Chuck opening and closing type structure tool

Abstract

The utility model discloses a chuck open-close type structure tool which comprises a base plate, a lower die, an upper die, a guide column, an elastic piece A, a fixing plate, a locking plate, a die frame A and a die frame B. The base plate is arranged between the lower die and the die frame A. The upper die is arranged on the fixing plate and penetrates through the locking plate, the guide column is arranged on the die frame B, the guide column is connected with the fixing plate and the locking plate, and the elastic piece A is arranged on the elastic piece A. And the elastic piece A is arranged on the guide column. The tool disclosed by the utility model can realize one-step forming processing of an inverted cone shape with a small opening part and a large bottom inner cavity of a part, and has the advantages of smooth demolding after bending and no size change and out-of-tolerance.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to a clamp opening and closing type structural tooling. Background Art

[0002] With the gradual advancement and development of my country's large aircraft projects, manned space stations, lunar exploration projects, deep space exploration and commercial aerospace projects, my country's demand for scientific equipment loads and fuel loads for aerospace vehicles has gradually increased, and it is urgent to achieve model reliability through high-reliability circular connectors. In the processing of aerospace product signal shielding reed parts, inverted cone parts often appear. This type of parts is often processed by manual shaping of inverted cones. When manually shaping the inverted cone, the cylindrical part is similar to the shape of a beer bottle cap with a small mouth and a large inner cavity at the bottom. After the part is formed, it will be wrapped on the forming mandrel and cannot be removed. It can only be manually forced out. The part will be deformed after being removed, and the size will be out of tolerance, which does not meet the use requirements. In addition, it is difficult to form it in one time, and the requirements for aerospace parts are high. The parts after bending are very soft after solid solution, and the size of the bending mouth is seriously out of tolerance.

[0003] For the molding of such parts, in order to ensure the size of the mouth after molding, the traditional method is to use a mandrel to assist, and manually form each tooth to ensure the size required by the drawing. However, this method is only suitable for small batch processing, or parts with a large circular cavity. After bending and forced release, it will deform. If the inner cavity of the part is too small, the shielding teeth will deform more and directly open in the direction of the shape, resulting in the inverted cone mouth size being the same as the bottom size, and the part cannot be formed, and the performance indicators and reliability of the circular connector are affected.

[0004] The patent document with publication number CN207139618U discloses an automatic clamping device for an upper chuck, including an input shaft and a clamping tool and an execution tool that are connected to each other. The clamping tool is composed of a first connecting flange, a clamping ring, a cylinder and a support portion from top to bottom. The execution tool is composed of a second connecting flange, a deflection opening and closing mechanism, a guide column and a clamped ring from top to bottom. The first connecting flange is sleeved in the clamped ring. The input shaft is arranged in the rotation axis direction of the execution tool. The cylinder is arranged at the bottom end of the clamping ring. The cylinder controls the clamping ring. The guide column is arranged between the deflection opening and closing mechanism and the clamped ring. The clamping tool is used to clamp the execution tool so that the input shaft can be inserted normally. The execution tool is used to clamp the input shaft. This device can realize automatic clamping and ensure no gap. However, this device is not suitable for processing parts with cone / truncated cone shapes. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a clamp opening and closing structure tooling, which can solve the problems.

[0006] The utility model is realized through the following technical solutions.

[0007] The utility model provides a clamp opening and closing structure tooling, comprising a pad, a lower die, an upper die, a guide column, an elastic member A, a fixed plate, a locking plate, a mold frame A, and a mold frame B. The pad is arranged between the lower die and the mold frame A, the upper die is arranged on the fixed plate, the upper die passes through the locking plate, the guide column is arranged on the mold frame B, the guide column is respectively connected to the fixed plate and the locking plate, and the elastic member A is arranged on the guide column.

[0008] Preferably, a slide groove A is arranged on the pad, a slide groove B is arranged on the lower mold, a slide groove C is arranged on the mold frame A, and an elastic member B is arranged in the slide groove C.

[0009] Preferably, a push block is arranged in the slide groove B, a slide rod is arranged on one side of the push block, and the slide rod is arranged in the slide groove A for sliding connection.

[0010] Preferably, a limiting pin is provided on the lower die.

[0011] Preferably, the entrance of the chute B is chamfered.

[0012] Preferably, the fixed plate is connected to the mold frame B via an upper mold push platform, and one end of the upper mold is connected to the upper mold push platform.

[0013] Preferably, one end of the upper mold is in a truncated cone shape, and slots are arranged on the upper mold. The slots are evenly distributed on the upper mold in a circumference, and a lower recess is arranged on one end of the truncated cone-shaped upper mold.

[0014] Preferably, a hanging nail is provided on the locking plate.

[0015] Preferably, the mold frame A is connected to the backing plate and the lower mold by screws.

