One-step forming die for convex hull on side wall of circular cylinder

Abstract

The invention relates to the technical field of forming dies, and discloses a round cylinder side wall convex hull one-time forming die which comprises an upper die plate and a lower die plate, a plurality of inner forming blocks distributed circumferentially and outer forming blocks distributed around the inner forming blocks are arranged on the lower die plate, and the inner forming blocks and the outer forming blocks are arranged in a one-to-one opposite mode and can move in the radial direction. A round cylinder workpiece to be formed is placed between the inner forming blocks and the outer forming blocks, inner driving blocks and outer driving blocks are arranged on the upper die plate, and the inner driving blocks are used for driving the inner forming blocks to expand outwards at the same time in the die assembly process of the upper die plate and the lower die plate. The outer driving block is used for driving all the outer forming blocks to gather towards the center at the same time in the die assembly process of the upper die plate and the lower die plate, so that forming of all convex hulls is completed on a round cylinder workpiece in the one-time die assembly process. According to the one-time forming die for the convex hulls on the side wall of the circular barrel, all the convex hulls can be formed at a time, the consistency is guaranteed, meanwhile, the production takt is improved, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of forming dies, in particular to a one-step forming die for a convex hull on a circular cylinder side wall. Background Art

[0002] against Figure 1 The circular cylindrical workpiece 100 has a plurality of convex hulls 200 on its side wall, and each convex hull 200 is evenly distributed on the same circumference. Taking six convex hulls 200 as an example, the conventional forming mold under this working condition, such as Figure 2 As shown, the inner surface of the cylinder is supported by the forming die 1', the outer surface of the cylinder is pressed by the pressing plate 2', and the forming punch 3' reciprocates and cooperates with the forming die 1' to realize the formation of the convex hump 200.

[0003] It can be seen that this mold can only form one convex hull 200 at a time, and after forming once, the workpiece needs to be rotated a certain angle and then formed again. Six convex hulls 200 need to be formed in six steps, resulting in too many steps, too long production time, and extremely inconvenient operation. In addition, the angle consistency of the convex hulls 200 formed in batches is poor, which affects the performance of the entire product. Summary of the Invention

[0004] The purpose of the present invention is to provide a one-time forming die for the convex bulges on the side wall of a circular cylinder, so as to realize one-time forming of multiple convex bulges and improve the forming quality and efficiency.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A one-time forming mold for a bulge on the side wall of a circular cylinder comprises an upper template and a lower template. The lower template is provided with a plurality of circumferentially distributed inner forming blocks and outer forming blocks distributed around the inner forming blocks. The inner forming blocks and the outer forming blocks are arranged one by one relative to each other and can both move radially. The circular cylindrical workpiece to be formed is placed between the inner forming blocks and the outer forming blocks. The upper template is provided with an inner driving block and an outer driving block. The inner driving block is used to drive each inner forming block to expand outward at the same time during the mold closing process of the upper template and the lower template. The outer driving block is used to drive each outer forming block to gather toward the center at the same time during the mold closing process of the upper template and the lower template, so that the forming of all bulges on the circular cylindrical workpiece is completed during one mold closing process.

[0007] As an optional solution, the inner driving block is located at the center of each inner forming block, and the inner driving block is matched with each inner forming block in an inclined surface.

[0008] As an optional solution, an external driving block is provided on the outer side of each external forming block, and the external driving block and the external forming block are matched with each other in an inclined plane.

[0009] As an optional solution, a first guide seat is provided on the lower template, and the bottom surface of each inner forming block can slide along the first guide seat. A first guide rod passing through the side wall of the first guide seat is provided on the outer surface of each inner forming block, and a first spring is sleeved on the first guide rod. The first spring gives a reset force to each inner forming block to move toward the center.

[0010] As an optional solution, the top hoops of all the inner forming blocks are provided with tightening rings, which give the inner forming blocks a restoring force to move toward the center.

[0011] As an optional solution, the bottom surface of the inner forming block is provided with a guide block, and the first guide seat is provided with a limiting groove that cooperates with each guide block for guidance.

[0012] As an optional solution, a second guide seat is provided on the first guide seat, and the bottom surface of each external forming block can slide along the second guide seat. A fixed block is provided on the second guide seat and located on the outside of the external forming block. A second guide rod passing through the fixed block is provided on the outer surface of the second guide seat, and a second spring is sleeved on the second guide rod. The second spring provides a reset force for each external forming block to move outward.

[0013] As an optional solution, a flange is provided at the bottom of the inner forming block, and the upper surface of the first guide seat and the lower surface of the second guide seat cooperate to limit the flange.

[0014] As an optional solution, one of the upper template and the lower template is provided with a guide column, and the other of the upper template and the lower template is provided with a guide sleeve that cooperates with the guide column.

