Positioning and guiding structure for bending die

Abstract

The utility model belongs to the field of die structures, and discloses a positioning and guiding structure for a bending die, which comprises an upper die plate and a lower die plate, the elastic pressing assembly is mounted at the bottom of the upper die plate; a fixed plate is mounted at the top of the lower template; the female die is fixed on the fixed plate; the movable guide material supporting unit is mounted on the lower die plate; and the positioning guide block is installed on the fixing plate and provided with a positioning end and a sliding guide end which are adjacent to each other, and the distance between the sliding guide end and the female die is larger than that between the positioning end and the female die. The positioning end and the sliding guide end are used in cooperation with the movable guide material supporting unit, so that when a blank is placed on a station, the blank can be guided and limited by the sliding guide end and the movable guide material supporting unit, and the blank cannot move left and right; the front end and the rear end of the blank placed on the fixing plate can be limited by the positioning ends on the two sides and cannot move front and back, so that the position precision of the blank during bending and stamping is guaranteed, and the forming precision of a workpiece is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to die structure technical field, concretely relates to a positioning guide structure for bending die. BACKGROUND

[0002] Bending die refers to the die that blanks or semi-finished products are bent into a certain shape. In the stamping process, the bending die makes the blank bend along a straight line (bending line) to obtain the required shape and angle.

[0003] In the related prior art, for example, a Chinese patent with publication number CN222242045U discloses an active positioning and material supporting structure in a bending die, which is composed of a material supporting positioning block with an irregular polygonal longitudinal section, a shaft in the middle, a limiting pin below the material supporting positioning block, and a material supporting block support. It is located on the opposite side of the bending concave die of the lower die. The material supporting block support is fixed on the lower die plate. The material supporting positioning block includes a material supporting block main body and a horizontal extension. The front end of the horizontal extension is a material supporting end with a notch. The material supporting positioning block is connected to the material supporting block support through the shaft. When the die is opened, the material supporting positioning block is limited by the limiting pin. One side of the metal profile is placed on the upper surface of the bending concave die, and the other side is placed in the notch of the material supporting end of the material supporting positioning block. The limiting pin and the shaft structure avoid the interference between the bending punch and the material supporting structure. The shape design of the material supporting positioning block increases the stability of the metal plate placement, which is beneficial to improving the dimensional accuracy of the metal plate.

[0004] However, in actual use, the plate is only limited by the limiting pin when placed in the work station, and when the die is shaken, shaken or pressed by the pressure plate (the pressure plate is not limited by the guide), the plate placed in the work station may move in other directions. At this time, the theoretical bending point does not match the actual bending point when the plate is fixed by the pressure plate, which may cause the product to be scrapped. In summary, the above-mentioned scheme has poor positioning effect on the plate, which may cause large deviation of the processed product, and is not conducive to actual use. UTILITY MODEL CONTENTS

[0005] The utility model intends to provide a positioning guide structure for bending die to solve the problem of poor positioning effect of the existing bending die on the blank mentioned above.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a positioning guide structure for bending die, comprising

[0007] The upper die plate is provided with a die at the bottom;

[0008] The elastic pressing assembly is installed at the bottom of the upper die plate and is used for elastically pressing the blank;

[0009] The lower die plate is provided with a fixed plate at the top;

[0010] The fixed plate is fixed on the base plate, and the concave die is fixed on the fixed plate;

[0011] The movable guide material supporting unit is installed on the lower die plate, and is used for guiding and supporting the blank beyond the concave die;

[0012] The positioning guide block is installed on the fixed plate, and has an adjacent positioning end and a guide sliding end, and the distance between the guide sliding end and the concave die is greater than the distance between the positioning end and the concave die.

[0013] Principles and effects of the technical scheme:

[0014] 1. By providing the positioning guide block with the positioning end and the guide sliding end, and cooperating with the use of the movable guide material supporting unit, when the blank is placed on the work station, the two ends of the blank can be guided and limited by the guide sliding end and the movable guide material supporting unit, so that the blank cannot move left and right when placed on the work station, and by providing the positioning end, the front and rear ends of the blank placed on the fixed plate can be limited by the positioning ends on both sides and cannot move forward and backward, so as to ensure the position accuracy of the blank during bending stamping, and to ensure the forming accuracy of the workpiece.

[0015] 2. By making the distance between the positioning end and the concave die smaller than the distance between the guide sliding end and the concave die, so that after the blank is completely placed on the work station, the blank still abuts against the positioning end at this time, to ensure the limiting effect of the positioning end on the blank.

[0016] 3. By driving the upper die plate to press down the punch, the elastic pressing assembly first presses against the blank, so that the fixed end of the blank will not be lifted up due to the pressing of the punch, and by stamping the blank with the punch, the blank can finally be bent and formed on the concave die.

