CN201427397Y - U-shaped cross-section profile bilateral notch mold - Google Patents

Abstract

The utility model discloses a die for forming notches on two edges of a U-shaped cross section profile. The die is characterized in that a male die (9) is fixed on an upper die plate (5) through a bolt (6), a first female die (15) and a second female die 12 are superimposed together and then fixed on a lower die plate (13) through a bolt (14, and a drawbar passes through an upper die plate (5) andis fixed on the lower die plate (13) through a bolt (15) to ensure the male die (9) to slide with respect to the first female die (15) and the second female die (12) all the time during operating cycle, without detachment; and an I-shaped pressure plate (7) is pressed on an upper die plate (5) through a press cover (8), two springs are arranged between the upper surface groove of the upper die plate (15) and the pressure plate (7), and an elastic polyurethane block (16) is arranged between the upper die plate (5) and the first female die (15). The die has the advantages of simple and compactstructure, easy manufacturing, high guide precision, stable notch quality, low cost, and high production efficiency.

Description

U-shaped cross-section profile bilateral notch mold

technical field

The utility model relates to a U-shaped cross-section profile bilateral incision mold, which is mainly used for the incision before bending and forming of automobile glass runners, and belongs to the technical field of moulds.

Background technique

Automobile glass runners are formed by bending metal profiles with U-shaped sections. The corners are easy to wrinkle during bending, so before bending, the straight profiles must be notched on both sides corresponding to the corners, so as to reduce the possibility of wrinkling during bending. produce. In the prior art, two sets of dies are used to punch two slits respectively, which not only increases the cost, but also causes the relative positions of the two slits to be dislocated due to two positionings, and greatly reduces production efficiency.

Contents of the invention

Aiming at the above-mentioned deficiencies existing in the prior art, the utility model provides a U-shaped cross-section profile bilateral notch die, the utility model is simple in structure, and the quality of the incision is stable, and it can complete the punching of the two incisions of the U-shaped cross-section profile on one set of moulds. cut, and the shape of the two cuts can be different.

In order to achieve the above object, the utility model adopts the following technical scheme: the U-shaped cross-section profile bilateral notch mold includes upper and lower templates, punches, dies, pull bars, pressing parts and elastic elements. The punch used to complete the cut is fixed on the upper template. The punch here can process two kinds of edge shapes at two positions in the axial direction, and the edge position is determined according to the size of the section of the cut profile. The two dies corresponding to the punch are sequentially installed on the lower template, and the punch is inserted into the die and cooperates with the die. Fix the two tie rods on the lower formwork and pass through the corresponding holes of the upper formwork. Adjust the length of the tie rods. The head of the tie rods can limit the uppermost position of the movement of the upper formwork, so as to ensure that the punch is always in contact with the die during the entire working cycle. Coordinate movement without leaving the die. An elastic element polyurethane is set between the upper template and the die to play the role of resetting the punch. At the same time, a pressing part is also arranged on the upper template, and the pressing part stops at the initial position by the action of a spring. Before work, fix the lower formwork on the press workbench with a pressing plate, place the profile (which can be a variety of U-shaped cross-sections) on the die, press the pressing plate first when the slider of the press moves down, and press the profile through the pressing plate Press against the die, the slider continues to go down, so that the upper template drives the punch down to complete the punching of the incision. After the slider of the press returns, the upper template resets with the punch and the pressing plate under the action of polyurethane. to the initial position.

The beneficial effect of the utility model is that two types of cutting edges are designed on one punch to cooperate with two concave dies respectively, and the bilateral incision of the U-shaped section can be completed in one working cycle of the mold, and the production efficiency is high. The relative position accuracy of the two cutouts is high. The punch is always matched with the die in the whole working cycle without separation, the force of punching is balanced, the guiding precision is high, and the quality of the incision is stable. Since no additional guide device is needed, the structure of the mold is simple and compact, the processing and manufacturing are easy, and the cost of the mold is greatly reduced.

Description of drawings

Fig. 1 is the front view of notch die when initial state;

Fig. 2 is the left sectional view of slit die when Fig. 2 is initial state;

Fig. 3 is a left sectional view of the slit die when the slit punching is finished.

In Figure 1, 1. nut, 2. pull rod, 3. spring, 4. screw, 5. upper template, 6. screw, 7. binder plate, 8. cover plate, 9. punch, 10. binder Block, 11. U-shaped section profile, 12. second die, 13. lower formwork, 14. screw, 15. first die, 16. polyurethane block.

