Press rod mechanism for small parts hydroforming

Abstract

The utility model discloses a pressure rod mechanism for hydraulic forming of small parts, which belongs to the technical field of hydraulic forming accessories, and comprises a support frame, a lower mold, a hydraulic cylinder, an adjustment mechanism and an upper mold, wherein the support frame comprises two groups of support plates and a plurality of support optical axes, the two ends of the plurality of support optical axes are respectively connected to the two groups of support plates, and the plurality of support optical axes are arranged in a rectangular array, the adjustment mechanism slides on the plurality of support optical axes, the lower mold is mounted on a group of support plates, and the hydraulic cylinder is mounted on another group of support plates; the utility model drives the hydraulic rod to move by the hydraulic cylinder, the hydraulic rod is connected to and drives the adjustment mechanism to move, and the adjustment mechanism adjusts the initial position between the upper mold and the lower mold by internal movement, so that the adjustment mechanism drives the upper mold installed on the adjustment mechanism to be clamped into the lower mold, thereby solving the problem that the upper mold cannot be clamped into the lower mold due to insufficient stroke of the hydraulic rod.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic forming accessories, in particular to a pressure rod mechanism for hydraulic forming of small parts. Background Art

[0002] Hydroforming refers to a method of stamping sheet metal by using liquid pressure instead of rigid punches or dies. It can perform many stamping processes, such as bending, drawing, bulging of flat blanks, bulging of space blanks, etc. It can form various complex parts, such as bellows. It has the advantages of good surface quality of parts, reduced processes, simplified molds, and no need for special stamping equipment.

[0003] Existing hydraulic forming equipment basically has a fixed stroke. However, when the production mold of a product is too small, the movement stroke of the hydraulic forming equipment cannot make the upper mold and the lower mold engage with each other, making it impossible for the equipment to process the product. Utility Model Content

[0004] The utility model aims to solve the problem of insufficient stroke in hydraulic forming equipment and to provide a pressure rod mechanism for small-piece hydraulic forming.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pressure rod mechanism for hydraulic forming of small parts, including a support frame, a lower mold, a hydraulic cylinder, an adjustment mechanism and an upper mold, the support frame includes two groups of support plates and multiple support optical axes, the two ends of the multiple support optical axes are respectively connected to the two groups of support plates, and the multiple support optical axes are arranged in a rectangular array, the adjustment mechanism slides on the multiple support optical axes, the lower mold is installed on one group of support plates, the hydraulic cylinder is installed on another group of support plates, and the hydraulic cylinder is connected to and drives the adjustment mechanism through a hydraulic rod, the upper mold is installed on the adjustment mechanism, and the upper mold is stuck in the lower mold.

[0006] As a further description of the above technical solution:

[0007] The lower mold is provided with a plurality of positioning holes, and the upper mold is provided with a plurality of positioning shafts. The plurality of positioning holes correspond to the plurality of positioning shafts one by one, and the plurality of positioning shafts are docked in the plurality of positioning holes.

[0008] As a further description of the above technical solution:

[0009] The plurality of positioning holes and the plurality of positioning shafts are all conical structures.

[0010] As a further description of the above technical solution:

[0011] The adjusting mechanism includes a connecting plate, a sliding plate, two connecting shafts and a screw body. The connecting plate is installed on the hydraulic rod. The sliding plate is slidably connected to multiple supporting optical shafts through multiple linear flanges. The two connecting shafts and the screw body are located between the connecting plate and the sliding plate. The screw body is screwed to the two connecting shafts. The opposite ends of the two connecting shafts are hinged with a first connecting rod and a second connecting rod. Four of the first connecting rods are hinged to the connecting plate, and four of the second connecting rods are hinged to the sliding plate.

[0012] As a further description of the above technical solution:

[0013] Two groups of side plates are symmetrically arranged on the connecting plate, the four first connecting rods are symmetrically arranged in pairs and hinged to the two groups of side plates, four connecting rod seats are provided on the sliding plate, and the four second connecting rods are symmetrically arranged in pairs and hinged to the four connecting rod seats respectively.

