Mobile phone frame bending continuous die

Abstract

The utility model belongs to the technical field of dies, and relates to a mobile phone frame bending continuous die which comprises an upper die and a lower die, a lower groove is formed in the middle of the lower die, forming side walls are arranged on the two sides of the lower groove, and cavities for workpiece forming are formed in the forming side walls of the lower groove. A containing groove allowing the mold block to move up and down is formed in the lower groove, a jacking cavity for containing a jacking air cylinder is formed in the bottom in the containing groove, a pair of detachable swing blocks is arranged at the bottom of the lower groove, and an arc shaft part is arranged at the bottom of the outer side face of each swing block. Arc holes penetrating through the lower mold front and back are formed in the two corners of the inner bottom of the lower groove, the arc shaft portion of each swing block can be inserted into the corresponding arc hole to form running fit, the cavity is formed in the inner side face of each swing block, a push rod hole is formed in the position, corresponding to the bottom of the lower groove, of the lower mold, and a push rod is arranged in the push rod hole. An elastic push rod is arranged in the push rod hole and elastically abuts against the swing block.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould technical field, concretely point to a kind of mobile phone frame bending progressive die. BACKGROUND

[0002] The existing mobile phone frame bending die includes upper die and lower die, the lower side of the upper die is provided with a punch structure, the punch structure includes a fixed block and a moving block, a sliding slope is arranged between the moving block and the fixed block, a detachable and replaceable forming block is arranged on the lower end of the moving block, a ejector pin for pushing the moving block downward is further arranged in the upper die, a lower groove is arranged in the middle of the lower die, forming side walls are arranged on both sides of the lower groove, a cavity for forming workpiece is arranged on the forming side wall of the lower groove, a receiving groove for the upward and downward movement of the die block is arranged in the lower groove, a push chamber for placing a lift cylinder is arranged at the bottom of the receiving groove, a part positioning groove is arranged on the lower die, the part positioning groove is composed of a die block arranged in the receiving groove and end face positioning plates at both ends, in the process of opening the existing die, the workpiece is shaped and deformed during bending, causing the workpiece to be in close contact with the vertical cavity, when the lift cylinder pushes the workpiece out of the vertical cavity of the cavity, the contact surface of the workpiece and the vertical cavity will still rub, causing scratches and surface quality defects, and since the cavity is opened on the body of the lower die, after multiple stamping, the surface quality of the cavity deteriorates, causing more scratches on the workpiece, the more the number of stamping, the more the surface of the cavity is worn, the worse the surface quality of the workpiece. UTILITY MODEL CONTENTS

[0003] The utility model aims at overcoming the defects in the prior art, and provides a mobile phone frame bending progressive die.

[0004] In order to achieve the above object, the technical scheme of the utility model is designed as a mobile phone frame bending continuous die, including upper die, lower die, the downside of upper die is equipped with punch structure, punch structure includes fixed block, moving block, the moving block and the fixed block between is equipped with sliding inclined plane, the lower end outside of moving block is equipped with detachable replacement forming block, the upper die is equipped with ejector pin that promotes moving block downwardly, the lower die middle part is equipped with lower groove, the both sides of lower groove are equipped with forming side wall, the forming side wall of lower groove is equipped with cavity for workpiece forming, the inside of lower groove is equipped with containing groove for die block up and down movement, the bottom of containing groove is equipped with push chamber for placing lift cylinder, the upper die is equipped with part positioning groove, the part positioning groove is composed of die block and end face positioning plate at both ends arranged in containing groove, the bottom of lower groove is equipped with a pair of detachable swing block, the bottom of each swing block outside face has circular arc shaft part, the two corners of the bottom of lower groove are equipped with circular arc hole that penetrates along the front and back of lower die, the circular arc shaft part of each swing block can be inserted into circular arc hole to form rotary fit, the inside face of each swing block is equipped with cavity, the corresponding lower die on the bottom of lower groove is equipped with push rod hole, the push rod hole is equipped with elastic push rod and swing block elastic abutment.

