A rapid positioning device for a door leaf shearing machine

Abstract

The present invention discloses a rapid positioning device for a door leaf shearing machine, belonging to the technical field of door leaf production. It solves the problems existing in the positioning tooling of the existing door leaf shearing machine, such as various types, adverse effects on on-site management, and cumbersome dimensioning steps. It includes a base, a slider and a positioning block. One side of the base is a vertical facade, on which dimension scale lines are provided, and the minimum scale value of the dimension scale lines is 10 mm. A chute parallel to the facade and cooperating with the slider is provided on the upper surface of the base along the length direction of the base. The slider is slidably arranged in the chute through a first positioning pin assembly, so that the minimum distance for the slider to move in the chute is the minimum scale value of the dimension scale lines; the slider is slidably arranged in the chute, and a reference line parallel to the scale value is provided on the slider. The positioning block is a regular pentagon.

Description

Technical Field

[0001] The present invention relates to the technical field of door leaf production, and more specifically, to a quick positioning device for a door leaf shearing machine. Background Art

[0002] When producing door leaves, a door leaf shearing machine is required to cut the plate according to corresponding size specifications. At present, most of the positioning tools of door leaf shearing machines adopt a bolt fixing method, and no corresponding size scale lines are made on the base, and there are various types of positioning blocks, which has an adverse impact on on-site management. Although some have size scale lines on the base, other tools are still needed for assistance during measurement, and the measurement steps are cumbersome. Summary of the Invention

[0003] In order to solve the problems existing in the positioning tools of the existing door leaf shearing machines, such as various types, adverse impact on on-site management, and cumbersome dimensioning steps, the present invention provides a quick positioning device for a door leaf shearing machine.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A quick positioning device for a door leaf shearing machine, comprising a base, a slider and a positioning block. One side of the base is a vertical surface, and size scale lines are provided on this surface. The minimum scale value of the size scale lines is 10 mm. A chute parallel to the vertical surface and cooperating with the slider is opened on the upper surface of the base along the length direction of the base. The slider is slidably arranged in the chute through a first positioning pin assembly, so that the minimum distance for the slider to move in the chute is the minimum scale value of the size scale lines;

[0006] The slider is slidably arranged in the chute. A reference line parallel to the scale value is provided on the slider. The positioning block is a regular pentagon, and the positioning block is rotatably connected to the slider through a second positioning pin assembly, so that when the positioning block is fixed on the slider, the side of the positioning block opposite to the vertical surface provided with the size scale lines is aligned with the vertical surface provided with the size scale lines;

[0007] On each side of the positioning block, there are boss bodies respectively. On both sides of each boss body, there are stop edges for measurement and positioning. On the front of the five boss bodies, the numbers 0, 1, 2, 3, and 4 are marked in sequence. On the back of the five boss bodies, the numbers 5, 6, 7, 8, and 9 are marked in sequence. Among them, the numbers 0 and 9, 1 and 8, 2 and 7, 3 and 6, 4 and 5 are respectively marked on the same boss body. The width of each boss body is 11 mm. The distance from the stop edge on the side of the boss body marked with the number 0 close to the alignment line to the center line of the positioning block is 10 mm. This center line is perpendicular to the side of the positioning block where the boss body marked with the number 0 is located. When the sides of the positioning blocks where the boss bodies marked with adjacent numbers are located are rotated to align with the vertical surface provided with the dimension scale line, the interval value between the boss bodies marked with adjacent numbers is 1 mm. The vertical distance from the alignment line on the slider to the stop edge on the side of the boss body marked with the number 0 close to the alignment line is L, and L = n * 10 mm, where n is an integer greater than 4.

[0008] Further, the first positioning pin assembly includes a first positioning pin. A number of first positioning holes are equidistantly arranged in the chute, and the distance between adjacent first positioning holes is 10 mm. A second positioning hole matching the first positioning hole is penetrated through the slider. The first positioning pin penetrates through the second positioning hole and the first positioning hole in sequence to realize the positioning of the slider and the base.

[0009] Further, the chute is a dovetail groove, and the slider is a slider with a trapezoidal cross-section matching the dovetail groove.