[0014] As a further description of the above technical solution:

[0015] The screw body is a T-type screw, and the screw body is a bidirectional screw.

[0016] As a further description of the above technical solution:

[0017] A rotating wheel is provided at one end of the screw body.

[0018] As a further description of the above technical solution:

[0019] The connecting shaft is provided with a threaded hole, and the screw body is threadedly connected in the threaded hole.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0021] 1. In the utility model, the hydraulic cylinder drives the hydraulic rod to move, the hydraulic rod is connected to and drives the adjusting mechanism to move, and the adjusting mechanism adjusts the initial position between the upper mold and the lower mold through internal movement, so that the adjusting mechanism drives the upper mold installed on the adjusting mechanism to be inserted into the lower mold, thereby solving the problem that the upper mold cannot be inserted into the lower mold due to insufficient stroke of the hydraulic rod.

[0022] 2. In the utility model, the screw body is driven to rotate by rotating the rotating wheel, and the rotation of the screw body drives the two groups of connecting shafts threaded therewith to move relative to each other, thereby driving the first connecting rod and the second connecting rod respectively hinged on the opposite ends of the two groups of connecting shafts to move, and then driving the connecting plate and the sliding plate respectively hinged to the first connecting rod and the second connecting rod to slide relative to each other, thereby increasing the distance between the connecting plate and the sliding plate and reducing the stroke between the upper mold and the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the pressure rod mechanism for hydraulic forming of small parts.

[0024] Figure 2 This is a schematic diagram of the usage status of the pressure rod mechanism for hydraulic forming of small parts.

[0025] Figure 3 for Figure 2 Cross-sectional view of .

[0026] Figure 4 for Figure 2 Right view of .

[0027] Legend:

[0028] 1. Support frame; 2. Lower mold; 3. Hydraulic cylinder; 4. Adjustment mechanism; 5. Upper mold; 6. Support plate; 7. Support optical axis; 8. Hydraulic rod; 9. Positioning hole; 10. Positioning shaft; 11. Connecting plate; 12. Sliding plate; 13. Connecting shaft; 14. Screw body; 15. Linear flange; 16. First connecting rod; 17. Second connecting rod; 18. Side plate; 19. Connecting rod seat; 20. Rotating wheel; 21. Threaded hole. DETAILED DESCRIPTION

[0029] 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 of 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.

[0030] See also Figure 1-4The utility model provides a technical solution: a pressure rod mechanism for hydraulic forming of small parts, comprising a support frame 1, a lower mold 2, a hydraulic cylinder 3, an adjustment mechanism 4 and an upper mold 5, wherein the support frame 1 comprises two groups of support plates 6 and a plurality of support optical axes 7, the two ends of the plurality of support optical axes 7 are respectively connected to the two groups of support plates 6, and the plurality of support optical axes 7 are arranged in a rectangular array, the adjustment mechanism 4 slides on the plurality of support optical axes 7, the lower mold 2 is mounted on a group of support plates 6, the hydraulic cylinder 3 is mounted on another group of support plates 6, and The hydraulic cylinder 3 is connected to and drives the adjusting mechanism 4 through the hydraulic rod 8. The upper mold 5 is installed on the adjusting mechanism 4, and the upper mold 5 is inserted into the lower mold 2. The hydraulic rod 8 is driven to move by the hydraulic cylinder 3. The hydraulic rod 8 is connected to and drives the adjusting mechanism 4 to move. The adjusting mechanism 4 adjusts the initial position between the upper mold 5 and the lower mold 2 through internal movement, so that the movement of the adjusting mechanism 4 drives the upper mold 5 installed on the adjusting mechanism 4 to be inserted into the lower mold 2, thereby solving the problem that the upper mold 5 cannot be inserted into the lower mold 2 due to the stroke of the hydraulic rod 8.