[0005] Further preferred technical scheme has still, be equipped with roller shaft on swing block, roller shaft penetrates swing block along the front and back direction of swing block and have part bare in cavity.

[0006] Further preferred technical scheme has still, be equipped with shaft hole for roller shaft to pass through on swing block, the lower part of shaft hole is connected and is equipped with sector cavity away from the lower groove side, a plurality of rollers are arranged in sector cavity, and the roller is arranged in parallel with roller shaft.

[0007] Further preferred technical scheme has still, one end positioning plate is equipped with installation groove, the installation groove is equipped with detachable mounting plate, the mounting plate is equipped with positioning notch, the mounting plate is installed on the end positioning plate by screw, another end positioning plate is equipped with open slot, the inside of open slot is equipped with detachable positioning block, the bottom of open slot is equipped with stepped insertion slot, the bottom of positioning block is equipped with stepped insertion block and the stepped insertion slot sliding fit, the inside face of positioning block and the corresponding side face of open slot are equipped with positioning spring.

[0008] Further preferred technical solutions also have, the upper mold includes the upper mold base, upper clamping plate, lower clamping plate arranged from top to bottom, the upper mold base, upper clamping plate, lower clamping plate fixed connection, the upper mold base, upper clamping plate, lower clamping plate again with the upper pressing plate elastic connection, the upper mold base is equipped with a pair of air springs, the upper clamping plate, lower clamping plate is equipped with air spring through hole in sequence, the air spring passes through spring through hole and the upper pressing plate elastic abutment, the punch structure is installed on the upper pressing plate, the upper mold base is also equipped with the ejector pin, the ejector pin upper end passes through ejector pin spring and the upper pressing plate elastic abutment, the upper clamping plate, lower clamping plate, template are equipped with ejector pin spring through hole in sequence, the ejector pin passes through ejector pin spring through hole and the mobile block of punch structure elastic abutment, the upper clamping plate is equipped with a pair of punch seat, the punch seat is equipped with punch in, the lower clamping plate is equipped with punch through hole, and the upper pressing plate is equipped with the punch through hole of the mobile block.

[0009] Further preferred technical solutions also have, the upper mold base, upper clamping plate, lower clamping plate and the periphery of the upper pressing plate are also equipped with a group of auxiliary group support devices, the auxiliary group support device includes U-shaped connecting block, the U-shaped connecting block is clamped in the periphery of the upper mold base, upper clamping plate, lower clamping plate and the upper pressing plate, the upper end of the U-shaped connecting block is clamped in the top of the upper mold base, and the lower end of the U-shaped connecting block is clamped in the bottom of the upper pressing plate, so that the upper pressing plate is suspended on a group of U-shaped connecting blocks.

[0010] Further preferred technical solutions also have, the periphery of the upper mold base, upper clamping plate, lower clamping plate is equipped with clamping groove and the U-shaped connecting block cooperation, the U-shaped connecting block is fixedly connected with the lower clamping plate by screw, each U-shaped connecting block is also equipped with a waist hole, and the upper pressing plate is also equipped with a pin shaft and the waist hole sliding cooperation.

[0011] The utility model discloses an advantage and beneficial effect lie in: the inclined plane cavity on the swing block changes from the inclined structure to the vertical structure, and then restores to the inclined structure again, when the mold is closed, the inclined plane cavity extrudes the workpiece outside into the vertical structure, when the mold is opened, the inclined plane cavity is separated from the workpiece outside, avoids the scratch produced in the workpiece's material withdrawal process with the inclined plane cavity friction, and the swing block and the lower mold are detachably connected, when stamping a certain number of times, the cavity of the swing block becomes rough, when the work requirement can not be met, the swing block can be replaced, so as to guarantee the surface quality of workpiece. ACCURACY OF DRAWINGS

[0012] The utility model makes further explanation in combination with the drawings.

