CN218134442U - Junction box drawing die with blank pressing - Google Patents

Abstract

The utility model discloses a stretching die for a junction box with a blanking edge. Driven by a down-pressing drive mechanism, the die moves downward. When the die touches a top plate, the top drive mechanism drives the top plate to move down. Until the top material plate touches the lower plate 2, the stretching of the flat iron plate is completed, and under the action of the edge forming die, a square protruding bezel and four circular protruding parts are pressed out on the top of the flat iron plate , The lower pressing driving mechanism drives the upper mold part to reset, and the ejector plate ejects the stretched product out of the punch under the action of the upper driving mechanism. Cutting edge material and punching holes are completed by subsequent molds. The utility model completes the stretching of the flat iron plate at one time through the cooperation of the upper mold part and the lower mold part, and at the same time completes the stretching of the blank holder at the top. The utility model has the advantages of simple structure, easy operation, high working efficiency and manpower saving.

Description

A stretching die for a junction box with a crimping edge

technical field

The utility model relates to the technical field of junction box processing, in particular to a junction box stretching die with crimping.

Background technique

During the operation of the car, a large number of important lines such as power cables and communication cables need to be installed, and these cables need to be arranged inside the elevator shaft along with the elevator car. In order to connect these cables, or connect the cables To connect wires and electrical equipment, it is often necessary to place the connectors and connecting equipment in a junction box, and position them through the junction box on the one hand, and play a necessary role in protecting them on the other hand.

In the existing processing and production process of the junction box, the flat iron plate cannot be stretched and formed by the stretching mold at one time, especially the crimping on the top, which needs to be completed by two molds, and the work efficiency is very low.

Utility model content

The purpose of the utility model is to provide a stretching die for a junction box with a blanking edge in order to make up for the defects of the prior art.

The utility model is achieved through the following technical solutions:

A stretching die for a junction box with a blanking edge, comprising an upper mold part and a lower mold part, the upper mold part includes an upper plate 1, and an upper plate 2 is fixedly connected to the lower part of the upper plate 1 through a support plate, A liner plate 1 is fixedly connected under the upper plate 2, a liner plate 2 is fixed under the liner plate 1, a die is fixed under the liner plate 2, and a die cavity is formed on the liner plate 1 and the liner plate 2. Corresponding to the center hole, a blanking die is installed in the center hole of the liner plate 1; the lower mold part includes a lower plate 1, a lower support plate is fixed on the lower plate 1, and a lower support plate is fixed on the lower support plate. There is a lower plate 2, on which a punch is fixed, the top surface of the punch is provided with a bump that is formed with the blanking die, and a top plate is set outside the punch, and the lower side of the top plate is The ejector rod is fixed, the lower end of the ejector rod moves through the lower plate 2, and the top plate is fixed at the lower end of the ejector rod, the upper plate 1 is fixedly connected with a downward driving mechanism, and the lower part of the upper plate is fixedly connected with the upper plate The top driving mechanism, when the down-pressing driving mechanism drives the upper mold part down to the lowermost end, the top driving mechanism drives the top plate to move down to touch the second bottom plate.

The size of the central hole of the second lining plate is slightly larger than the central hole of the first lining plate and the size of the die cavity.

The die cavity of the die, the central holes of the first and second lining plates and the punch are all square, and R angles are provided at the four corners.

The described blank forming die is a square concave module, and four strip grooves are arranged on the square concave module, and the four strip grooves are successively connected to form a square groove with four R angles. Four circular grooves are provided, and the four circular grooves are located inside the four corners of the square groove. The shape of the bump on the top surface of the punch is matched with the square groove and the circular groove respectively.

The pressing down driving mechanism and the pushing up driving mechanism are respectively the main cylinder of the hydraulic press and the lower cylinder of the hydraulic press.

At the initial position, the top surface of the punch is flush with the upper surface of the ejector plate, and the flat iron plate is placed on the ejector plate. Driven by the downward pressure driving mechanism, the die moves down. When the die touches the ejector plate , the top driving mechanism drives the top plate to move down until the top plate touches the bottom plate 2, and the stretching of the flat iron plate is completed. Under the action of the edge forming die, a square Protrude the blank holder and four circular protruding parts, the driving mechanism of the lower pressure drives the upper mold part to reset, and the ejector plate pushes the stretched product out of the punch under the action of the upper driving mechanism. Cutting edge material and punching holes are completed by subsequent molds.

The utility model has the advantages that: the utility model completes the stretching of the flat iron plate at one time through the cooperation of the upper mold part and the lower mold part, and at the same time completes the stretching of the blank holder at the top, has a simple structure, is easy to operate, and has high work efficiency. save human effort.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a bottom view of the blank forming die.

Fig. 3 is the front view of the blank forming die.

Figure 4 is a top view of the punch.

