Y-shaped pipe side trimming die and method

Abstract

The invention discloses a Y-shaped pipe side trimming die and method, and relates to the technical field of trimming dies, the Y-shaped pipe side trimming die comprises an upper die plate and a lower die plate, a guide piece, a limiting and fixing mechanism and side cutting mechanisms are installed between the upper die plate and the lower die plate, the limiting and fixing mechanism is installed in the middle, and the side cutting mechanisms are installed on the two sides of the limiting and fixing mechanism; the side cutting mechanism comprises a driving block installed on the upper die plate and a cutter assembly installed on the lower die plate, the movable end of the cutter assembly is close to or away from the limiting and fixing mechanism in the horizontal direction, multiple sets of cutter blocks are installed at the movable end of the cutter assembly, and the driving block is in sliding connection with the cutter assembly. According to the device, waste materials of multiple Y-shaped pipes can be cut off at a time through the side cutting mechanism, so that subsequent welding and splicing are facilitated, and the working efficiency is high.

Description

Technical Field

[0001] The invention belongs to the technical field of trimming dies, and in particular relates to a Y-shaped tube side trimming die and a method. Background Art

[0002] The Y-shaped pipe on the exhaust tail pipe is composed of upper and lower pieces welded together, and the gap between the upper and lower pieces is required to be within 0.05mm. The conventional process for the upper and lower pieces is to trim and then flanging. Since there is a difference in the length of the inner and outer surfaces of the product at the R angle, the end face of the product has an angle after flanging, resulting in a gap in the overlap, which can only be repaired by argon arc welding after adding wire. In the actual production process, the Y-shaped pipe products need to be manually added with wire welding. Because the thickness of the overlap position is less than 0.5mm, the welding position is easy to damage, the product quality is poor, and the rework rate is high, resulting in low production efficiency and high production cost.

[0003] Therefore, it is necessary to cut off the excess parts of the ends of the single and double Y-shaped tubes before welding. Summary of the invention

[0004] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a Y-shaped tube side trimming mold and method to solve the problems mentioned in the background technology.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A Y-shaped tube side trimming mold comprises an upper mold plate and a lower mold plate, wherein a guide, a limit fixing mechanism and a side cutting mechanism are installed between the upper mold plate and the lower mold plate, wherein the limit fixing mechanism is installed in the middle, and the side cutting mechanism is installed on both sides of the limit fixing mechanism; the side cutting mechanism comprises a driving block installed on the upper mold plate and a cutting knife assembly installed on the lower mold plate, wherein the movable end of the cutting knife assembly approaches or moves away from the limit fixing mechanism in the horizontal direction, and a plurality of sets of cutting knife blocks are installed on the movable end of the cutting knife assembly, and the driving block is slidably connected to the cutting knife assembly.

[0007] As a preferred technical solution, the cutter assembly includes a slider seat installed on both sides of the lower template, and sliders are slidably installed on the slider seat. One group of sliders is installed with a top knife block 1 and a bottom knife block 1 on the middle side, and the other group of sliders is installed with a top knife block 2 and a bottom knife block 2 on the middle side. The end of the slider away from the knife block is slidably connected to the cutting block.

[0008] As an optimal technical solution, bottom knife block one and bottom knife block two have the same shape and are relatively close or far apart. Bottom knife block one is F-shaped and has blade one on the handle and blade two on the end. The ends of bottom knife block one and bottom knife block two are in cross contact.

[0009] As a preferred technical solution, the driving block has an inclined surface near the middle that gradually approaches the limiting fixing mechanism from bottom to top, the end of the sliding block away from the knife block has an inclined surface parallel to the inclined surface of the driving block, and the two sets of inclined surfaces are slidably connected.

[0010] As a preferred technical solution, a limiting plate is fixedly installed on one end of the slider seat away from the limiting fixing mechanism, and the driving block is located between the limiting block and the slider.

[0011] As a preferred technical solution, an elastic member and a guide rod are installed between the slider and the sliding seat. The deformation direction of the elastic member is consistent with the length direction of the guide rod and the sliding direction of the slider. When the slider slides toward the middle, the elastic member is stretched.