[0013] Figure 1 It is the perspective drawing of the utility model;

[0014] Figure 2is the sectional view of the utility model;

[0015] Figure 3 is the explosion view of the upper die of the utility model;

[0016] Figure 4 is the explosion view of the lower die of the utility model;

[0017] Figure 5 is the perspective view of the swing block of the utility model;

[0018] Figure 6 is the punch via hole formed by the upper pressing plate and the moving block of the utility model;

[0019] Figure 7 is the axonometric view of the original bending die;

[0020] Figure 8 is the internal cross-section schematic view of the original bending die;

[0021] Figure 9 is the explosion view of the upper die of the original bending die;

[0022] Figure 10 is the explosion view of the lower die of the original bending die;

[0023] In the drawing: 1, upper die; 1a, upper die holder; 1b, upper clamping plate; 1c, lower clamping plate; 2, lower die; 3, punch structure; 4, fixed block; 5, moving block; 6, sliding inclined surface; 7, ejector pin; 8, part positioning groove; 9, die block; 10, lower groove; 11, forming side wall; 12, guide groove; 13, matching inclined surface; 14, guide convex rib; 15, forming block; 16, through groove; 17, insertion block; 18, compression bolt; 19, upper pressing plate; 20, push hole; 21, accommodating groove; 22, push chamber; 23, end positioning plate; 24, positioning notch; 25, cavity; 26, inclined surface cavity; 27, vertical cavity; 28, roller shaft; 29, shaft hole; 30, fan-shaped cavity; 31, roller; 32, workpiece; 33, swing block; 34, U-shaped connecting block; 35, waist-shaped hole; 36, pin shaft; 37, nitrogen gas spring; 38, punch via hole; 39, mounting plate; 40, positioning block; 41, elastic push rod; 42, circular arc hole. DETAILED DESCRIPTION

[0024] The specific embodiments of the utility model are further described below in combination with the drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the utility model, and cannot limit the protection scope of the utility model.

[0025] The existing bending die for processing mobile phone frame has the problems of low efficiency, high cost, and low quality, etc. Figures 7-10As shown, including the upper die 1, lower die 2; when the mold is closed, the upper die 1 is punched into the lower die 2, and then the workpiece 32 placed between the two dies is bent according to the cavity 25 when the mold is closed. The lower side of the upper die 1 is provided with a punch structure 3, and the lower die 2 is provided with a lower groove 10 corresponding to the punch structure 3. The punch is inserted into the lower groove 10, so that the two ends of the workpiece 32 are bent on the forming side wall 11 on both sides of the lower groove 10. The punch structure 3 includes a fixed block 4 and a moving block 5. The moving block 5 is slidably connected to the both sides of the fixed block 4. A sliding slope 6 is arranged between the moving block 5 and the fixed block 4. The middle of the sliding slope 6 is provided with a guide groove 12. The side of the moving block 5 abutting the sliding slope 6 is provided with a matching slope 13. The middle of the matching slope 13 is provided with a guide convex rib 14. The guide convex rib 14 is slidably arranged in the guide groove 12. The moving block 5 slides relative to the fixed block 4 according to the guide direction of the sliding slope 6, so that the punch structure 3 expands or shrinks in the transverse direction. When actually used, under the pressure of the upper pressing plate 19, the fixed block 4 and the moving block 5 press on the upper surface of the workpiece 32 to form it. The upper die 1 is also provided with a ejector pin 7 for moving the moving block 5 downward. When the mold is opened, the upper end of the ejector pin 7 is first stressed to support the moving block 5. At this time, the upper die 1 is controlled to move upward. Then, under the action of the ejector pin 7, the fixed block 4 is first lifted by a certain distance, so that the relative movement of the sliding slope 6 and the matching slope 13 causes the moving blocks 5 on both sides to move closer to each other, thereby increasing the distance between the moving blocks 5 and the workpiece 32. Then, as the upper die 1 is lifted, the moving blocks 5 on both sides are pulled out. The lower end of the moving block 5 is provided with a detachable and replaceable forming block 15. The forming block 15 is the most easily worn part during long-term use. It is designed to be easily replaced. In addition, since the frame bending jig has different curvature requirements at the bending part, the device can process workpieces 32 with different curvatures by using forming blocks 15 with different curvatures. Figure 4 As shown, the plug 17 of the forming block 15 is inserted into the through groove 16, and then the forming block 15 is fixed by using the clamping screw 18 on both sides.

