CN218134240U - Bending forming die for water heater support - Google Patents

Abstract

The utility model relates to a stamping die, in particular to a water heater bracket bending forming die. It includes a lower mold base and an upper mold base. A lower template is arranged on the upper surface of the lower mold base, and the four sides of the lower template have limit blocks. There is an upper template above the lower template, and forming knives are arranged on the lower plate surface of the upper template corresponding to the spacing, and an upper pressing plate is arranged between the forming knives, and the upper pressing plate is connected with the upper template through an upper spring. It is characterized in that the lower mold plate corresponding to the small bend of the water heater support blank has a relief opening, and the lower mold base corresponding to the relief opening has a slider, and there is a return spring between the slider and the lower mold base, and the sliders are fixed. There are punches arranged towards the corresponding relief opening, and the top of the slider has a slope. Wedges are fixed on the upper mold base above the inclined plane. The mold adopts low labor cost, simple and convenient processing process, and low manufacturing cost.

Description

Water heater bracket bending forming mold

technical field

The utility model relates to a stamping die, in particular to a water heater support bending forming die used for forming large bends and small bends of the water heater support at one time.

Background technique

It is known in the water heater manufacturing industry that the water heater bracket needs to be bent and formed during the processing process, which is mostly processed by the water heater bracket bending and forming mold. The bending and forming processing of the water heater bracket is divided into large bending processing and small bending processing. The shape of the water heater bracket before bending and forming is shown in Figure 1, and the shape of the water heater bracket after bending and forming is shown in Figure 2. The location is at B in Figure 2.

At present, there are two sets of molds used for the bending and forming of water heater brackets. That is to say, two sets of molds are used for processing in two processes, one for large bends and one for small bends. However, dividing two processes requires two stations, and each station needs to be equipped with a staff member, which requires relatively high labor costs. Moreover, two times of processing just need to discharge and take out materials twice, and the processing process is loaded down with trivial details. In addition, the manufacturing cost of the two sets of molds is relatively high.

Utility model content

The technical problem to be solved by the utility model is to provide a water heater bracket bending forming mold, which has low labor cost, simple processing process and low manufacturing cost.

In order to solve the above problems, the following technical solutions are provided:

The water heater bracket bending forming mold of the utility model comprises a lower mold base and an upper mold base arranged side by side. A horizontally arranged lower formwork is fixed on the upper surface of the lower mold base, and the lower mold bases corresponding to the four sides of the lower formwork are provided with limit blocks for limiting the blank of the water heater bracket. There is a distance between the sides of the lower template to facilitate the bending of the water heater support blank. There is a horizontally arranged upper template above the lower template, forming knives are arranged on the lower plate surface of the upper template corresponding to the distance, and there is a horizontally arranged upper pressing plate between the forming knives, and the upper pressing plate is connected to the upper template through an upper spring. The upper pressing plate is in the state of not receiving external force, and the bottom of the upper pressing plate protrudes from the lower surface of the forming knife. It is characterized in that the lower mold plate corresponding to the small bend of the water heater support blank has a relief opening, and the lower mold base corresponding to the relief opening has a slider, and the slider and the lower mold base are in the direction of approaching and away from the corresponding One side of the relief opening is fitted in a sliding manner. There is a return spring between the slide block and the lower die seat. The punches arranged toward the corresponding relief opening are fixed on the slide block. The top of the slide block has a slope, and the slope reaches the corresponding relief opening The distance between them increases gradually from top to bottom. The upper mold base above the slope is fixed with a wedge, and the wedge is adapted to the slope, so that after the wedge goes down and touches the slope, the return spring is compressed, and the slider slides to the side close to the corresponding relief opening .

Wherein, there are not less than two vertically arranged stripping ejector pins in the lower formwork, the lower ends of the ejector pins are fixed with stripping springs, and when the stripping springs are in an uncompressed state, the upper ends of the stripping ejector pins protrude Above the upper plate surface of the lower template, when the stripping spring is in a compressed state, the stripping ejector rod extends into the lower template

There are limit bars on both sides of the slider. There is a guide groove on the lower mold base corresponding to the slider. There is a guide block in the guide groove. The guide block is fixedly connected with the slider. Between one end of the guide groove of the mouth, a stopper is fixed on the corresponding lower mold base far away from the end of the slider of the punch, and a copper plate is fixed on the side of the stopper close to the slider.

There are guide posts at the four corners of the upper die base, and guide sleeves are arranged on the lower die base corresponding to the guide posts.