[0017] The utility model further sets up: still include adjusting assembly, the positioning guide block still have activity end, activity end be located positioning end and guide sliding end below, the fixed plate is set up with activity groove, activity end is slidably fitted in activity groove, adjusting assembly is installed on the side of fixed plate away from concave die, adjusting assembly is used for controlling the position of activity end in activity groove.

[0018] Principles and effects of the technical scheme: by adjusting assembly control activity end in activity groove movement, make the distance of positioning guide block relative to concave die can be adjusted according to the length of blank, to play the function of adapting to the positioning guide of a plurality of different length blanks, improve the scope of application.

[0019] The utility model further sets up: adjusting assembly includes adjusting bolt, control board and control lever, adjusting bolt rotation is installed on the side wall of fixed plate, control board is screwed on adjusting bolt, one end of control lever is connected with control board, the other end of control board extends into activity groove, and is connected with activity end.

[0020] The principle and effects of the technical scheme are as follows: through the setting of the adjusting bolt, the control plate and the control rod, the rotation of the adjusting bolt can drive the control plate to move close to or away from the fixed plate, and through the transmission of the control rod to the movement of the control plate, the movable end of the positioning guide block can move synchronously with the movement of the control plate, so that the distance between the positioning guide block and the concave die is changed, and thus the position of the positioning guide block can be adjusted according to the length of the blank, thereby achieving the function of positioning and guiding the blanks of various lengths and improving the application range.

[0021] The utility model further sets up: movable guide material supporting unit includes guide plate, material supporting plate, limit axle, float material pin and float material spring, the guide plate is installed on the lower die plate, is set with the let -by slot on the guide plate, the cross section of material supporting plate is L -shaped, one end of material supporting plate is rotatably installed in the let -by slot, limit axle is fixed in the let -by slot, and it is located at the side of material supporting plate close to the concave die, the guide plate has movable cavity, float material pin is slidably installed in movable cavity, the end of float material pin extends to let -by slot, and with the side of material supporting plate away from limit axle abuts, float material spring is installed in movable cavity, and it is located below float material pin.

[0022] The principle and effects of the technical scheme are as follows: the setting of the float material pin and the float material spring makes the material supporting plate rotate towards the side of the limit axle and abut against the limit axle, at this time, one end of the material supporting plate is in a horizontal state, at this time, the blank beyond the concave die can be abutted and supported, and when the blank is bent by the punch, the rotating force of the blank is transmitted to the material supporting plate, so that the material supporting plate rotates around the rotating end, at this time, the material supporting plate abuts against the float material pin, so that the float material pin gives way to the material supporting plate, and after the blank is separated from the material supporting plate, the material supporting plate is reset spontaneously under the action of the float material spring.

[0023] The utility model further sets up: still include control assembly, control assembly includes control screw, carousel and control block, the control groove is seted up on the lower die plate, control screw rotatably installs in control groove, one end of control screw extends to the outside of lower die plate, and is connected with carousel, control block is slidably fitted in control groove, and control block is screwed on control screw, and the guide plate is fixed on the control block.

[0024] The principle and effects of the technical scheme are as follows: through the rotation of the carousel to drive the control screw, the control screw can drive the control block to slide in the control groove, so as to change the distance between the movable guide material supporting unit and the concave die, so that the movable guide material supporting unit can support the blanks of different lengths, thereby improving the application range of the device.

[0025] The utility model further sets up: the elastic pressure subassembly includes elastic pressure board, hang and install bolt and elastic pressure spring, the upper die plate is set with counterbore, hang and install bolt is slidably inserted in the counterbore, and the end of hang and install bolt is connected with elastic pressure board, and elastic pressure board is located below the upper die plate, and elastic pressure spring is sleeved on hang and install bolt, and elastic pressure spring is located between elastic pressure board and upper die plate, and the elastic pressure board is set with the hole for giving place, and the hole for giving place position corresponds with the positioning guide block.

[0026] The principle and effect of the technical scheme are as follows: through the setting of the hang and install bolt, the elastic pressure spring and the elastic pressure board, the elastic pressure board has a tendency to spontaneously move away from the upper die plate under the rebound force of the elastic pressure spring, and then when the elastic pressure board is not pressed against the blank, the upper die plate can drive the elastic pressure board to synchronously descend, and after the elastic pressure board is pressed against the blank, the upper die plate can continue to drive the punch downward by compressing the elastic pressure spring, so that the punch bends the compressed blank, and the setting of the hole for giving place avoids the interference of the positioning guide block on the elastic pressure board.

[0027] The utility model further sets up: the fixed plate is set with the notch near the punch side, and the die is installed on the notch, and the surface of the die is flush with the surface of the fixed plate.