[0026] The lower mold 2 is provided with a part positioning groove 8, which includes a mold block 9 arranged in the middle and controlled in lifting relative to the lower mold 2; before processing the workpiece 32, the mold block 9 is controlled to move upwards, the mold block 9 and the end positioning plates 23 arranged at both ends can form the part positioning groove 8 for positioning the workpiece 32, and the workpiece 32 can be positioned by being placed in the part positioning groove 8; the end positioning plates 23 are provided with positioning notches 24, which facilitate limiting the end of the workpiece 32, the lower mold 2 is provided with a lower groove 10 in the middle of the upper side, the lower groove 10 is provided with forming side walls 11 for bending processing of the workpiece 32 at both sides, the forming side walls 11 of the lower groove 10 are provided with a cavity 25 for forming the workpiece 32, and the cavity 25 includes an inclined cavity 26 and a vertical cavity 27; the lower groove 10 is internally recessed to be provided with a containing groove 21 for the mold block 9 to move up and down, and the containing groove 21 is internally provided with a pushing chamber 22 for placing a top lifting cylinder.

[0027] As Figures 1-6As shown, the cavity 25 of the lower die of the existing bending die includes an inclined cavity 26 and a vertical cavity 27, although a roller 28 is arranged at the joint between the inclined cavity 26 and the vertical cavity 27 to change sliding friction into rolling friction, thereby better protecting the surface of the workpiece 32, but in the process of opening the mold, since the workpiece is deformed in the bending process, the workpiece is in close contact with the vertical cavity 27, when the jacking cylinder pushes the workpiece 32 out of the vertical cavity of the cavity 25, the contact surface of the workpiece 32 and the vertical cavity 27 will still rub, causing scratches and surface quality defects, and since the cavity 25 is arranged on the body of the lower die 2, after multiple stamping, the surface quality of the cavity 25 deteriorates, causing more scratches on the workpiece 32, the more the stamping times, the more the surface of the cavity 25 is worn, the worse the surface quality of the workpiece 32, in order to improve this situation, the mobile phone frame bending continuous die of the application is provided with a pair of detachable swing blocks 33 at the bottom of the lower groove 10, the swing blocks 33 are symmetrically arranged in the lower groove 10, the inner side of each swing block 33 is an L-shaped forming side wall 11, the bottom of the outer side of each swing block 33 has a circular arc shaft part, the two corners of the inner bottom of the lower groove 10 are provided with circular arc holes 42 penetrating through the front and back of the lower die 2, the circular arc shaft part of each swing block 33 can be inserted into the circular arc hole 42 to form a rotating fit, so that the swing block 33 can swing within a certain angle around the axis of the circular arc shaft part under the action of an external force in the lower groove 10, the inner side of each swing block 33 is further provided with a cavity 25, the cavity 25 is provided with an inclined cavity 26, the bottom of the lower groove 10 is provided with a push rod hole on the corresponding lower die 2, the push rod hole is provided with an elastic push rod 41 elastically abutting against the bottom surface of the swing block 33, before closing the mold, the swing block 33 is driven by the elastic push rod 41, the outer side of the swing block 33 is attached to the vertical side of the lower groove 10, when closing the mold, the punch structure 3 is pressed down, the workpiece 32 enters the cavity 25 of the swing block 33 to be bent and formed, at the same time, the swing block 33 rotates around the axis of the circular arc shaft part under the action of the pressure, so that the outer side of the swing block 33 is away from the vertical side of the lower groove 10, at the same time, the bottom surface of the swing block 33 is attached to the bottom surface of the lower groove 10 to form a rigid contact, so that the workpiece 32 is completely bent, then the mold is opened, when opening the mold, the swing block 33 rotates around the axis of the circular arc shaft part to recover to the original state under the action of the elastic push rod 41, in the process of swinging of the swing block 33, the inclined cavity 26 on the swing block 33 changes from an inclined structure to a vertical structure, and then changes from the vertical structure to the inclined structure, so that when closing the mold again, the inclined cavity 26 extrudes the outer side of the workpiece 32 into a vertical structure, when opening the mold again, the inclined cavity 26 is separated from the outer side of the workpiece 32 to avoid scratches caused by friction between the workpiece 32 and the inclined cavity 26 in the process of withdrawing the workpiece 32, and the swing block 33 and the lower die 2 are detachably connected, when stamping a certain number of times,When the cavity 25 of the swing block 33 becomes too rough to meet the work requirement, the swing block 33 can be replaced, thereby ensuring the surface quality of the workpiece.

