When using the stamping die for the crossbeam of the car roof, the raw material tube with two inner holes and in a straight state is first cut to a suitable length. Then, one end of the cut raw material tube is inserted into the insertion section of the positioning mechanism. Due to the reset function of the reset mechanism, before the raw material tube is installed, the positioning block is tilted upward to facilitate the quick insertion of the raw material tube. As the raw material tube is inserted, the positioning block can be pushed to move the square shaft in the guide groove, moving it from the arc section to the horizontal section. At this time, the raw material tube is in place. The other end will also push the arc-shaped spring to deform during the downward movement, so that the limiting boss is locked into the corresponding inner hole of the raw material tube, thereby locking the raw material tube. After the upper die closes and stamps downward, the arc-shaped spring is directly pried outward to disengage the limiting boss from the inner hole of the workpiece. The processed workpiece can then be taken out. At this time, due to the elastic effect of the reset mechanism, the square shaft automatically moves from the horizontal section to the arc section, driving the positioning block to return to its original tilted state, so as to facilitate the insertion of the next raw material tube. Therefore, it can be seen that the mold of this application can achieve rapid positioning and limiting of the raw material tube through simple structural improvements. The positioning block not only achieves positioning in the length direction of the raw material tube, but also simultaneously achieves positioning in the height and width directions. In addition, the locking mechanism achieves locking of the raw material tube. Moreover, the locking is elastic. When the raw material tube is deformed during stamping, the locking mechanism will also follow and lock due to its elastic adaptability. After the workpiece is removed, the positioning mechanism can automatically reset without the need for additional power reset. The structure is simple and ingenious, and it is very convenient, fast and efficient in actual use.

[0010] Based on the above scheme, the following improvements are made: a U-shaped positioning component is connected to the end of the compression spring near the square shaft, and the U-shaped positioning component is locked onto the square shaft.

[0011] Based on the above scheme, the following improvements are made: the U-shaped positioning component is provided with a first guide tube, which is coaxially sleeved with the compression spring.

[0012] Based on the above scheme, the following improvements are made: a second guide tube is provided on the spring seat, and the second guide tube is coaxially sleeved with the compression spring.

[0013] Based on the above scheme, the following improvements are made: the front end of the second guide tube is flared.

[0014] Based on the above scheme, the following improvements are made: the upper and lower sides of the section of the square shaft that extends into the guide groove are respectively fitted with ball bearings, and the square shaft and the guide groove are in rolling contact.

[0015] Based on the above scheme, the following improvements are made: multiple equal-length limiting posts are evenly distributed on the top plate to limit the mold closing stroke of the upper mold relative to the lower mold.

[0016] Based on the above scheme, the following improvements are made: the stamping part includes a front side plate, an upper pressure plate and a rear side plate that are vertically fixed to the top plate and are sequentially attached to each other. The front and rear side plates are symmetrically arranged about the upper pressure plate. The lower surface of the upper pressure plate is higher than the lower surfaces of the front and rear side plates to form the upper stamping cavity. Attached Figure Description

[0017] Figure 1 A three-dimensional diagram of a car frame; Figure 2 for Figure 1 A three-dimensional view of the crossbeam in the top cover of the structure; Figure 3 This is a front view schematic diagram of a specific embodiment of the crossbeam stamping die for an automobile roof according to the present invention; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 for Figure 3 A magnified view of a section at point B in the middle; Figure 6 A transverse sectional view of the positioning mechanism and the locking mechanism; Figure 7 for Figure 6 A magnified view of a section at point C; Figure 8 Figure 6 A magnified view of part D; Figure 9 for Figure 5 A structural diagram showing the structure when the raw material tube is first inserted; Figure 10 This is a three-dimensional view of the mating area between the upper and lower molds; Figure 11 This is a front view of another embodiment of the upper mold; In the diagram: 1-Top cover middle crossbeam, 11-Inner hole, 2-Lower crossbeam, 3-Front top crossbeam, 4-Top side beam, 5-Rear top crossbeam, 6-Upper mold, 61-Top plate, 62-Front side plate, 63-Rear side plate, 64-Upper pressure plate, 65-Limiting post, 7-Lower mold, 71-Base plate, 72-Lower support plate, 8-Positioning mechanism, 81-Support frame, 811-Support ear plate, 8111-Guide groove, 81 12-Guide rail, 82-Positioning block, 821-Insertion section, 822-Stop, 823-Square shaft, 8231-Ball bearing, 824-Connecting rod, 83-Reset mechanism, 831-Spring seat, 8311-Second guide tube, 832-Compression spring, 833-U-shaped positioning frame, 8331-First guide tube, 9-Clocking mechanism, 91-Arc-shaped spring, 92-Limiting boss, 10-Raw material tube. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0021] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0022] Specific embodiments of the crossbeam stamping die for the automobile roof of the present invention are as follows: Figure 3-10 As shown, the stamping die for the crossbeam in the car roof includes an upper die 6, a lower die 7, a positioning mechanism 8, and a locking mechanism 9.