[0012] As a preferred technical solution, the limit fixing mechanism includes an upper limit mechanism installed on the upper template and a lower limit mechanism installed on the lower template, and the upper limit mechanism and the lower limit mechanism are plugged into each other.

[0013] As a preferred technical solution, the upper limit mechanism includes an upper pressing plate installed on the upper template, and the upper pressing plate has a Y-shaped cavity on the side facing the lower template. The lower limit mechanism includes a Y-shaped model installed on the lower template, and the cavity and the model correspond.

[0014] As a preferred technical solution, the lower limit mechanism includes a lower fixed plate installed on the lower template, the model is installed on the lower fixed plate, and a lower knife groove for accommodating the movement of the knife block is horizontally penetrated through the lower fixed plate below the model.

[0015] A Y-shaped tube side trimming method, the steps are as follows:

[0016] S1: Clamp the half piece of Y-shaped tube from the previous process onto the model;

[0017] S2: Upper template presses down:

[0018] S21: The limit block fixes the three ends of the Y-shaped tube, the inner guide pin passes through the upper pressing plate and is inserted into the lower pad, and the cavity is close to the outer wall of the Y-shaped tube;

[0019] S22: The driving block pushes the slider to slide toward the middle along the slider seat, and the two groups of sliders push the top knife block 1, the top knife block 2, the bottom knife block 1 and the bottom knife block 2 to move toward the middle, the top knife block 1 and the top knife block 2 punch out the excess waste on both sides of the single Y-shaped tube, the blade 1 of the bottom knife block 1 and the bottom knife block 2 punch out the excess waste on the outer side of the double Y-shaped tube, and the blade 2 of the bottom knife block 1 and the bottom knife block 2 punch out the excess waste on the inner side of the double Y-shaped tube;

[0020] S3: The upper template rises, and the slider is reset to both sides under the action of the elastic member, thereby driving the knife block to reset.

[0021] Beneficial Effects

[0022] The device can cut off waste materials of multiple Y-shaped pipes at one time through the side cutting mechanism to facilitate subsequent welding and assembly, and has high work efficiency.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional structural diagram of a Y-shaped tube side trimming die proposed by the present invention;

[0025] Figure 2 A three-dimensional structural diagram of an upper mold plate of a Y-shaped tube side trimming mold proposed by the present invention;

[0026] Figure 3 A bottom view of an upper mold plate of a Y-shaped tube side trimming mold proposed by the present invention;

[0027] Figure 4 The three-dimensional structure of the lower mold plate of the Y-shaped tube side trimming mold proposed by the present invention Figure 1 ;

[0028] Figure 5 The three-dimensional structure of the lower mold plate of the Y-shaped tube side trimming mold proposed by the present invention Figure 2 ;

[0029] Figure 6 It is a right view of a lower mold plate of a Y-shaped tube side trimming mold proposed by the present invention;

[0030] Figure 7 for Figure 6 Cross-sectional view along AA direction;

[0031] Figure 8 It is a three-dimensional structural diagram of the Y-type tube;

[0032] Fig. 9 This is a schematic diagram of the bottom knife block cutting.

[0033] 1. The mold is molded in the following way: 1. The mold is molded in the following way: 2. The mold is molded in the following way: 3. The mold is molded in the following way: 4. The mold is molded in the following way: 5. The mold is molded in the following way: 6. The mold is molded in the following way: 7. The mold is molded in the following way: 8. The mold is molded in the following way: 9. The mold is molded in the following way: 10. The mold is molded in the following way: 11. The mold is molded in the following way: 12. The mold is molded in the following way: 13. The mold is molded in the following way: 14. The mold is molded in the following way: 15. The mold is molded in the following way: 16. The mold is molded in the following way: 17. The mold is molded in the following way: 18. The mold is molded in the following way: 19. The mold is molded in the following way: 20. The mold is molded in the following way: 21. The mold is molded in the following way: 22. The mold is molded in the following way: 23. The mold is molded in the following way: 24. The mold is molded in the following way: 25. The mold is molded in the following way: 26. The mold is molded in the following way: 27. The mold is molded in the following way: 28. The mold is molded in the following way: 29. The mold is molded in the following way: 30. The mold is molded in the following way: 31. The mold is molded in the following way: DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] Example 1