[0028] To prevent the workpiece 32 from being scratched by sliding friction with the cavity 25 during mold closing, a roller shaft 28 is arranged on the swing block 33, penetrates the swing block 33 along the front-rear direction of the swing block 33 and is partially exposed in the cavity 25. When the workpiece 32 is deformed, the roller shaft 28 changes the sliding friction into rolling friction, thereby better protecting the surface of the workpiece 32 and making the bending more easily and effectively improving the processing quality.

[0029] The swing block is provided with a shaft hole 29 through which the roller shaft 28 penetrates. The shaft hole 29 is connected with a fan-shaped cavity 30 at the lower part of the side away from the lower groove 10. A plurality of rollers 31 are arranged in the fan-shaped cavity 30 and are arranged in parallel with the roller shaft 28. To make the roller shaft 28 more easily rotate in the shaft hole 29, a plurality of rollers 31 are arranged to change the sliding friction between the roller shaft 28 and the inner wall of the shaft hole 29 into rolling friction, thereby reducing the contact area and making the roller shaft 28 more easily rotate.

[0030] As shown in FIG. 1, the swing block 33 is arranged in the lower groove 10 of the mold 1. The swing block 33 is provided with a cavity 25 for receiving the workpiece 32. The workpiece 32 is arranged in the cavity 25 and is deformed by the mold 1. Figures 1-6As shown, the existing mold's part positioning groove 8 includes end positioning plates 23, each with a corresponding end positioning plate 23 on both sides of the lower groove 10. These two end positioning plates 23 are used to position the ends of the placed workpiece 32. The two end positioning plates 23 have positioning notches 24 on their adjacent sides. Before stamping, the workpiece 32 is in a straight line shape, allowing both ends of the workpiece 32 to be positioned within the positioning notches 24 of the end positioning plates 23. However, because the end positioning plates 23 are fixed structures, the distance between the two positioning notches 24 is fixed. When the length of the workpiece 32 is not precisely controlled, the workpiece 32 may not be able to fit into the two positioning notches 24, or the two positioning notches 24 may become loose and jump during stamping, affecting stamping accuracy. Furthermore, the end positioning plates 23 will wear down after multiple stampings, causing the two positioning notches to become worn. As the distance between 24 increases, the positioning accuracy decreases. Therefore, the end positioning plate 23 and the positioning notch 24 are designed as detachable structures. One of the end positioning plates 23 is provided with a mounting groove, and the mounting groove is provided with a detachable mounting plate 39. The mounting plate 39 is provided with a positioning notch 24. The mounting plate 39 is installed on the end positioning plate 23 by screws. The other end positioning plate 23 is also provided with an opening groove, and a detachable positioning block 40 is provided inside the opening groove. The bottom of the opening groove is provided with a stepped slot. The bottom of the positioning block 40 is provided with a stepped insert that slides with the stepped slot. The inner side of the positioning block 40 and the corresponding side of the opening groove are provided with positioning springs. In this way, the workpiece 32 can be elastically clamped between the positioning block 40 and the positioning notch 24 to ensure positioning accuracy.