[0015] As an optional solution, limiting columns are respectively provided on the upper template and the lower template, and the limiting columns of the upper template abut against the limiting columns of the lower template when the mold is closed.

[0016] Beneficial effects of the present invention:

[0017] In response to the molding requirements of multiple bulges, the one-time molding mold for the bulge on the side wall of a circular cylinder is designed with inner and outer molding blocks that can move radially with the mold closing action. Under the action of the corresponding inner and outer driving blocks, all bulges can be molded at the same time, which not only ensures consistency, but also improves production rhythm and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the shape of a circular cylindrical workpiece;

[0019] Figure 2 It is a structural diagram of an existing forming mold;

[0020] Figure 3 2. It is a structural schematic diagram of a one-step forming die for a convex bulge on the side wall of a circular cylinder provided by an embodiment of the present invention;

[0021] Figure 4 It is a schematic diagram of the actions of the inner forming block and the outer forming block in the one-time forming die for the convex bulge on the side wall of a circular cylinder provided by an embodiment of the present invention.

[0022] In the attached figure:

[0023] 100, circular cylindrical workpiece; 200, convex hull;

[0024] 1', forming die; 2', pressing plate; 3', forming punch;

[0025] 1. Upper template; 2. Lower template; 3. Inner forming block; 4. Outer forming block; 5. Inner drive block; 6. Outer drive block; 7. First guide seat; 8. First guide rod; 9. First spring; 10. Tightening ring; 11. Guide block; 12. Limiting groove; 13. Second guide seat; 14. Fixed block; 15. Second guide rod; 16. Second spring; 17. Flange; 18. Guide column; 19. Guide sleeve; 20. Limiting column. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0027] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0030] In addition, the terms "first", "second", etc. are only used to distinguish in description and have no special meaning.

[0031] See also Figure 3 and Figure 4 As shown, this embodiment provides a one-time forming mold for the bulge on the side wall of a circular cylinder, including an upper template 1 and a lower template 2. The lower template 2 is provided with a plurality of circumferentially distributed inner forming blocks 3 and outer forming blocks 4 distributed around the inner forming blocks 3. The inner forming blocks 3 and the outer forming blocks 4 are arranged one by one relative to each other and can both move radially. The circular cylindrical workpiece 100 to be formed is placed between the inner forming blocks 3 and the outer forming blocks 4. The upper template 1 is provided with an inner driving block 5 and an outer driving block 6. The inner driving block 5 is used to drive each inner forming block 3 to expand outward at the same time during the mold closing process of the upper template 1 and the lower template 2. The outer driving block 6 is used to drive each outer forming block 4 to gather toward the center at the same time during the mold closing process of the upper template 1 and the lower template 2, so that the forming of all bulges 200 on the circular cylindrical workpiece 100 is completed during one mold closing process.

[0032] Therefore, in response to the molding requirements of multiple bulges 200, inner molding blocks 3 and outer molding blocks 4 are designed that can move radially with the mold closing action, so that under the action of the corresponding inner driving blocks 5 and outer driving blocks 6, all bulges 200 can be molded at the same time, which not only ensures consistency, but also improves the production rhythm and reduces production costs.

[0033] In at least one embodiment, the inner driving block 5 is located at the center of each inner forming block 3 , and the inner driving block 5 and each inner forming block 3 are matched with each other in an inclined plane.

[0034] Taking the molding of six convex bumps 200 as an example, six inner molding blocks 3 are provided, each inner molding block 3 is fan-shaped and the inner side surface is an inclined surface, and the inner driving block 5 is in the shape of a hexagonal pyramid or a hexagonal pyramid; as the upper template 1 and the lower template 2 are molded together, the inner driving block 5 is gradually inserted into the six inner molding blocks 3, and each inner driving block 5 is pushed away from the center under the action of the inclined surface.

[0035] In at least one embodiment, an outer driving block 6 is provided on the outer side of each outer forming block 4 , and the outer driving block 6 is matched with the outer forming block 4 in an inclined plane.

[0036] On the basis of forming the six convex humps 200, the six outer forming blocks 4 are correspondingly located on the radial straight line where the six inner forming blocks 3 are located. The outer side surface of each outer forming block 4 is a slope, and the inner side surface of the outer driving block 6 is also a slope; as the upper template 1 and the lower template 2 are closed, each outer driving block 6 abuts against the corresponding outer forming block 4, and under the action of the slope cooperation, each outer driving block 6 is pushed toward the center.

