Inner container bulging die

Abstract

The utility model relates to the technical field of bulging dies, in particular to an inner container bulging die which comprises a movable die, a bulging female die, a lower die and a jacking mechanism. The bulging female die is arranged at the bottom of the movable die; the lower die is arranged below the bulging female die; the ejection mechanism is arranged above the lower die; the jacking mechanism comprises a circular ring, a groove, an air cylinder and a jacking block; the movable die is installed on the upper table top of the hydraulic machine, then the stretched inner container is reversely buckled on bulging glue, the upper table top of the hydraulic machine drives the bulging female die to descend and to be assembled with the lower die, and after the die is assembled, the three female die sliding blocks extrude the bulging glue, so that an inner cavity is filled, the straight-wall stretched inner container is formed into the spherical inner container, and after bulging is finished, the inner container is extruded by the three female die sliding blocks to form the spherical inner container. The bulging female die moves upwards, the female die sliding block retreats towards the periphery, the inner container retreats from the inner die, the air cylinder is started to drive the ejecting block to move upwards to eject the inner container, the inner container can be prevented from being attached to the outer wall of bulging glue, inconvenience in taking is avoided, and convenience is provided for workers.

Description

Technical Field

[0001] The utility model relates to the technical field of bulging dies, in particular to an inner liner bulging die. Background Art

[0002] A mold is a tool used to shape objects. This tool is composed of various parts. It mainly realizes the processing of the object's shape by changing the physical state of the molded material. It is usually used in industry to obtain various molds and tools for the required products by injection molding, blow molding, extrusion, die-casting or forging, smelting, stamping, stretching and other methods. There are many types of molds. According to the processing object and processing technology, they can be divided into: molds for processing metals, molds for processing non-metals and powder metallurgy. According to the different materials being molded, molds can be divided into hardware molds, plastic molds, and special molds. According to the structural characteristics, molds can be divided into flat punching molds and cavity molds with space.

[0003] The so-called bulging is a stamping processing method that forces the thickness of the blank to be thinned and the surface area to be increased under the action of the die to obtain the geometric shape of the part. The bulging process is different from the drawing process. The plastic deformation zone of the blank is limited to the deformation zone. The material does not transfer outside the deformation zone, nor does it enter the deformation zone from the outside. It is achieved by local thinning of the blank.

[0004] For example, the Chinese patent announcement number is CN208276007U, and the technical solution disclosed in the patent document is as follows: a bulging die, belonging to the field of forging and pressing technology. The bulging die includes a lower die and a lower die, the lower die includes a lower die body and a lower punch, the lower punch is embedded in the lower die body, and a first slot is set between the upper end and the lower die body, a flow channel is set in the lower punch, the upper end of the flow channel extends out of the upper end of the lower punch, and the lower end can be connected to the high-pressure liquid supply device; the upper die includes an upper die pad, an upper die body, a gas spring and an upper punch, the upper end of the upper punch is connected to the upper die pad, the lower end is embedded in the upper die body, and a second slot is set between the lower end and the upper die body, the upper end of the gas spring is connected to the upper die pad, the lower end is a free end, and is vertically extended downward, during the process of pressing the upper die body downward, the gas spring can be compressed to ensure that the upper die body and the lower die body are not separated, which improves the reliability of forming, and can also be set into a one-die multi-cavity structure to improve the forming efficiency.

[0005] After the bulging of the above-mentioned technical product is completed, the inner wall of the product adheres to the inner wall of the mold during the stamping process, making it difficult to remove and causing inconvenience in unloading. Utility Model Content

[0006] The utility model aims to provide a liner bulging die to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A liner bulging die comprises: a moving die, a bulging die, a lower die and a pushing mechanism; the bulging die is arranged at the bottom of the moving die; the lower die is arranged below the bulging die; the pushing mechanism is arranged above the lower die; the pushing mechanism comprises a circular ring, a groove, a cylinder and a pushing block, the groove is opened at the top of the circular ring, and the pushing block is slidably connected to the inside of the groove, the cylinder is fixedly installed in the inside of the groove, and the pushing block can be moved up to push the liner after stamping and bulging by starting the cylinder to avoid adhesion and difficulty in removal.