[0028] The principle and effect of the technical scheme are as follows: through the installation of the die on the notch of the fixed plate, the die is easy to keep flush with the surface of the fixed plate, and the volume of the die can be saved, the size of the die is reduced, and the cost is saved (the die material is higher in strength and more expensive than the fixed plate), and the die is easy to replace by being disassembled. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the front view of the utility model;

[0030] Figure 2 It is the fixed plate in the utility model; Figure 1 It is the enlarged view of the axial structure of the fixed plate;

[0031] Figure 3 It is the structure diagram of the adjusting assembly in the utility model; Figure 2 It is the structure diagram of the adjusting assembly in the utility model;

[0032] Figure 4 It is the axial structure enlarged view of the guide plate in the utility model; Figure 1 It is the axial structure enlarged view of the guide plate in the utility model;

[0033] Figure 5 It is the state diagram of the blank after bending in the utility model. DETAILED DESCRIPTION

[0034] The utility model will be further explained in detail in combination with the drawings and embodiments:

[0035] The reference signs in the drawings of the specification include:

[0036] 110, upper die plate; 111, counterbore; 120, punch;

[0037] 210, lower die plate; 211, control groove;

[0038] 310, fixed plate; 311, movable groove; 312, notch; 320, concave die;

[0039] 410, positioning guide block; 411, positioning end; 412, guide sliding end; 413, movable end;

[0040] 510, adjusting bolt; 520, control plate; 530, control rod;

[0041] 610, guide plate; 611, clearance groove; 612, movable cavity; 620, material supporting plate; 630, limiting shaft; 640, floating material pin; 650, floating material spring;

[0042] 710, rotary disc; 720, control screw; 730, control block;

[0043] 810, elastic pressing plate; 811, clearance hole; 820, hanging bolt; 830, elastic pressing spring;

[0044] 910, blank.

[0045] Embodiment:

[0046] As shown in the accompanying drawings Figures 1-5 The utility model discloses a positioning guide structure for bending die, including upper die plate 110, elastic pressing assembly, lower die plate 210, concave die 320, movable guide material supporting unit, positioning guide block 410, adjusting assembly and control assembly, upper die plate 110 installs on movable end 413 of machine tool hydraulic cylinder, and the bottom of upper die plate 110 is installed with punch 120;

[0047] Elastic pressing assembly includes elastic pressing plate 810, hanging bolt 820 and elastic pressing spring 830, and the upper die plate 110 is set with counterbore 111, and the hanging bolt 820 is slidably inserted in the counterbore 111, and the end of hanging bolt 820 is connected with elastic pressing plate 810, and the elastic pressing plate 810 is below the upper die plate 110, and the elastic pressing spring 830 is sleeved on the hanging bolt 820, and the elastic pressing spring 830 is between the elastic pressing plate 810 and the upper die plate 110, and the elastic pressing plate 810 is set with clearance hole 811, and the clearance hole 811 position corresponds with positioning guide block 410, and the size of clearance hole 811 is greater than the size of movable groove 311, and when the elastic pressing plate 810 does not abut with blank 910, the bottom surface of elastic pressing plate 810 is lower than the bottom surface of punch 120.

[0048] The lower die plate 210 is mounted on the worktable of the machine tool, and a fixed plate 310 is mounted on the top of the lower die plate 210. The fixed plate 310 is provided with a notch 312 on the side close to the punch 120, and a concave die 320 is mounted in the notch 312 through a pin and a bolt. The concave die 320 is matched with the punch 120, and the surface of the concave die 320 is flush with the surface of the fixed plate 310.

[0049] The movable guide and material supporting unit is provided with multiple groups and is uniformly distributed along the lower die plate 210 (specifically, two groups, and the positions correspond to the positioning guide blocks 410). The movable guide and material supporting unit comprises a guide plate 610, a material supporting plate 620, a limiting shaft 630, a floating material pin 640 and a floating material spring 650. The guide plate 610 is mounted on the lower die plate 210, and the top of the side close to the concave die 320 of the guide plate 610 has a guide sliding surface. A clearance slot 611 is formed in the middle of the upper end of the guide plate 610. The cross section of the material supporting plate 620 is L-shaped. One end of the material supporting plate 620 is rotatably mounted in the clearance slot 611. The limiting shaft 630 is fixed in the clearance slot 611 and located on the side of the material supporting plate 620 close to the concave die 320. The guide plate 610 has a movable cavity 612. The floating material pin 640 is slidably mounted in the movable cavity 612. The end of the floating material pin 640 extends into the clearance slot 611 and abuts against the side of the material supporting plate 620 away from the limiting shaft 630. The floating material spring 650 is mounted in the movable cavity 612 and located below the floating material pin 640.