Figure 5 is a front view of the punch.

detailed description

As shown in Figures 1-5, a junction box stretching die with blanking includes an upper die part and a lower die part, and the upper die part includes an upper plate-1, under the upper plate-1 The upper plate 2 3 is fixedly connected by the support plate 2, the lining plate 1 4 is fixedly connected under the upper plate 2 3, the lining plate 2 5 is fixed under the lining plate 1 4, and the die is fixed below the lining plate 2 5 6. There are central holes corresponding to the die cavity on both the first lining plate 4 and the second lining plate 5. The size of the central hole of the second lining plate 5 is slightly larger than the central hole of the first lining plate 4 and the die cavity In this way, after the stretching is completed, when the upper mold is partially reset, it is easy to demould. In the central hole of liner plate one 4, edge forming die 7 is installed.

The lower mold part includes a lower plate one 8, a lower support plate 9 is fixed on the lower plate one 8, a lower plate two 10 is fixed on the lower support plate 9, a punch 11 is fixed on the lower plate two 10, and a convex mold 11 is fixed on the lower plate two 10. The top surface of the mold 11 is provided with the bump 12 of the blank forming die 7, i.e. square and circular, and a top material plate 13 is set outside the punch 11, and the lower side of the top material plate 13 is fixed. There is a push rod 14, the lower end of the push rod 14 moves through the lower plate 10, the lower end of the push rod 14 is fixed with a top plate 15, and the upper plate 1 is fixedly connected with a downward driving mechanism. The top plate 15 is fixedly connected with the upper top drive mechanism, and when the lower pressure drive mechanism drives the upper mold part to press down to the lowermost end, the upper top drive mechanism drives the top plate 13 to move down and touches the lower plate 2 10.

The die cavity of the die 6, the central holes of the first liner 4 and the second 5, and the punch 11 are all square, and the four corners are all provided with R angles, and the shape corresponds to a square junction box.

Described edge forming die 7 is a square concave module, and four strip grooves are arranged on the square concave module, and the four strip grooves are successively connected to form a square groove 71 with four R angles. Four circular grooves 72 are also arranged on the top, and the four circular grooves 72 are located inside the four corners of the square groove 71 . The shapes of the protrusions 12 on the top surface of the punch 11 match the square grooves 71 and the circular grooves 72 respectively.

The pressing down driving mechanism and the pushing up driving mechanism are respectively the main cylinder of the hydraulic press and the lower cylinder of the hydraulic press.

The utility model is a set of stretching dies with blank holders, and it is a die working on a hydraulic press. When the flat iron plate is placed on the top material plate, the upper die part moves downward under the action of the main cylinder of the hydraulic press. When moving to the top material plate, the top material plate moves downward under the action of the lower cylinder of the hydraulic press, and the upper mold part moves downward slowly until the top material plate and the lower plate two touch, and the stretching is completed, and the upper mold part automatically returns to the highest position. point, the ejector plate ejects the stretched product out of the punch under the action of the ejector pin.

Claims (5)

1. The utility model provides a take terminal box drawing die of blank pressing which characterized in that: the die comprises an upper die part and a lower die part, wherein the upper die part comprises an upper plate I, an upper plate II is fixedly connected below the upper plate I through a supporting plate, a lining plate I is fixedly connected below the upper plate II, a lining plate II is fixed below the lining plate I, a female die is fixed below the lining plate II, central holes corresponding to female die cavities are formed in the lining plate I and the lining plate II, and a blank pressing forming female die is arranged in the central hole of the lining plate I; the lower die part comprises a first lower plate, a second lower plate is fixed on the first lower plate, a male die is fixed on the second lower plate, a convex block of a female die for edge pressing forming is arranged on the top surface of the male die, an ejector plate is sleeved outside the male die, an ejector rod is fixed on the lower side surface of the ejector plate, the lower end of the ejector rod movably penetrates through the second lower plate, a top plate is fixed at the lower end of the ejector rod, a downward pressing driving mechanism is fixedly connected to the first upper plate, an upward pressing driving mechanism is fixedly connected to the lower surface of the top plate, and when the downward pressing driving mechanism drives the upper die part to be pressed to the lowest end, the upward pressing driving mechanism drives the ejector plate to move down to contact the second lower plate.

2. The junction box drawing die with the blank holder as claimed in claim 1, wherein: the size of the central hole of the second lining plate is slightly larger than that of the central hole of the first lining plate and the size of the concave die cavity.

3. The junction box drawing die with the blank holder as claimed in claim 1, wherein: the die cavity of the female die, the central holes of the first lining plate and the second lining plate and the male die are all square, and the four corners are provided with R corners.

4. The junction box drawing die with the edge pressing function as claimed in claim 3, wherein: the edge pressing forming female die is a square female die block, four strip-shaped grooves are formed in the square female die block, the four strip-shaped grooves are sequentially communicated to form a square groove with an R corner, four circular grooves are further formed in the square female die block, and the four circular grooves are located on the inner sides of four corners of the square groove; the shape of the convex block on the top surface of the convex die is respectively matched with the square groove and the circular groove.

5. The junction box drawing die with the edge pressing function as claimed in claim 1, wherein: the lower pressing driving mechanism and the upper pushing driving mechanism are respectively a main cylinder of the hydraulic machine and a lower cylinder of the hydraulic machine.

Images