Detailed ways

In the incision mold, the punch 9 is fixed on the upper template 5 with screws 6 (see Figure 1 and Figure 2), while the first die 15 and the second die 12 are stacked together and fixed on the lower template 13 by screws 14, and locked by nuts 1. Tight, the pull rod 2 passes through the upper template 5, and the head of the pull rod 2 restricts the upper template 5 to the uppermost position, thereby ensuring that the punch 9 always slides with the first die 15 and the second die 12 during the entire working cycle. not separated. The punch 9 has unequal sections in the axial direction, and the cross-sectional shape of the upper part of the punch 9 is a combination of a U-shaped cross-section profile 11 and a rectangle. the same and work with each other. Open the gap of a parallel workbench in the middle of punch 9 tops, the bottom of the gap is flush with the die opening of the first die 15 during the loading state, which is convenient for feeding, and the top edge of the gap is the upper cutting edge a. The cross-sectional shape of the lower part of the punch 9 is a combination of a U-shaped cross-section profile 11 lower cutout shape and a rectangle. The shape of the opening in the middle of the second die 12 is the same as the lower cross-sectional shape of the punch 9 and cooperates with each other. The lower surface of the punch 9 The part having the same shape as the lower edge of the U-shaped cross section profile 11 is the lower cutting edge b. The upper cutting edge a of punch 9 cooperates with the first die 15 to complete the otch on the U-shaped cross-section profile 11, and the lower edge b of the punch 9 cooperates with the second die 12 to complete the otch on the U-shaped cross-section profile 11. The binder plate 7 is in the position shown in Figure 1 under the action of the spring 3, the gland 8 presses it against the upper template 5, and the binder block 10 made of polyurethane is fixed on the binder plate 7 with screws. , the lower template 13 of the slit die is fixed on the workbench of the press, the U-shaped cross-section profile 11 is placed on the first die 15 and the second die 12, and the press slider first contacts the binder plate 7 when it goes down, and the The pressing block 10 on the pressing plate 7 presses against the U-shaped cross-section profile 11, the press slider continues to move downward, and the upper template 5 is pressed down, the polyurethane block 16 is compressed, and the punch 9 moves downward. Firstly, the lower cutting edge b and the second The cutting edges of the two dies 12 meet to complete the lower incision of the U-shaped cross-section profile 11, and then the upper cutting edge a meets the cutting edge of the first die 15 to complete the upper incision of the U-shaped cross-section profile 11. The waste material that lower limit is cut off falls in the waste material hole of lower formwork 13 (seeing figure 3). After the slider of the press returns, the pressing plate 7 is reset under the action of the spring 3 first, and then the upper template 5, the punch 9, the pressing plate 7 and the pressing block 10 are reset due to the elastic force of the polyurethane block 16. The cut waste is taken out of the first die 15 when the punch 9 returns, and stays under the upper cutting edge a of the punch, and finally the U-shaped cross-section profile 11 is taken out from the mold, while leaving the upper cutting edge a. The waste material under mouth a is taken away.

Claims (4)

1. bilateral louvered die of U type cross section section bar, the fixing lower bolster of louvered die (13) on the workbench of forcing press, U type cross section section bar (11) is placed on first die (15) and second die (12), it is characterized in that: the punch of louvered die (9) is fixed in cope match-plate pattern (5) by screw (6), first die (15) and second die (12) are superimposed and are fixed on lower bolster (13) by screw (14), pull bar (2) passes cope match-plate pattern (5) and is fixed on the lower bolster (13) by nut (1), cooperates slip with first die (15) and second die (12) all the time and do not separate in working cycles to guarantee punch (9); Holding pad (7) is pressed against on the cope match-plate pattern (5) by gland (8), holding pad (7) is " worker " shape part, between the upper surface groove of cope match-plate pattern (5) and the holding pad (7) two springs (3) are set, between cope match-plate pattern (5) and first die (15), elastic polyurethane piece (16) are set.

2. the bilateral louvered die of U type section bar according to claim 1, it is characterized in that: punch (9) axially is being unequal section, the cross sectional shape on punch (9) top is U type cross section section bar (11) top kerf and rectangular combination, the shape of perforate is identical with the top cross sectional shape of punch (9) in the middle of described first die (15), and cooperatively interacts; The cross sectional shape of punch (9) bottom is following kerf of U type cross section section bar (11) and rectangular combination, and the shape of perforate is identical with the lower section shape of punch (9) in the middle of described second die (12), and cooperatively interacts.

3. the bilateral louvered die of U type section bar according to claim 1 and 2, it is characterized in that: the gap of in the middle of punch (9) top, opening a multiple operation platform, the gap top is top cutting edge a, and punch (9) lower surface and the following kerf same section of U type cross section section bar (11) are bottom cutting edge b.

4. the bilateral louvered die of U type section bar according to claim 1 is characterized in that: binder block (10) is installed in the bottom of holding pad (7).

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