[0036] refer to Figures 1 to 6 The Y-shaped tube side trimming mold and method described in this embodiment include an upper mold plate 1 and a lower mold plate 11. The upper mold plate 1 is installed on the output end of the machine tool, and the bottom end of the lower mold plate 11 is installed on two groups of lower press plates 10 through two groups of lower pads 18.

[0037] A guide, a limit fixing mechanism and a side cutting mechanism are installed between the upper template 1 and the lower template 11; the guide is installed around the upper template 1 and the lower template 11, the limit fixing mechanism is installed in the middle of the upper template 1 and the lower template 11, and the side cutting mechanism is installed on both sides of the limit fixing mechanism.

[0038] The guide member includes a guide sleeve 2 and an upper limit column 4 installed around the upper template 1, and a guide column 21 and a lower limit column 20 installed around the lower template 11. When the upper template 1 is pressed down, the guide sleeve 2 and the guide column 21 are sleeved one by one; the upper limit column 4 and the lower limit column 20 are in contact one by one.

[0039] The limit fixing mechanism includes an upper limit mechanism installed on the upper template 1 and a lower limit mechanism installed on the lower template 11. The upper limit mechanism is installed between four groups of upper limit columns 4, and the lower limit mechanism is installed between four groups of lower limit columns 20. The upper limit mechanism and the lower limit mechanism are plugged together.

[0040] The upper limit mechanism includes an upper pad 5 and an inner guide column 9 installed on the upper template 1. The upper pad 5 is installed with an upper pressure plate 8 through a discharge screw 7 and a discharge spring. A Y-shaped cavity 6 is opened on the side of the upper pressure plate 8 away from the upper pad 5, and pads 17 are installed at the four corners of the upper pressure plate 8.

[0041] The lower limit mechanism includes a lower pad 19 installed on the lower template 11, a lower fixing plate 22 is installed on the lower pad 19, a Y-shaped model 30 and three sets of limit blocks 26 are installed on the lower fixing plate 22, the limit blocks 26 are L-shaped and the bottom and side surfaces of the limit blocks 26 are in contact with the outer wall of the Y-shaped tube respectively.

[0042] When the upper mold plate 1 is pressed down, the inner guide column 9 passes through the upper pressing plate 8 and is inserted into the lower pad 19, the pad 17 contacts the lower pad 19, the limit block 26 limits and fixes the Y-shaped tube, the cavity 6 is close to the outer wall of the Y-shaped tube, and the module 30 is close to the inner wall of the Y-shaped tube.

[0043] The side cutting mechanism includes a driving block 3 installed on the upper templates 1 on both sides of the upper limit mechanism and a cutter assembly installed on the lower templates 11 on both sides of the lower limit mechanism. The driving block 3 pushes the movable end of the cutter assembly to slide toward the middle.

[0044] The cross section of the driving block 3 is trapezoidal, the hypotenuse of the trapezoid faces the middle and the inclined surface gradually approaches the top end as it approaches the middle, and the inclined surface is slidably connected to the movable end of the cutter assembly.