[0023] like Figure 3 , 10 As shown, the upper mold 6 includes a top plate 61 and a stamping part located at the lower part of the top plate 61. The stamping part includes a U-shaped upper stamping cavity. The bottom of the upper stamping cavity has the same shape as the upper side of the crossbeam 1 in the top cover, and the width of the upper stamping cavity is the same as the width of the crossbeam 1 in the top cover. Specifically, the stamping part includes a front side plate 62, an upper pressure plate 64, and a rear side plate 63, which are vertically fixed to the top plate 61 and sequentially attached. The front and rear side plates are symmetrically arranged about the upper pressure plate 64. The lower surface of the upper pressure plate 64 is higher than the lower surfaces of the front and rear side plates to form the upper stamping cavity. The top plate 61, the front side plate 62, the rear side plate 63, and the upper pressure plate 64 are all thick steel plates, and the lower surface of the upper pressure plate 64 undergoes a special hardening treatment.

[0024] like Figure 3 , 6 As shown, the lower mold 7 includes a base plate 71 and a lower support plate 72 vertically fixed on the base plate 71. The upper surface of the lower support plate 72 has the same shape as the lower side of the crossbeam 1 in the top cover.

[0025] like Figure 3 , 5As shown, the positioning mechanism 8 is located on the upper part of one end of the lower support plate 72, and includes a support frame 81, a positioning block 82, and a reset mechanism 83. The support frame 81 includes support ear plates 811 symmetrically arranged along the width direction of the lower support plate 72. The lower end of the support ear plates 811 is fixed to the lower support plate 72. Guide grooves 8111 are symmetrically arranged on the support ear plates 811. The guide grooves 8111 include an arc-shaped section and a horizontal section that are tangentially connected. The positioning block 82 includes an insertion section 821 that matches the shape of the two inner holes 11 of the raw material pipe 10 of the crossbeam 1 in the top cover, and a laterally protruding section 821. A stop 822 is used to limit the end of the raw material pipe 10. A positioning block 82 is guided and moved within a guide groove 8111 via a square shaft 823. The reset mechanism 83 includes a spring seat 831 and a compression spring 832. One end of the spring seat 831 is fixed to the lower support plate 72, and one end of the compression spring 832 is fixed to the spring seat 831. The other end of the compression spring 832 is engaged with the square shaft 823 to provide elastic force for the square shaft 823 to move from the horizontal section to the arc-shaped section. A U-shaped positioning element is connected to the end of the compression spring 832 near the square shaft 823. The U-shaped positioning element is provided with a first guide tube 8331, which is coaxially sleeved with the compression spring 832. A second guide tube 8311 is provided on the spring seat 831, which is coaxially sleeved with the compression spring 832. The front end of the second guide tube 8311 is flared. The upper and lower sides of a section of the square shaft 823 that extends into the guide groove 8111 are respectively fitted with ball bearings 8231, and the square shaft 823 and the guide groove 8111 are in rolling contact.

[0026] like Figure 3 , 4 As shown, the locking mechanism 9 is located on the upper part of the other end of the lower support plate 72, including an arc-shaped spring piece 91 and two limiting bosses 92. The lower end of the arc-shaped spring piece 91 is fixed relative to the lower support plate 72, and the upper end is bent in the direction away from the crossbeam 1 in the top cover. The limiting bosses 92 are located on the lower inner side of the arc-shaped spring piece 91. The arc-shaped spring piece 91 provides elastic force to the limiting bosses 92 in the direction of the inner hole 11 of the raw material pipe 10. The limiting bosses 92 are engaged with the lower edge of the inner hole 11 of the raw material pipe 10 to limit the corresponding end of the raw material pipe 10.