[0037] In order to ensure that the inner forming blocks 3 can accurately repeat the movements, a first guide seat 7 is provided on the lower template 2, and the bottom surface of each inner forming block 3 can slide along the first guide seat 7. A first guide rod 8 passing through the side wall of the first guide seat 7 is provided on the outer surface of each inner forming block 3. A first spring 9 is sleeved on the first guide rod 8, and the first spring 9 gives each inner forming block 3 a reset force to move toward the center.

[0038] Thus, in the mold-opening state, the first spring 9 drives the corresponding inner forming blocks 3 to gather toward the center, making it convenient to place or remove the circular cylindrical workpiece 100; in the mold-closing state, the inner driving blocks 5 overcome the elastic force of each first spring 9 to open the corresponding inner forming blocks 3 outward, so as to cooperate with the outer forming blocks 4 to form a convex bulge 200 on the surface of the circular cylindrical workpiece 100. The movement direction of the inner forming blocks 3 is detailed in Figure 4 .

[0039] In some embodiments, the first spring 9 acts on the bottom of the inner forming block 3. In order to ensure that the top and bottom of the inner forming block 3 are subjected to uniform reset force, the top hoop of all the inner forming blocks 3 is provided with a tightening ring 10. The tightening ring 10 gives each inner forming block 3 a reset force to move toward the center.

[0040] Thus, the tightening ring 10 cooperates with the first spring 9 to provide a restoring force for the inner forming block 3 , so that the movement of the inner forming block 3 is more stable.

[0041] In some embodiments, a guide block 11 is provided on the bottom surface of the inner forming block 3 , and a limiting groove 12 for cooperating with each guide block 11 for guidance is provided on the first guide seat 7 .

[0042] Therefore, the inner forming block 3 can only move along the set track through the cooperation between the guide block 11 and the limiting groove 12, thereby avoiding mold abnormality.

[0043] In order to ensure that the outer forming block 4 can accurately repeat the movement, a second guide seat 13 is provided on the first guide seat 7, and the bottom surface of each outer forming block 4 can slide along the second guide seat 13. A fixed block 14 is provided on the second guide seat 13 and located on the outside of the outer forming block 4. A second guide rod 15 passing through the fixed block 14 is provided on the outer surface of the second guide seat 13. A second spring 16 is sleeved on the second guide rod 15. The second spring 16 gives a reset force to each outer forming block 4 to move outward.

[0044] Thus, in the mold-opening state, the second spring 16 drives the corresponding outer forming block 4 to open outward, making it convenient to place or remove the circular cylindrical workpiece 100; in the mold-closing state, the outer driving block 6 overcomes the elastic force of each second spring 16 to press the corresponding outer forming block 4 inward, so as to cooperate with the inner forming block 3 to form a convex bulge 200 on the surface of the circular cylindrical workpiece 100. The movement direction of the outer forming block 4 is detailed in Figure 4 .

[0045] In some embodiments, a flange 17 is provided at the bottom of the inner forming block 3 , and the upper surface of the first guide seat 7 and the lower surface of the second guide seat 13 cooperate to limit the flange 17 .

[0046] Thus, the flange 17 is clamped by the first guide seat 7 and the second guide seat 13 to ensure that the inner forming block 3 can only move in the radial direction, further improving the displacement accuracy.

[0047] Optionally, a guide column 18 is provided on one of the upper template 1 and the lower template 2 , and a guide sleeve 19 cooperating with the guide column 18 is provided on the other of the upper template 1 and the lower template 2 .

[0048] Therefore, through the precise cooperation between the guide pin 18 and the guide sleeve 19, the movement accuracy of the upper template 1 relative to the lower template 2 is ensured, and the stability during the mold opening and closing process and the consistency of product quality are guaranteed.

[0049] Optionally, limiting posts 20 are respectively provided on the upper template 1 and the lower template 2 , and the limiting posts 20 of the upper template 1 abut against the limiting posts 20 of the lower template 2 when the mold is closed.

[0050] Therefore, the mold clamping gap is controlled by the precise positioning of the upper and lower limiting columns 20 to avoid over-closing.

[0051] Specific working principle:

[0052] In the initial state, the inner driving block 5 is completely separated from the inner forming block 3, and the inner forming block 3 is in a state of tightening toward the center under the action of the tightening ring 10 and the first spring 9; the outer driving block 6 is completely separated from the outer forming block 4, and the outer forming block 4 is in a state of opening outward under the action of the second spring 16; at this time, the circular cylindrical workpiece 100 to be formed is placed between the inner forming block 3 and the outer forming block 4.

[0053] As the upper template 1 moves downward, the inner driving block 5 is inserted into each inner forming block 3, causing each inner forming block 3 to move radially outward until the inner forming block 3 contacts the side wall of the circular cylindrical workpiece 100; at the same time, the outer driving block 6 squeezes the outer forming block 4, causing each outer forming block 4 to move radially toward the center, and under the action of the thrust, cooperates with the inner forming block 3, so that each bulge 200 begins to form at the same time.