Adopting the above scheme has the following advantages:

Because the water heater bracket blank of the water heater bracket bending forming mold of the utility model is small-bent, the upper template corresponding to the small bend has a relief opening, and the lower mold base corresponding to the yield opening has a slider, and there is a gap between the slider and the lower mold base. It fits in a sliding manner toward the side close to and away from the corresponding relief opening. There is a return spring between the slide block and the lower die seat. The punches arranged toward the corresponding relief opening are fixed on the slide block. The top of the slide block has a slope , the distance between the inclined plane and the corresponding relief opening gradually increases from top to bottom, and the upper mold base above the inclined plane is fixed with wedges, which are adapted to the inclined plane. When in use, the upper mold base is connected with the pressure head of the press, and the lower mold base is fixed on the fixing plate of the press below the pressure head. When working, first place the blank of the water heater bracket before forming on the lower template, so that the four sides of the bracket are offset against the corresponding limit blocks; then, the press is controlled to start, and the pressure head of the press drives the upper mold seat to go down, and the upper template presses down. On the water heater bracket blank, clamp the water heater bracket blank; then, the pressure head continues to descend, because the upper spring is compressed, the upper platen goes up, the forming knife and the water heater bracket blank are offset around, and the big bending is formed. Afterwards, after the large bending is completed, the pressure head of the press drives the upper mold base to continue downward, the wedge block and the slope of the slider are offset, the return spring is compressed, the wedge block moves toward the side of the relief port, and the punch is formed The small bends of the final water heater bracket blank are offset against each other, and the small bends are formed. Finally, the pressure head of the press drives the upper mold base upward to reset, and the bending and forming are completed. The mold can be used to complete two bendings in one stamping, that is, one station can be used to complete two bending processes, so that only one worker can complete the bending and forming of the water heater bracket blank, which greatly reduces labor costs. Moreover, only one operation can complete two bendings, which greatly simplifies the working process. In addition, only one set of molds can greatly reduce the manufacturing cost.

Description of drawings

Fig. 1 is a schematic structural view of a water heater bracket in the background technology before bending and forming;

Fig. 2 is a schematic structural view of the water heater bracket in the background technology after being bent and formed;

Fig. 3 is a structural schematic diagram of the water heater bracket bending forming mold of the present utility model;

Fig. 4 is a mold clamping state diagram of the water heater bracket bending forming mold of the present utility model;

Fig. 5 is a schematic sectional view taken along the D-D direction of Fig. 4;

Fig. 6 is a three-dimensional schematic view of the water heater bracket bending forming mold of the present invention before pressing.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figures 3 to 6, the water heater bracket bending forming mold of the present invention includes a lower mold base 1 and an upper mold base 5 arranged side by side. The upper surface of the lower mold base 1 is fixed with a horizontally arranged lower formwork 4, and the lower mold base 1 corresponding to the four sides of the lower mold base 4 has a limit block 12 for limiting the blank of the water heater bracket. There is a distance between the bit block 12 and the side of the corresponding lower template 4 to facilitate the bending of the water heater support blank. There is a horizontally arranged upper template 14 above the lower template 4, and there are forming knives 15 on the lower plate surface of the upper template 14 corresponding to the distance, and there are horizontally arranged upper pressing plates 18 between the forming knives 15, and the upper pressing plates 18 pass through The upper spring links to each other with the upper template 14, and the upper pressing plate 18 is in the state of not receiving external force, and the bottom of the upper pressing plate 18 stretches out from the lower surface of the forming knife 15. The lower template 4 corresponding to the small bend of the water heater bracket blank has a relief opening 19, and the lower mold base 1 corresponding to the relief opening 19 has a slider 7, and the slider 7 and the lower mold base 1 are in a direction close to each other. 1. The side sliding away from the corresponding relief port 19 fits in a sliding manner. There is a return spring 16 between the slide block 7 and the lower mold base 1. The slide block 7 is fixed with a punch 20 arranged toward the corresponding relief port 19. The slide block The top of 7 has inclined plane 8, and the distance between inclined plane 8 and corresponding give way mouth 19 becomes larger gradually from top to bottom. The upper mold base 5 above the inclined plane 8 is fixed with wedges 6, and the wedges 6 are adapted to the inclined plane 8, so that after the wedges 6 descend against the inclined plane 8, the return spring 16 is compressed, and the slide block 7 moves toward Slide near the side corresponding to the relief opening 19.

There are no less than two vertically arranged stripping ejector pins 13 in the lower template 4, the lower ends of the ejector pins are fixed with stripping springs, and when the stripping springs are in an uncompressed state, the upper ends of the stripping ejector pins 13 stretch out. Out above the upper plate surface of the lower template 4, when the stripping spring is in a compressed state, the stripping ejector pin 13 extends into the lower template 4

There are limit bars 11 on both sides of the slide block 7, and a guide groove is arranged on the lower mold base 1 corresponding to the slide block 7, and a guide block 17 is arranged in the guide groove, and the guide block 17 is fixedly connected with the slide block 7, and the return spring 16 Located between the guide block 17 and one end of the guide groove close to the corresponding relief port 19, a stopper 9 is fixed on the lower mold base 1 corresponding to the end far away from the slider 7 of the punch 20, and a stopper 9 is fixed on the side of the stopper 9 near the slider 7. Copper plate 10.