[0045] The cutter assembly includes a slider seat 12 fixedly mounted on both sides of the lower template 11, a limit plate 27 fixedly mounted on one end of the slider seat 12 away from the model 30, a slider 14 mounted on the sliding seat 12, the slider 14 is slidably connected to the sliding seat 12, an elastic member 29 is mounted between the slider 14 and the sliding seat 12, the side of the slider 14 close to the limit plate 27 is a slope gradually descending close to the limit plate 27 and parallel to the slope of the driving block 3, two groups of knife block pads 13 are mounted on the end of the slider 14 close to the model 30, a fixed plate 15 is mounted on the knife block pad 13, and a top knife block 16, a top knife block 23, a bottom knife block 14 and a bottom knife block 25 are respectively mounted on the four groups of fixed plates 15, and the cutter assembly also includes a horizontally penetrating opening at the lower The lower knife groove 31 on the fixed plate 22, the top knife block 16 and the top knife block 23 have the same shape and are relatively close to or far away from each other in the same group of lower knife grooves 31, the bottom knife block 1 24 and the bottom knife block 2 25 have the same shape and are relatively close to or far away from each other in the same group of lower knife grooves 31, the blades of the top knife block 16 and the top knife block 23 are located at the end for cutting off the excess waste at the single branch of the Y-shaped tube, the bottom knife block 1 24 is F-shaped and is provided with a blade 1 32 located in the middle of the bottom knife block 1 24 and a blade 2 33 located on the inner wall of the end, the F-shaped ends of the bottom knife block 1 24 and the bottom knife block 2 25 are in cross contact, the blade 1 32 is used to cut off the excess waste at the outer side of the double branches of the Y-shaped tube, and the blade 2 33 is used to cut off the excess waste at the inner side of the double branches of the Y-shaped tube.

[0046] Preferably, a guide rod 28 is mounted on the sliding seat 12 , and the guide rod 28 passes through the sliding block 14 .

[0047] Preferably, the elastic member 29 comprises a spring, and the guide rod 28 is inserted into the spring.

[0048] When pressed down, the driving block 3 pushes the slider 14 to slide toward the middle, the inclined surface of the driving block 3 and the inclined surface of the slider 14 slide relative to each other, and the elastic member 29 is stretched.

[0049] Working process:

[0050] S1: clamping a half piece of Y-shaped tube from the previous process onto the model 30;

[0051] S2: The machine tool descends, the upper template 1 is pressed down, the limit block 26 fixes the three ends of the Y-shaped tube, and the inner guide pin 9 passes through the upper pressing plate 8 and is inserted into the lower pad 19 to play a guiding role, ensuring that the side cutting position is accurate and the cavity 6 is close to the outer wall of the Y-shaped tube;

[0052] S3: At the same time, as the upper template 1 descends, the driving block 3 pushes the slider 14 to slide toward the middle along the slider seat 12, and the two groups of sliders 14 drive the top knife block 16, the top knife block 23, the bottom knife block 124 and the bottom knife block 25 to extend toward the middle through the knife block pad 13 and the fixed plate 15. The top knife block 16 and the top knife block 23 punch out the excess waste on both sides of the single Y-shaped tube, the blade 132 of the bottom knife block 124 and the bottom knife block 25 punch out the excess waste on the outer side of the double Y-shaped tube, and the blade 233 of the bottom knife block 124 and the bottom knife block 25 punch out the excess waste on the inner side of the double Y-shaped tube;

[0053] S4: After the punching is completed, the upper template 1 rises, and the slider 14 is reset to both sides under the action of the elastic member 29, thereby driving the knife block to reset;

[0054] S5: The unloading screw 7 and the unloading spring push the Y-tube down to avoid sticking to the cavity 6.

[0055] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A Y-shaped tube side trimming die, comprising an upper die plate (1) and a lower die plate (11), characterized in that: A guide, a limit fixing mechanism and a side cutting mechanism are installed between the upper template (1) and the lower template (11), the limit fixing mechanism is installed in the middle, and the side cutting mechanism is installed on both sides of the limit fixing mechanism; the side cutting mechanism comprises a driving block (3) installed on the upper template (1) and a cutter assembly installed on the lower template (11), the movable end of the cutter assembly approaches or moves away from the limit fixing mechanism in a horizontal direction, and a plurality of groups of cutter blocks are installed on the movable end of the cutter assembly, and the driving block (3) is slidably connected to the cutter assembly.