[0031] The lower mold 2 is provided with a plurality of positioning holes 9, and the upper mold 5 is provided with a plurality of positioning shafts 10. The plurality of positioning holes 9 correspond to the plurality of positioning shafts 10 one by one, and the plurality of positioning shafts 10 are docked in the plurality of positioning holes 9. The positioning holes 9 and the positioning shafts 10 cooperate with each other, so as to facilitate the rapid positioning between the upper mold 5 and the lower mold 2.

[0032] The plurality of positioning holes 9 and the plurality of positioning shafts 10 are all tapered structures, so that the upper mold 5 can be quickly inserted into the lower mold 2;

[0033] The adjusting mechanism 4 comprises a connecting plate 11, a sliding plate 12, two connecting shafts 13 and a screw body 14, wherein the connecting plate 11 is mounted on the hydraulic rod 8, the sliding plate 12 is slidably connected to a plurality of supporting optical axes 7 through a plurality of linear flanges 15, the two connecting shafts 13 and the screw body 14 are located between the connecting plate 11 and the sliding plate 12, the screw body 14 is screwed to the two connecting shafts 13, the two opposite ends of the two connecting shafts 13 are hinged with a first connecting rod 16 and a second connecting rod 17, four of the first connecting rods 16 are hinged to the connecting plate 11, and four of the second connecting rods 17 are hinged to the sliding plate 12, and the first connecting rod 16 and the second connecting rod 17 respectively hinged to the opposite ends of the two groups of connecting shafts 13 are driven to move relative to each other through the screw connection of the two groups of connecting shafts 13, thereby driving the sliding plate 12 to slide along the supporting optical axis 7 under the action of the plurality of linear flanges 15;

[0034] The connecting plate 11 is symmetrically provided with two groups of side plates 18, the four first connecting rods 16 are symmetrically arranged in pairs and hinged to the two groups of side plates 18, the sliding plate 12 is provided with four connecting rod seats 19, the four second connecting rods 17 are symmetrically arranged in pairs and hinged to the four connecting rod seats 19 respectively, and the sliding plate 12 and the connecting plate 11 slide relative to each other through the hinge action between the first connecting rod 16 and the side plates 18, the hinge action between the first connecting rod 16 and the second connecting rod 17, and the hinge action between the second connecting rod 17 and the connecting rod seat 19;

[0035] The screw body 14 is a T-shaped screw, and the screw body 14 is a bidirectional screw. The structure of the T-shaped screw is more stable and provides higher strength for the screw body 14. The structure of the bidirectional screw facilitates the screw connection between the two sets of connecting shafts 13 and the screw body 14.

[0036] A rotating wheel 20 is provided at one end of the screw body 14 to facilitate manual adjustment of the positional relationship between the two sets of connecting shafts 13 and the screw body 14;

[0037] The connection shaft 13 is provided with a threaded hole 21 , and the screw body 14 is threadedly connected in the threaded hole 21 , which facilitates the threaded connection between the two sets of connection shafts 13 and the screw body 14 .