[0054] When the movement of the upper and lower molds ends, the limiting pillars 20 of the upper mold plate 1 and the limiting pillars 20 of the lower mold plate 2 abut against each other, the mold is fixed, and the molding is completed.

[0055] As the upper template 1 is lifted, the inner driving block 5 is separated from the inner forming block 3, and the outer driving block 6 is separated from the outer forming block 4. The inner forming block 3 is tightened toward the center under the action of the tightening ring 10 and the first spring 9, and the outer forming block 4 is opened outward under the action of the second spring 16. At this time, the circular cylindrical workpiece 100 after forming all the bulges 200 can be taken out.

[0056] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A one-step forming die for a convex shape on the side wall of a circular cylinder, comprising an upper die plate (1) and a lower die plate (2), characterized in that: The lower template (2) is provided with a plurality of inner forming blocks (3) distributed in a circumferential manner and outer forming blocks (4) distributed around the inner forming blocks (3). The inner forming blocks (3) and the outer forming blocks (4) are arranged one by one relative to each other and can both move radially. The circular cylindrical workpiece (100) to be formed is placed between the inner forming blocks (3) and the outer forming blocks (4). The upper template (1) is provided with an inner driving block (5) and an outer driving block (6). The inner driving block (5) is used to drive each of the inner forming blocks (3) to expand outwards at the same time during the mold closing process of the upper template (1) and the lower template (2). The outer driving block (6) is used to drive each of the outer forming blocks (4) to gather toward the center at the same time during the mold closing process of the upper template (1) and the lower template (2), so that all the convex hulls (200) are formed on the circular cylindrical workpiece (100) in one mold closing process.

2. The circular cylinder side wall convex hull one-step forming die according to claim 1, characterized in that: The inner driving block (5) is located at the center of each inner forming block (3), and the inner driving block (5) is matched with each inner forming block (3) in an inclined plane.

3. The one-step forming die for the convex hull of the circular cylindrical side wall according to claim 1, characterized in that: An outer side of each outer forming block (4) is provided with an outer driving block (6), and the outer driving block (6) and the outer forming block (4) are matched with each other in an inclined plane.

4. The one-step forming die for the convex hull of the circular cylindrical side wall according to claim 1, characterized in that: A first guide seat (7) is provided on the lower template (2), and the bottom surface of each inner forming block (3) can slide along the first guide seat (7). A first guide rod (8) passing through the side wall of the first guide seat (7) is provided on the outer surface of each inner forming block (3). A first spring (9) is sleeved on the first guide rod (8), and the first spring (9) provides a reset force for each inner forming block (3) to move toward the center.

5. The one-step forming die for the convex bulge on the side wall of a circular cylinder according to claim 4, characterized in that: The top hoops of all the inner forming blocks (3) are provided with tightening rings (10), and the tightening rings (10) give each inner forming block (3) a restoring force to move toward the center.

6. The one-step forming die for the convex hull of the circular cylindrical side wall according to claim 4, characterized in that: The bottom surface of the inner forming block (3) is provided with a guide block (11), and the first guide seat (7) is provided with a limiting groove (12) for guiding in cooperation with each of the guide blocks (11).

7. The one-step forming die for the convex bulge on the side wall of a circular cylinder according to claim 4, characterized in that: A second guide seat (13) is provided on the first guide seat (7), and the bottom surface of each of the outer forming blocks (4) can slide along the second guide seat (13). A fixed block (14) is provided on the second guide seat (13) and located outside the outer forming block (4). A second guide rod (15) passing through the fixed block (14) is provided on the outer surface of the second guide seat (13). A second spring (16) is sleeved on the second guide rod (15), and the second spring (16) provides a reset force for each of the outer forming blocks (4) to move outward.

8. The one-step forming die for the convex bulge on the side wall of a circular cylinder according to claim 7, characterized in that: The bottom of the inner forming block (3) is provided with a flange (17), and the upper surface of the first guide seat (7) and the lower surface of the second guide seat (13) cooperate to limit the flange (17).

9. The one-step forming die for the convex hull of the circular cylindrical side wall according to claim 1, characterized in that: A guide column (18) is provided on one of the upper template (1) and the lower template (2), and a guide sleeve (19) matched with the guide column (18) is provided on the other of the upper template (1) and the lower template (2).

10. The one-step forming die for the convex bulge on the side wall of a circular cylinder according to claim 1, characterized in that: Limiting columns (20) are respectively provided on the upper template (1) and the lower template (2); when the mold is closed, the limiting columns (20) of the upper template (1) and the limiting columns (20) of the lower template (2) are in contact with each other.

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