[0016] The beneficial effects of the utility model are:

[0017] During the pressing and forming process of the tooling of the utility model, after the upper die contacts the part, the center of the upper die is coaxial with the center of the part and the center of the lower model cavity, first the limiting pin starts to limit, then the limiting pin pushes the locking plate and the heavy-load spring to shrink, and then the spring chuck of the upper die pops open; the pressing is continued, and the part is bent and formed in cooperation with the push block, and the pressing is continued to the end of the stroke, and the part is gradually bent to exceed the specified size to provide a rebound margin, and the upper die and the push block collide to stabilize the size and shape; after completing one tooling action, the upper die is pulled back, and when separated from the limiting pin, the heavy-load spring pushes the locking plate to close the end face of the upper die in a chuck shape, and after closing, the outer diameter of the upper die is smaller than the mouth size of the formed part, the part automatically disengages from the head of the upper die, and the push block rebounds and resets under the action of the medium-load spring, and the forming effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of the utility model;

[0019] In the figure: 1- pad, 2- lower die, 3- push block, 4- upper die, 5- guide column, 6- hanging nail, 7- elastic part A, 8- fixing plate, 9- locking plate, 10- limiting nail, 11- elastic part B, 12- mold frame A, 13- mold frame B, 14- slide groove A, 15- slide groove B, 16- slide groove C, 17- slide rod, 18- upper die push platform, 19- slot, 20- lower recess. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0021] Example:

[0022] like Figure 1 As shown, a chuck opening and closing structure tooling includes a pad 1, a lower die 2, an upper die 4, a guide column 5, an elastic member A7, a fixed plate 8, a locking plate 9, a mold frame A12, and a mold frame B13. The pad 1 is arranged between the lower die 2 and the mold frame A12, the upper die 4 is arranged on the fixed plate 8, the upper die 4 passes through the locking plate 9, the guide column 5 is arranged on the mold frame B13, the guide column 5 is respectively connected to the fixed plate 8 and the locking plate 9, and the elastic member A7 is arranged on the guide column 5. The upper die 4 is a spring chuck type upper die. The elastic member A7 is a heavy-duty spring.

[0023] The backing plate 1 is provided with a slide groove A14, the cross section of which is T-shaped, the lower mold 2 is provided with a slide groove B15, the mold frame A12 is provided with a slide groove C16, and an elastic member B11 is provided in the slide groove C16. The slide groove B15 is a cavity. The elastic member B11 is a medium-load spring, and the elastic member B11 contacts the slide rod 17.

[0024] The fixing plate 8 and the formwork B13 are fixed with studs. Holes are opened on the fixing plate 8 for the hanging nails 6 to pass through. The hanging nails 6 are respectively connected and locked with the fixing plate 8, the locking plate 9 and the formwork B13.

[0025] The push block 3 is arranged in the slide groove B15, and a slide bar 17 is arranged on one side of the push block 3. The slide bar 17 is arranged in the slide groove A14 for sliding connection. The slide bar 17 has a T-shaped cross section, which can prevent it from slipping out of the slide groove A14.

[0026] The lower die 2 is provided with a limiting pin 10 .

[0027] The entrance of the slide groove B15 is provided with a chamfer R1.5 to facilitate the placement of parts.

[0028] The fixed plate 8 is connected to the mold frame B13 through the upper mold pusher 18, and one end of the upper mold 4 is connected to the upper mold pusher 18. The rebound of the push block 3 is achieved through the mold frame B13.

[0029] One end of the upper die 4 is truncated cone-shaped and has an elastic structure. The truncated cone size is adapted to the inner circle of the part shape, and the upper die 4 is circular. A slot 19 is set at one end of the upper die 4, and the slots 19 are evenly distributed vertically on the upper die 4 in 8 equal parts of the circumference. A lower concave portion 20 is set at one end of the upper die 4, where there are annular grooves distributed along the circumference of the upper die 4, which is convenient for demoulding after processing the parts. The material of one end of the truncated cone of the upper die 4 is DC53. By setting the slot 19, the truncated cone end of the upper die 4 can be freely contracted and bounced open to form an elastic chuck, which is convenient for processing parts. Due to the setting of the slot 19 and the DC53 material, the more parts of the truncated cone side of the upper die 4 pass through the locking plate 9, the larger the diameter of the truncated cone end of the upper die 4 is due to the dispersion of the chuck structure, and vice versa.

[0030] The locking plate 9 is provided with a hanging nail 6. The locking assembly includes the locking plate 9 and the hanging nail 6, which are compressed and opened by the elastic member A7 to control the upper die 4. The hanging nail 6 can ensure the balance of the locking plate 9 during operation. After the upper die 4 enters the part, the limiting nail 10 limits the locking plate 9, and the upper die 4 is smoothly opened to bend the part.