There are guide posts 3 at the four corners of the upper die base 5 , and guide sleeves 2 are arranged on the lower die base 1 corresponding to the guide posts 3 .

During use, upper mold base 5 is connected with the pressure head of press, and lower mold base 1 is fixed on the fixed plate of the press below the pressure head. During work, the water heater bracket blank before forming is placed on the lower template 4, so that the four sides of the bracket are offset against the corresponding limit blocks 12. Then, the press is controlled to start, and the pressure head of the press drives the upper mold base 5 to go down, and the upper template 14 is pressed on the water heater support blank to clamp the water heater support blank. Then, the pressure head continues to descend, and because the upper spring is compressed, the upper pressing plate 18 ascends, and the forming knife 15 and the water heater bracket blank are offset around to carry out large bending forming. Afterwards, after the large bending is completed, the pressure head of the press drives the upper mold base 5 to continue downward, the wedge 6 is offset against the slope 8 of the slider 7, the return spring 16 is compressed, and the wedge 6 moves toward a side of the relief opening 19. Move sideways, and the punch 20 offsets against the small bend of the water heater support blank after forming, and performs small bend forming. Finally, the pressure head of the press drives the upper mold base 5 to move upward and reset, that is, the bending and forming are completed.

Claims (4)

1. The bending forming die for the water heater support comprises a lower die holder (1) and an upper die holder (5) which are arranged side by side; the upper surface of the lower die holder (1) is fixedly provided with a horizontally arranged lower die plate (4), the lower die holders (1) corresponding to the four side edges of the lower die plate (4) are respectively provided with a limiting block (12) for limiting the water heater support blank, and a space for bending the water heater support blank is formed between each limiting block (12) and the corresponding side edge of the lower die plate (4); an upper template (14) is horizontally arranged above the lower template (4), forming cutters (15) are arranged on the lower plate surfaces of the upper templates (14) corresponding to the intervals, upper pressure plates (18) are horizontally arranged among the forming cutters (15), the upper pressure plates (18) are connected with the upper template (14) through upper springs, the upper pressure plates (18) are in an external force non-receiving state, and the bottoms of the upper pressure plates (18) extend out of the lower surfaces of the forming cutters (15); the water heater support blank small bending die is characterized in that a yielding opening (19) is formed in a lower template (4) corresponding to a small bending of the water heater support blank, a sliding block (7) is arranged on a lower die base (1) corresponding to the yielding opening (19), the sliding block (7) is in sliding fit with the lower die base (1) towards one side close to and far away from the corresponding yielding opening (19), a reset spring (16) is arranged between the sliding block (7) and the lower die base (1), a punching head (20) which is arranged towards the corresponding yielding opening (19) is fixed on the sliding block (7), an inclined surface (8) is formed in the top of the sliding block (7), and the distance between the inclined surface (8) and the corresponding yielding opening (19) is gradually increased from top to bottom; and the upper die base (5) above the inclined plane (8) is fixedly provided with a wedge block (6), the wedge block (6) is matched with the inclined plane (8), so that after the wedge block (6) descends to abut against the inclined plane (8), the return spring (16) is compressed, and the sliding block (7) slides towards one side close to the corresponding position-giving opening (19).

2. The bending and forming die for the water heater support frame as claimed in claim 1, wherein at least two vertically arranged stripping ejector rods (13) are arranged in the lower die plate (4), stripping springs are fixed at the lower ends of the ejector rods, the upper ends of the stripping ejector rods (13) extend out of the upper plate surface of the lower die plate (4) when the stripping springs are in an uncompressed state, and the stripping ejector rods (13) extend into the lower die plate (4) when the stripping springs are in a compressed state.

3. The bending and forming die for the water heater support according to claim 1, wherein the two sides of the sliding block (7) are provided with a limiting strip (11), the lower die holder (1) corresponding to the sliding block (7) is provided with a guide groove, a guide block (17) is arranged in the guide groove, the guide block (17) is fixedly connected with the sliding block (7), the reset spring (16) is arranged between the guide block (17) and one end of the guide groove close to the corresponding yielding port (19), a stop block (9) is fixed on the lower die holder (1) corresponding to one end of the sliding block (7) far away from the punch (20), and a copper plate (10) is fixed on one side of the stop block (9) close to the sliding block (7).

4. The bending and forming die for the water heater support according to any one of claims 1 to 3, wherein guide posts (3) are arranged at four corners of the upper die holder (5), and guide sleeves (2) are arranged on the lower die holder (1) corresponding to the guide posts (3).

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