[0027] When using the stamping die for the crossbeam in the car roof, firstly, the raw material tube 10, which has two inner holes 11 and is in a straight state, is cut to a suitable length. Then, one end of the cut raw material tube 10 is inserted into the insertion section 821 of the positioning mechanism 8. Due to the reset function of the reset mechanism 83, before the raw material tube 10 is installed, the positioning block 82 is tilted upwards to facilitate the quick insertion of the raw material tube 10. As the raw material tube 10 is inserted, the positioning block 82 can be pushed to move the square shaft 823 within the guide groove 8111, moving it from the arc section to the horizontal section. At this time, the raw material tube 10 has... When the workpiece is in place, the other end will also push the arc-shaped spring piece 91 to deform during the downward movement, so that the limiting boss 92 can be inserted into the corresponding inner hole 11 of the raw material tube 10, thereby locking the raw material tube 10. Then, after the upper mold 6 closes and presses downward, the arc-shaped spring piece 91 is directly pried open outward, so that the limiting boss 92 is disengaged from the inner hole 11 of the workpiece, and the processed workpiece can be taken out. At this time, due to the elastic action of the reset mechanism 83, the square shaft 823 automatically moves from the horizontal section to the arc section, driving the positioning block 82 to return to the original tilted state, so as to facilitate the insertion of the next raw material tube 10. Therefore, it can be seen that the mold of this application can achieve rapid positioning and limiting of the raw material tube 10 through simple structural improvements. The positioning block 82 not only achieves positioning of the raw material tube 10 in the length direction, but also simultaneously achieves positioning in the height and width directions. In addition, the locking mechanism 9 locks the raw material tube 10. Moreover, the locking is elastic. When the raw material tube 10 is deformed during stamping, the locking mechanism 9 will also follow and lock due to its elastic adaptability. After the workpiece is removed, the positioning mechanism 8 can automatically reset without the need for additional power reset. The structure is simple and ingenious, and it is very convenient, fast and efficient in actual use.

[0028] In other embodiments, such as Figure 11 As shown, multiple equal-length limiting posts 65 are evenly distributed on the top plate 61 to limit the mold closing stroke of the upper mold 6 relative to the lower mold 7.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A stamping die for the crossbeam of an automobile roof, including: The upper mold includes a top plate and a stamping part located at the bottom of the top plate. The stamping part includes a U-shaped upper stamping cavity. The bottom of the upper stamping cavity is consistent with the shape of the upper side of the crossbeam in the top cover. The width of the upper stamping cavity is consistent with the width of the crossbeam in the top cover. The lower mold includes a base plate and a lower support plate that is vertically fixed to the base plate. The upper surface of the lower support plate has the same shape as the lower side of the crossbeam in the top cover. Its characteristic is that it further includes: The positioning mechanism, located at the upper part of one end of the lower support plate, includes a support frame, a positioning block, and a reset mechanism. The support frame includes support ear plates symmetrically arranged along the width direction of the lower support plate. The lower end of the support ear plates is fixed to the lower support plate. Guide grooves are symmetrically arranged on the support ear plates. The guide grooves include an arc-shaped section and a horizontal section that are tangentially connected. The positioning block includes an insertion section that matches the shape of the two inner holes of the raw material pipe of the crossbeam in the top cover, and a stop protruding outward from the side of the insertion section. The stop is used to limit the end of the raw material pipe. The positioning block is guided and moved in the guide groove by a square shaft. The reset mechanism includes a spring seat and a compression spring. One end of the spring seat is fixed to the lower support plate, and one end of the compression spring is fixed to the spring seat. The other end is engaged with the square shaft to provide elastic force for the square shaft to move from the horizontal section toward the arc-shaped section. The locking mechanism is located on the upper part of the other end of the lower support plate. It includes an arc-shaped spring and two limiting bosses. The lower end of the arc-shaped spring is fixed relative to the lower support plate, and the upper end is bent away from the crossbeam in the top cover. The limiting bosses are located on the lower inner side of the arc-shaped spring. The arc-shaped spring provides elastic force to the limiting bosses in the direction of the inner hole of the raw material pipe. The limiting bosses are engaged with the lower edge of the inner hole of the raw material pipe to limit the corresponding end of the raw material pipe.

2. The stamping die for the crossbeam in the automobile roof according to claim 1, characterized in that, The end of the compression spring closest to the square shaft is connected to a U-shaped positioning piece, which is locked onto the square shaft.

3. The stamping die for the crossbeam in the automobile roof according to claim 2, characterized in that, The U-shaped positioning component is provided with a first guide tube, which is coaxially sleeved with the compression spring.

4. The stamping die for the crossbeam in the automobile roof according to claim 3, characterized in that, The spring seat is provided with a second guide tube, which is coaxially sleeved with the compression spring.

5. The stamping die for the crossbeam in the automobile roof according to claim 4, characterized in that, The front end of the second guide tube is flared.

6. The stamping die for the crossbeam in the automobile roof according to claim 1, characterized in that, The upper and lower sides of the section of the square shaft that extends into the guide groove are respectively fitted with ball bearings, and the square shaft and the guide groove are in rolling contact.

7. The stamping die for the crossbeam in the automobile roof according to claim 1, characterized in that, The top plate is evenly distributed with multiple equal-length limiting posts to limit the mold closing stroke of the upper mold relative to the lower mold.

8. The stamping die for the crossbeam in the automobile roof according to claim 1, characterized in that, The stamping part includes a front side plate, an upper pressure plate, and a rear side plate that are vertically fixed to the top plate and sequentially attached to it. The front and rear side plates are symmetrically arranged about the upper pressure plate. The lower surface of the upper pressure plate is higher than the lower surfaces of the front and rear side plates to form the upper stamping cavity.

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