[0031] The mold frame A12 is connected with the backing plate 1 and the lower mold 2 by screws, and the mold frame A12 is circular. The lower mold assembly includes the mold frame A12, the lower mold 2 and the limiting pin 10.

[0032] When the tooling is closed, it is ensured that the upper mold 4 and the lower mold 12 are on the same center line.

[0033] A method for using a chuck opening and closing structure tooling includes the following steps: when forming a part through the tooling of the present invention, the tooling is installed on a punch press and positioned by pins and fixed by screws. The part to be processed is placed in the slide groove B15 of the lower mold 2, that is, at the intersection of the push block 3 support and the entrance chamfer of the slide groove B15. After the tooling is installed and the tooling moves downward, after the upper mold 4 contacts the part, the center of the upper mold 4 must be coaxial with the center of the part and the center of the slide groove B15 of the lower mold 12. The punch press is started, driving the upper mold 4, elastic part A7, and locking plate 9 of the tooling to be pressed downward as a whole. After the upper mold 4 contacts the part, the limit pin 10 pushes the locking plate 9 and the elastic part A7 to contract, and then the part of one end of the upper mold 4 that passes through the locking plate 9 becomes longer, and the diameter of the elastic chuck of the upper mold 4 spreads out and becomes larger; the upper mold 4, the elastic part A7 continues to press down and cooperates with the push block 3 to bend the part into shape; when the upper mold 4 and the elastic member A7 continue to press down to the end of the stroke, the part is gradually bent to a size exceeding the specified size to provide a rebound margin, and the upper mold 4 and the push block 3 hit each other to stabilize the size and shape of the part; after completing a tooling action, the upper mold 4 is pulled back and separated from the limit pin 10, and the elastic member A7 pushes the locking plate 9 to close the chuck-shaped end face of the upper mold 4. After closing, the outer diameter of the upper mold 4 is smaller than the mouth size of the molded part, and the part automatically escapes from the head of the upper mold 4, and the push block 3 rebounds and resets under the action of the elastic member AB11.

[0034] The tooling can realize one-time forming of an inverted cone-shaped part with a small mouth and a large bottom cavity, and has the advantages of smooth demoulding after bending and no dimensional change or deviation.

[0035] The key core signal shielding reed parts in the circular electrical connector are formed by using a spring chuck opening and closing structure tooling. This physical tooling is used for the bending forming of the signal shielding reeds of aerospace circular connectors. The design can be extended to the forming of cylindrical parts with a beer bottle cap-like shape, such as a small mouth and a large bottom cavity.

Claims

1. A clamping head opening and closing structure tooling, characterized in that: The invention comprises a pad (1), a lower die (2), an upper die (4), a guide column (5), an elastic member A (7), a fixed plate (8), a locking plate (9), a mold frame A (12), and a mold frame B (13). The pad (1) is arranged between the lower die (2) and the mold frame A (12). The upper die (4) is arranged on the fixed plate (8). The upper die (4) passes through the locking plate (9). The guide column (5) is arranged on the mold frame B (13). The guide column (5) is respectively connected to the fixed plate (8) and the locking plate (9). The elastic member A (7) is arranged on the guide column (5).

2. A clamping head opening and closing structure tooling as claimed in claim 1, characterized in that: A slide groove A (14) is arranged on the pad (1), a slide groove B (15) is arranged on the lower mold (2), a slide groove C (16) is arranged on the mold frame A (12), and an elastic member B (11) is arranged in the slide groove C (16).

3. A clamping head opening and closing structure tooling as claimed in claim 2, characterized in that: A push block (3) is arranged in the slide groove B (15), a slide rod (17) is arranged on one side of the push block (3), and the slide rod (17) is arranged in the slide groove A (14) for sliding connection.

4. A clamping head opening and closing structure tooling as claimed in claim 1, characterized in that: A limiting pin (10) is arranged on the lower die (2).

5. A clamping head opening and closing structure tooling as claimed in claim 2, characterized in that: The entrance of the chute B (15) is chamfered.

6. A clamping head opening and closing structure tooling as claimed in claim 1, characterized in that: The fixed plate (8) is connected to the mold frame B (13) via an upper mold push platform (18), and one end of the upper mold (4) is connected to the upper mold push platform (18).

7. A clamping head opening and closing structure tooling as claimed in claim 1, characterized in that: One end of the upper die (4) is in a truncated cone shape, and slots (19) are arranged on the upper die (4). The slots (19) are evenly distributed on the circumference of the upper die (4), and a lower concave portion (20) is arranged on one end of the truncated cone-shaped upper die (4).

8. The clamping head opening and closing structure tooling as claimed in claim 1, characterized in that: A hanging nail (6) is arranged on the locking plate (9).

9. The clamping head opening and closing structure tooling according to claim 1, characterized in that: The mold frame A (12) is connected to the backing plate (1) and the lower mold (2) through screws.

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