[0009] Preferably, the output end of the cylinder is fixedly connected to the bottom of the push block, and the push block is arc-shaped, and the cylinder can be arranged to drive the push block to move up and down.

[0010] Preferably, a supporting block is sleeved on the outer wall of the circular ring, and a concave die limiting block is arranged between the supporting block and the movable die.

[0011] Preferably, a circular plate is provided below the supporting block, and a lower die limiting block is provided between the circular plate and the lower die.

[0012] Preferably, an expansion rubber is arranged inside the circular ring, a support block is arranged at the bottom of the expansion rubber, nitrogen springs are arranged on the concave die limit block and the lower die limit block, the concave die limit block and the lower die limit block are both composed of limit blocks that can slide up and down, and the reciprocating position accuracy of the mold is controlled by relying on the nitrogen spring.

[0013] Preferably, three die sliders are provided on the top of the support block, and the three die sliders are distributed in a circle around the ring. By providing the three die sliders, it can be prevented that the inner liner becomes spherical after expansion and is inverted inside and cannot be taken out. The inner cavity becomes spherical after the mold is closed, and the three die sliders can slide sideways to open, so that the inner liner can be taken out.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Install the movable die on the upper table of the hydraulic press, and then put the stretched liner upside down on the bulging rubber. The upper table of the hydraulic press drives the bulging die down and closes with the lower die. After the mold is closed, the three die sliders squeeze the bulging rubber to fill the inner cavity and form the straight-wall stretched liner into a spherical liner. After the bulging is completed, the bulging die moves upward, the die slider retreats to the surroundings, the liner withdraws from the inner die, and the cylinder is started to drive the push block to move up and push the liner, so as to avoid the liner sticking to the outer wall of the bulging rubber, causing inconvenience in taking, and provide convenience for the staff;

[0016] 2. By setting three die sliders, it can be prevented that the inner liner becomes spherical after bulging, and the inside is inverted and cannot be taken out. The inner cavity is spherical after the mold is closed, and the three die sliders can slide sideways to open, so that the inner liner can be taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the circular ring of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the bulging adhesive of the utility model.

[0021] In the figure: 1. movable die; 2. bulging die; 3. die limit block; 4. die slider; 5. supporting block; 6. bulging rubber; 7. pushing mechanism; 71. ring; 72. groove; 73. cylinder; 74. pushing block; 8. lower die; 9. lower die limit block; 10. supporting block; 11. round plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-4As shown, a liner bulging die comprises a movable die 1, a bulging die 2, a lower die 8 and a push mechanism 7; the bulging die 2 is arranged at the bottom of the movable die 1; the lower die 8 is arranged below the bulging die 2; the push mechanism 7 is arranged above the lower die 8; the push mechanism 7 comprises a ring 71, a groove 72, a cylinder 73 and a push block 74, the groove 72 is opened at the top of the ring 71, and the push block 74 is slidably connected to the inside of the groove 72, the cylinder 73 is fixedly installed in the inside of the groove 72, and the push block 74 can be moved up to push the inner liner after stamping and bulging by starting the cylinder 73 to avoid the difficulty in taking out after fitting, and the output end of the cylinder 73 is connected to the push block 74. 4 is fixedly connected to the bottom, and the push block 74 is arc-shaped. The push block 74 can be driven to move up and down by setting the cylinder 73. The outer wall of the ring 71 is sleeved with a supporting block 5, a concave die limit block 3 is arranged between the supporting block 5 and the movable die 1, a circular plate 11 is arranged below the supporting block 5, a lower die limit block 9 is arranged between the circular plate 11 and the lower die 8, a bulging rubber 6 is arranged inside the ring 71, and a supporting block 10 is arranged at the bottom of the bulging rubber 6. Nitrogen springs are arranged on the concave die limit block 3 and the lower die limit block 9. The groove limit block 3 and the lower die limit block 9 are both composed of limit blocks that can slide up and down, and the reciprocating position accuracy of the mold is controlled by relying on the nitrogen spring.