[0031] like Figures 1-6 As shown, the existing mold only bends the workpiece 32. After bending, the end faces of both ends of the workpiece 32 need to be flattened, resulting in a complex process and low efficiency. To improve efficiency, the mold is designed as a continuous stamping mold. The mold first performs bending and then flattens the end faces. Specifically, the upper mold 1 includes an upper mold base 1a, an upper clamping plate 1b, a lower clamping plate 1c, and an upper pressure plate 19 arranged from top to bottom. The upper mold base 1a, upper clamping plate 1b, and lower clamping plate 1c are fixedly connected, and the upper mold base 1a, upper clamping plate 1b, and lower clamping plate 1c are elastically connected to the upper pressure plate 19. The upper mold base 1a is provided with a pair of air springs 37. The upper clamping plate 1b and the lower clamping plate 1c are provided with air spring through holes in sequence. The air springs 37 pass through the air spring through holes and elastically abut against the upper pressure plate 19. The punch structure 3 is installed on the upper pressure plate 19. The upper mold base 1a is also provided with two pairs of ejector pins 7. The upper end of the ejector pin 7 elastically abuts against the upper pressure plate 19 through ejector pin springs. The upper clamping plate 1b, the lower clamping plate 1c, and the upper pressure plate 19 are provided with ejector pin spring through holes in sequence. The ejector pins 7 pass through the ejector pin spring through holes and elastically abut against the moving block 5 of the punch structure 3.

[0032] The upper clamp plate 1b is provided with a pair of punch seats, the punch seats are provided with punches, the lower clamp plate 1c is provided with punch through holes 38, and the upper pressing plate 19 and the moving block 5 are provided with matched punch through holes 38.

[0033] The upper die seat 1a, the upper clamp plate 1b, the lower clamp plate 1c and the periphery of the upper pressing plate 19 are further provided with a group of auxiliary support devices, the auxiliary support devices include U-shaped connecting blocks 34, the U-shaped connecting blocks 34 are clamped on the periphery of the upper die seat 1a, the upper clamp plate 1b, the lower clamp plate 1c and the upper pressing plate 19, the upper ends of the U-shaped connecting blocks 34 are clamped on the top of the upper die seat 1a, the lower ends of the U-shaped connecting blocks 34 are clamped on the bottom of the upper pressing plate 19, the upper pressing plate 19 is suspended on the group of U-shaped connecting blocks 34, the periphery of the upper die seat 1a, the upper clamp plate 1b and the lower clamp plate 1c is provided with clamping grooves matched with the U-shaped connecting blocks 34, the U-shaped connecting blocks 34 are fixedly connected with the lower clamp plate 1c through screws, each U-shaped connecting block 34 is further provided with a waist-shaped hole 35, and the upper pressing plate 19 is further provided with a pin shaft 36 in sliding fit with the waist-shaped hole 35. In work, the upper die 1 is lowered as a whole to bend the workpiece 32, until the upper pressing plate 19 is in rigid contact with the lower die 2 through the limiting block on the guide column, then the upper die seat 1a, the upper clamp plate 1b and the lower clamp plate 1c continue to move downwards relative to the upper pressing plate 19 while overcoming the spring force, and the pin shaft 36 moves along the waist-shaped hole 35 to push the punch to pass through the lower clamp plate 1c to the punch through hole 38 matched with the moving block 5 in the upper pressing plate 19 to flatten the end face.

[0034] The above only describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A mobile phone frame bending continuous die, comprising an upper die and a lower die, the lower side of the upper die is provided with a punch structure, the punch structure comprises a fixed block and a moving block, a sliding inclined surface is arranged between the moving block and the fixed block, the outer side of the lower end of the moving block is provided with a detachable and replaceable forming block, a ejector pin for pushing the moving block downward is further arranged in the upper die, a lower groove is arranged in the middle of the lower die, forming side walls are arranged on both sides of the lower groove, a cavity for forming a workpiece is arranged on the forming side walls of the lower groove, a containing groove for the upward and downward movement of the die block is arranged in the inside of the lower groove, a pushing chamber for placing a lifting cylinder is arranged at the bottom of the containing groove, a part positioning groove is further arranged on the lower die, the part positioning groove is composed of a die block arranged in the containing groove and end face positioning plates arranged at both ends, characterized in that: The bottom of the lower groove is provided with a pair of detachable swing blocks, the bottom of the outer side surface of each swing block is provided with a circular arc shaft part, the inner bottom of the lower groove is provided with a circular arc hole penetrating through the front and back of the lower mold, the circular arc shaft part of each swing block is inserted into the circular arc hole to form a rotating fit, the inner side surface of each swing block is provided with the cavity, the bottom of the lower groove is provided with a push rod hole corresponding to the lower mold, the push rod hole is provided with an elastic push rod elastically abutting against the swing block.