[0050] The positioning guide block 410 is provided with two blocks and is symmetrically arranged about the fixed plate 310 (as shown in Figure 2 The positioning guide block 410 is mounted on the fixed plate 310. The positioning guide block 410 has a positioning end 411 and a guide sliding end 412 which are perpendicular to each other. The guide sliding end 412 has a guide sliding surface. The direction of the guide sliding surface of the guide sliding end 412 is opposite to the guide sliding surface of the guide plate 610 and corresponds in position. The positioning guide block 410 further has a movable end 413 which is located below the positioning end 411 and the guide sliding end 412. The distance between the guide sliding end 412 and the concave die 320 is greater than the distance between the positioning end 411 and the concave die 320.

[0051] An active slot 311 is formed in the fixed plate 310, and the movable end 413 is slidably fitted in the active slot 311. The adjusting assembly comprises an adjusting bolt 510, a control plate 520 and a control rod 530. The adjusting bolt 510 is rotatably mounted on the side wall of the fixed plate 310. The control plate 520 is threadedly sleeved on the adjusting bolt 510. One end of the control rod 530 is connected with the control plate 520, and the other end of the control plate 520 extends into the active slot 311 and is connected with the movable end 413. The number of the control rod 530 corresponds to the number of the positioning guide blocks 410.

[0052] The control assembly comprises a control screw 720, a rotating disc 710 and a control block 730, the lower mold plate 210 is provided with a control groove 211, the control screw 720 is rotatably installed in the control groove 211, one end of the control screw 720 extends out of the lower mold plate 210 and is connected with the rotating disc 710, the control block 730 is slidingly fitted in the control groove 211, and the control block 730 is threadedly sleeved on the control screw 720, and the guide plate 610 is fixed on the control block 730.

[0053] The above is only the embodiment of the present application, and the well-known specific technical solutions or common knowledge in the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical scheme of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A positioning and guiding structure for a bending die, characterized in that: include The upper template has a punch die installed at the bottom; The spring-loaded assembly is installed at the bottom of the upper template and is used to elastically press against the billet; The lower template has a fixing plate installed at the top; The die is fixed to the fixed plate; A movable guide and support unit is installed on the lower template. The movable guide and support unit is used to guide and support the blank that extends beyond the die cavity. A positioning guide block is mounted on the fixed plate. The positioning guide block has an adjacent positioning end and a sliding end. The distance between the sliding end and the die cavity is greater than the distance between the positioning end and the die cavity.

2. The positioning and guiding structure for a bending die as described in claim 1, characterized in that: It also includes an adjustment component. The positioning guide block has a movable end located below the positioning end and the guide slide end. The fixed plate has a movable groove, and the movable end slides within the movable groove. The adjustment component is installed on the side of the fixed plate away from the die. The adjustment component is used to control the position of the movable end within the movable groove.

3. The positioning and guiding structure for a bending die as described in claim 2, characterized in that: The adjustment assembly includes an adjustment bolt, a control plate, and a control rod. The adjustment bolt is rotatably mounted on the side wall of the fixed plate. The control plate is threaded onto the adjustment bolt. One end of the control rod is connected to the control plate, and the other end of the control plate extends into the movable groove and is connected to the movable end.

4. The positioning and guiding structure for a bending die as described in claim 1, characterized in that: The movable guide material support unit includes a guide plate, a material support plate, a limiting shaft, a floating material pin, and a floating material spring. The guide plate is mounted on the lower template and has a clearance groove. The material support plate has an L-shaped cross-section, with one end rotatably mounted in the clearance groove. The limiting shaft is fixed in the clearance groove and located on the side of the material support plate closer to the die cavity. The guide plate has a movable cavity, and the floating material pin is slidably mounted in the movable cavity. The end of the floating material pin extends into the clearance groove and abuts against the side of the material support plate away from the limiting shaft. The floating material spring is mounted in the movable cavity and located below the floating material pin.

5. The positioning and guiding structure for a bending die as described in claim 4, characterized in that: It also includes a control assembly, which includes a control screw, a turntable, and a control block. A control groove is provided on the lower template. The control screw is rotatably installed in the control groove. One end of the control screw extends to the outside of the lower template and is connected to the turntable. The control block is slidably fitted in the control groove and is threaded onto the control screw. The guide plate is fixed to the control block.

6. The positioning and guiding structure for a bending die as described in claim 1, characterized in that: The spring-loaded assembly includes a spring-loaded plate, a mounting bolt, and a spring-loaded spring. The upper template has a countersunk hole, the mounting bolt is slidably inserted into the countersunk hole, and the end of the mounting bolt is connected to the spring-loaded plate. The spring-loaded plate is located below the upper template. The spring-loaded spring is fitted onto the mounting bolt and is located between the spring-loaded plate and the upper template. The spring-loaded plate has a clearance hole, the position of which corresponds to the positioning guide block.

7. The positioning and guiding structure for a bending die as described in claim 1, characterized in that: The fixing plate has a notch on the side near the punch, and the die is installed on the notch, with the surface of the die flush with the surface of the fixing plate.

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