[0024] Specifically, by installing the movable mold 1 on the upper table of the hydraulic press, and then putting the stretched inner liner upside down on the bulging rubber 6, the upper table of the hydraulic press drives the bulging die 2 to descend and close the mold with the lower mold 8. After the mold is closed, the three die slide blocks 4 squeeze the bulging rubber 6 to fill the inner cavity and form the straight-wall stretched inner liner into a spherical inner liner. After the bulging is completed, the bulging die 2 moves upward, the die slide blocks 4 retreat to the surroundings, the inner liner withdraws from the inner mold, and the cylinder 73 is started to drive the pushing block 74 to move up and push the inner liner, so as to avoid the inner liner sticking to the outer wall of the bulging rubber 6, causing inconvenience in taking, and provide convenience for the staff. The mold eliminates the three cylinders and mechanical valve body of the traditional mold, relies on the mold movement to automatically close the mold, and eliminates the risk of forgetting to close the mechanical valve.

[0025] like Figure 2 As shown, three die slide blocks 4 are arranged on the top of the supporting block 5 , and the three die slide blocks 4 are distributed in a circle around the ring 71 .

[0026] Specifically, by setting three die sliders 4, it can be prevented that the inner liner is spherical after bulging, and the inner liner is inverted and cannot be taken out. After the inner cavity is molded, it is spherical, and the three die sliders 4 can slide sideways to open, so that the inner liner can be taken out.

[0027] Furthermore, the above electronic control technologies are all existing technologies and are not the main innovations of this application, and will not be described in detail here.

[0028] The working principle of the utility model is as follows: by installing the movable mold 1 on the upper table of the hydraulic press, and then the stretched inner liner is inverted on the bulging rubber 6, the upper table of the hydraulic press drives the bulging die 2 to descend and close the mold with the lower mold 8. After the mold is closed, the three die sliders 4 squeeze the bulging rubber 6 to fill the inner cavity and form the straight-wall stretched inner liner into a spherical inner liner. After the bulging is completed, the bulging die 2 moves upward, the die slider 4 retreats to the surroundings, the inner liner withdraws from the inner mold, and the cylinder 73 is started to drive the push block 74 to move up and push the inner liner, so that the inner liner can be prevented from fitting the outer wall of the bulging rubber 6, causing inconvenience in taking, and providing convenience for the staff. By setting three die sliders 4, it can be prevented that the inner liner is spherical after bulging and is inverted inside and cannot be taken out. The inner cavity is spherical after closing the mold, and the three die sliders 4 can slide open sideways to take out the inner liner.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A liner bulging die, characterized in that: include: A movable die (1), a bulging die (2), a lower die (8) and a push mechanism (7); The bulging die (2) is arranged at the bottom of the movable die (1); The lower die (8) is arranged below the bulging die (2); The ejection mechanism (7) is arranged above the lower mold (8); The push mechanism (7) comprises a circular ring (71), a groove (72), a cylinder (73) and a push block (74); the groove (72) is formed at the top of the circular ring (71), the push block (74) is slidably connected to the inside of the groove (72), and the cylinder (73) is fixedly mounted inside the groove (72).

2. The inner liner bulging die according to claim 1, characterized in that: The output end of the cylinder (73) is fixedly connected to the bottom of the push block (74), and the push block (74) is arc-shaped.

3. The inner liner bulging die according to claim 1, characterized in that: The outer wall of the circular ring (71) is sleeved with a supporting block (5), and a female die limiting block (3) is arranged between the supporting block (5) and the movable die (1).

4. The inner liner bulging die according to claim 3, characterized in that: A circular plate (11) is provided below the supporting block (5), and a lower die limiting block (9) is provided between the circular plate (11) and the lower die (8).

5. The inner liner bulging die according to claim 4, characterized in that: A bulging rubber (6) is arranged inside the circular ring (71), a supporting block (10) is arranged at the bottom of the bulging rubber (6), and nitrogen springs are arranged on both the concave die limit block (3) and the lower die limit block (9).

6. The inner liner bulging die according to claim 4, characterized in that: Three die slide blocks (4) are arranged on the top of the support block (5), and the three die slide blocks (4) are distributed in a circle around the ring (71).

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