2. The Y-shaped tube side trimming die according to claim 1, characterized in that: The cutter assembly comprises a slider seat (12) mounted on both sides of the lower template (11), a slider (14) being slidably mounted on the slider seat (12), a top knife block (16) and a bottom knife block (24) being mounted on one side near the middle of one group of sliders (14), a top knife block (23) and a bottom knife block (25) being mounted on one side near the middle of another group of sliders (14), and an end of the slider (14) away from the knife block is slidably connected to the cutter block (3).

3. The Y-shaped tube side trimming die according to claim 2, characterized in that: The bottom blade block 1 (24) and the bottom blade block 2 (25) have the same shape and are relatively close to or far away from each other. The bottom blade block 1 (24) is F-shaped and a blade edge 1 (32) is provided on the handle and a blade edge 2 (33) is provided on the end. The ends of the bottom blade block 1 (24) and the bottom blade block 2 (25) are cross-contacted.

4. The Y-shaped tube side trimming die according to claim 2, characterized in that: The driving block (3) has an inclined surface near the middle that gradually approaches the limit fixing mechanism from bottom to top, and the end of the sliding block (14) away from the blade block has an inclined surface parallel to the inclined surface of the driving block (3), and the two sets of inclined surfaces are slidably connected.

5. The Y-shaped tube side trimming die according to claim 2, characterized in that: A limiting plate (27) is fixedly mounted on one end of the slider seat (12) away from the limiting fixing mechanism, and the driving block (3) is located between the limiting block (27) and the slider (14).

6. The Y-shaped tube side trimming die according to claim 2, characterized in that: An elastic member (29) and a guide rod (28) are installed between the slider (14) and the sliding seat (12); the deformation direction of the elastic member (29) is consistent with the length direction of the guide rod (28) and the sliding direction of the slider (14); when the slider (14) slides toward the middle, the elastic member (29) is stretched.

7. The Y-shaped tube side trimming die according to claim 1, characterized in that: The limit fixing mechanism comprises an upper limit mechanism installed on the upper template (1) and a lower limit mechanism installed on the lower template (11), and the upper limit mechanism and the lower limit mechanism are plugged into each other.

8. The Y-shaped tube side trimming die according to claim 7, characterized in that: The upper limit mechanism comprises an upper pressing plate (8) mounted on the upper template (1), a Y-shaped cavity (6) is provided on the upper pressing plate (8) facing the lower template (11), and the lower limit mechanism comprises a Y-shaped model (30) mounted on the lower template (11), the cavity (6) and the model (30) correspond to each other.

9. The Y-shaped tube side trimming die according to claim 8, characterized in that: The lower limit mechanism comprises a lower fixing plate (22) mounted on the lower template (11), the model (30) is mounted on the lower fixing plate (22), and a lower knife groove (31) for accommodating the movement of the knife block is horizontally penetrated through the lower fixing plate (22) below the model (30).

10. A Y-shaped tube side trimming method, the steps are as follows: S1: clamping the half piece of Y-shaped tube from the previous process onto the model (30); S2: The upper template (1) presses down: S21: The limiting block (26) fixes the three ends of the Y-shaped tube, the inner guide pin (9) passes through the upper pressing plate (8) and is inserted into the lower pad (19), and the mold cavity (6) is closely attached to the outer wall of the Y-shaped tube; S22: The driving block (3) pushes the slider (14) to slide toward the middle along the slider seat (12), and the two groups of sliders (14) push the top knife block 1 (16), the top knife block 2 (23), the bottom knife block 1 (24) and the bottom knife block 2 (25) to move toward the middle, the top knife block 1 (16) and the top knife block 2 (23) punch out the excess waste on both sides of the single Y-shaped tube, the blade 1 (32) of the bottom knife block 1 (24) and the bottom knife block 2 (25) punch out the excess waste on the outer side of the double Y-shaped tube, and the blade 2 (33) of the bottom knife block 1 (24) and the bottom knife block 2 (25) punch out the excess waste on the inner side of the double Y-shaped tube; S3: The upper template (1) rises, and the slider (14) is reset to both sides under the action of the elastic member (29), thereby driving the knife block to reset.

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