[0038] Working principle: First, the upper mold 5 is installed on the sliding plate 12, and the lower mold 2 is installed on the supporting plate 6. Secondly, the hydraulic cylinder 3 is connected through the hydraulic rod 8 and drives the adjustment structure to move, so that the upper mold 5 is inserted into the lower mold 2. A plurality of positioning shafts 10 are provided on the upper mold 5, and a plurality of positioning holes 9 are provided on the lower mold 2. The plurality of positioning shafts 10 correspond to the plurality of positioning holes 9 one by one, which is convenient for the rapid positioning between the upper mold 5 and the lower mold 2. The plurality of positioning shafts 10 and the plurality of positioning holes 9 are conical structures, which is convenient for the upper mold 5 to be quickly inserted into the lower mold 2. Furthermore, when the stroke of the hydraulic rod 8 is not enough, the screw body 14 is driven to rotate by rotating the rotating wheel 20, and the screw body 14 rotates The two groups of connecting shafts 13 screwed thereto are driven to move relative to each other, thereby driving the first connecting rod 16 and the second connecting rod 17 respectively hinged on the opposite ends of the two groups of connecting shafts 13 to move, and then driving the connecting plate 11 and the sliding plate 12 respectively hinged to the first connecting rod 16 and the second connecting rod 17 to slide relative to each other. Under the action of multiple straight flanges 15, the sliding plate 12 slides on the supporting optical axis 7 to drive the upper mold 5 to move, solving the problem that the upper mold 5 and the lower mold 2 cannot be inserted due to insufficient stroke of the hydraulic rod 8. Two groups of side plates 18 are provided on the connecting plate 11, and the first connecting rod 16 and the second connecting rod 17 are installed on the two groups of side plates 18, so that the force of the adjustment structure is more uniform.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressure rod mechanism for small parts hydraulic forming, characterized in that: The invention comprises a support frame (1), a lower mold (2), a hydraulic cylinder (3), an adjustment mechanism (4) and an upper mold (5); the support frame (1) comprises two groups of support plates (6) and a plurality of support optical axes (7); the two ends of the plurality of support optical axes (7) are respectively connected to the two groups of support plates (6), and the plurality of support optical axes (7) are arranged in a rectangular array; the adjustment mechanism (4) slides on the plurality of support optical axes (7); the lower mold (2) is mounted on one group of support plates (6); the hydraulic cylinder (3) is mounted on another group of support plates (6), and the hydraulic cylinder (3) is connected to and drives the adjustment mechanism (4) through a hydraulic rod (8); the upper mold (5) is mounted on the adjustment mechanism (4), and the upper mold (5) is inserted into the lower mold (2).

2. The small-part hydraulic forming press rod mechanism according to claim 1, characterized in that: The lower mold (2) is provided with a plurality of positioning holes (9), and the upper mold (5) is provided with a plurality of positioning shafts (10). The plurality of positioning holes (9) correspond to the plurality of positioning shafts (10) one by one, and the plurality of positioning shafts (10) are docked in the plurality of positioning holes (9).

3. The pressure rod mechanism for small-part hydraulic forming according to claim 2, characterized in that: The plurality of positioning holes (9) and the plurality of positioning shafts (10) are all conical structures.

4. The pressure rod mechanism for small-part hydraulic forming according to claim 3, characterized in that: The adjusting mechanism (4) comprises a connecting plate (11), a sliding plate (12), two connecting shafts (13) and a screw body (14); the connecting plate (11) is mounted on the hydraulic rod (8); the sliding plate (12) is slidably connected to a plurality of supporting optical shafts (7) via a plurality of linear flanges (15); the two connecting shafts (13) and the screw body (14) are located between the connecting plate (11) and the sliding plate (12); the screw body (14) is screwed to the two connecting shafts (13); the two opposite ends of the two connecting shafts (13) are hinged with a first connecting rod (16) and a second connecting rod (17); four of the first connecting rods (16) are hinged to the connecting plate (11); and four of the second connecting rods (17) are hinged to the sliding plate (12).

5. The small-part hydraulic forming press rod mechanism according to claim 4, characterized in that: Two groups of side plates (18) are symmetrically arranged on the connecting plate (11), and the four first connecting rods (16) are symmetrically arranged in pairs and hinged to the two groups of side plates (18). Four connecting rod seats (19) are provided on the sliding plate (12), and the four second connecting rods (17) are symmetrically arranged in pairs and hinged to the four connecting rod seats (19) respectively.

6. The pressure rod mechanism for small-part hydraulic forming according to claim 5, characterized in that: The screw body (14) is a T-type screw, and the screw body (14) is a bidirectional screw.

7. The pressure rod mechanism for small-part hydraulic forming according to claim 6, characterized in that: A rotating wheel (20) is provided at one end of the screw body (14).

8. The pressure rod mechanism for small-part hydraulic forming according to claim 7, characterized in that: The connecting shaft (13) is provided with a threaded hole (21), and the screw body (14) is screwed into the threaded hole (21).

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