2. The continuous die for bending the cell phone frame according to claim 1, wherein: A roller shaft is arranged on the swing block, the roller shaft penetrates through the swing block in the front and back direction of the swing block and is partially exposed in the cavity.

3. The continuous bending die for the cell phone frame according to claim 2, characterized in that: The swing block is provided with an axle hole through which the roller shaft penetrates, a fan-shaped cavity is connected to the lower part of the side of the axle hole away from the lower groove, a plurality of rollers are arranged in the fan-shaped cavity and are arranged in parallel with the roller shaft.

4. The continuous bending die for the cell phone frame according to claim 1, wherein: The part positioning groove comprises two end positioning plates, one of the end positioning plates is provided with a mounting groove, the mounting groove is provided with a detachable mounting plate, the mounting plate is provided with a positioning notch, the mounting plate is mounted on the end positioning plate by screws, the other end positioning plate is provided with an open groove, the open groove is provided with a detachable positioning block, the bottom of the open groove is provided with a stepped insertion slot, the bottom of the positioning block is provided with a stepped insertion block which is in sliding fit with the stepped insertion slot, the inner side surface of the positioning block and the corresponding side surface of the open groove are provided with a positioning spring.

5. The continuous bending die for the cell phone frame according to any one of claims 1-4, characterized in that: The upper mold comprises an upper mold base, an upper clamping plate, a lower clamping plate and an upper pressing plate arranged from top to bottom, the upper mold base, the upper clamping plate and the lower clamping plate are fixedly connected, the upper mold base, the upper clamping plate and the lower clamping plate are elastically connected with the upper pressing plate, the upper mold base is provided with a pair of air springs, the upper clamping plate and the lower clamping plate are sequentially provided with air spring through holes, the air springs pass through the air spring through holes and elastically abut against the upper pressing plate, the punch structure is mounted on the upper pressing plate, the upper mold base is further provided with the ejector pin, the upper end of the ejector pin elastically abuts against the upper pressing plate through an ejector pin spring, the upper clamping plate, the lower clamping plate and the mold plate are sequentially provided with ejector pin spring through holes, the ejector pin passes through the ejector pin spring through holes and elastically abuts against the moving block of the punch structure, the upper clamping plate is provided with a pair of punch seats, the punch seats are provided with punches, the lower clamping plate is provided with a punch through hole, the upper pressing plate and the moving block are provided with a pair of punch driving through holes.

6. The continuous bending die for the cell phone frame according to claim 5, characterized in that: The periphery of the upper mold base, the upper clamping plate, the lower clamping plate and the upper pressing plate is further provided with a group of auxiliary support devices, the auxiliary support devices comprise U-shaped connecting blocks, the U-shaped connecting blocks are clamped on the periphery of the upper mold base, the upper clamping plate, the lower clamping plate and the upper pressing plate, the upper end of the U-shaped connecting block is clamped on the top of the upper mold base, the lower end of the U-shaped connecting block is clamped on the bottom of the upper pressing plate, so that the upper pressing plate is suspended on a group of U-shaped connecting blocks.

7. The continuous bending die for a cell phone frame according to claim 6, wherein: The periphery of the upper mold base, the upper clamping plate and the lower clamping plate is provided with a clamping groove matched with the U-shaped connecting block, the U-shaped connecting block is fixedly connected with the lower clamping plate by screws, each U-shaped connecting block is further provided with a waist-shaped hole, and the upper pressing plate is further provided with a pin shaft in sliding fit with the waist-shaped hole.

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