[0010] Further, the second positioning pin assembly includes a second positioning pin. The cross-section of the second positioning pin is a regular pentagon. A third positioning hole matching the second positioning pin is opened at the center of the positioning block. The cross-section of the third positioning hole is a regular pentagon, and each side of the third positioning hole is respectively parallel to each side of the positioning block. A fourth positioning hole matching the third positioning hole is opened at the corresponding position on the slider. The cross-section of the fourth positioning hole is a regular pentagon, and each side of the fourth positioning hole is respectively parallel to each side of the third positioning hole. The second positioning pin penetrates through the third positioning hole and the fourth positioning hole in sequence to realize the positioning of the positioning block and the slider.

[0011] Further, the second positioning pin assembly includes a second positioning pin. The cross-section of the second positioning pin is circular, and the number of second positioning pins is at least two. Ten third positioning holes are provided on the positioning block and are arranged at equal intervals with the center of the positioning block as the center of the circle. Among them, two third positioning holes whose connecting line passes through the center of the positioning block are correspondingly arranged in parallel on each side of the positioning block. Fourth positioning holes are provided at positions on the slider corresponding to the two horizontally opposite third positioning holes. The cross-section of the fourth positioning hole is circular, and the connecting line of the two fourth positioning holes is parallel to the vertical surface provided with the dimension scale line. The second positioning pins pass through the third positioning holes and the fourth positioning holes in sequence to realize the positioning of the positioning block and the slider.

[0012] Further, the quick positioning device for the door leaf shearing machine further includes a handle, and a bolt is provided on the handle. A through hole is provided at the center of the positioning block, and a threaded hole is provided at a position on the slider opposite to the through hole for engaging with the bolt. The positioning block and the slider are tightly positioned by screwing the bolt on the handle through the through hole and the threaded hole.

[0013] The beneficial effects of the present invention compared with the prior art are as follows:

[0014] 1. The positioning device provided by the present invention has a novel structure. Although the structure seems simple, it has strong practicability and is very convenient to use, which is very suitable for workers to operate. Using the positioning device of the present invention, accurate positioning of any dimension length can be quickly achieved, and it can be quickly adjusted to the required dimension, solving the problem of slow adjustment and positioning of the existing positioning block.

[0015] 2. Only one set of positioning tooling is required for each device on site, solving the problem of a large variety of positioning blocks on site and inconvenient management, and improving the positioning efficiency.

[0016] 3. Tool-free operation is achieved, and since only one set of positioning tooling is required for each device on site, the 6S effect on site is greatly improved.

[0017] 4. The operation is simple, and the skills required for the operating workers are greatly reduced. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the parts of a quick positioning device for a door leaf shearing machine of the present invention;

[0019] Figure 2 is a top view of a quick positioning device for a door leaf shearing machine of the present invention;

[0020] Figure 3 is a side view of a quick positioning device for a door leaf shearing machine of the present invention;

[0021] Figure 4It is a top view of the slider of a quick positioning device for a door leaf shearing machine according to the present invention;

[0022] Figure 5 It is a schematic structural view of the slider of a quick positioning device for a door leaf shearing machine according to the present invention;

[0023] Figure 6 It is a schematic view of the base of a quick positioning device for a door leaf shearing machine according to the present invention;

[0024] Figure 7 It is a schematic view of the use state of a quick positioning device for a door leaf shearing machine according to the present invention;

[0025] Figure 8 It is a schematic view of the front and back of the positioning block of a quick positioning device for a door leaf shearing machine according to the present invention.

[0026] Markings in the figure: 1 - handle, 2 - positioning block, 3 - second positioning pin, 4 - first positioning pin, 5 - slider, 6 - base, 7 - dimension scale line, 8 - chute, 9 - first positioning hole, 10 - boss, 11 - second positioning hole, 12 - threaded hole, 13 - alignment line, 14 - sheet material, 15 - through hole, 16 - third positioning hole. Detailed implementation manners

[0027] The present invention will be further described below in conjunction with embodiments. The described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0028] Embodiment 1:

[0029] As Figure 1-3 shown, a quick positioning device for a door leaf shearing machine includes a base 6, a slider 5 and a positioning block 2. One side of the base 6 is a vertical facade, and dimension scale lines 7 are provided on this facade. The minimum scale division value of the dimension scale lines 7 is 10 mm. As Figure 6 shown, a chute 8 parallel to the facade and cooperating with the slider 5 is opened on the upper surface of the base 6 along the length direction of the base 6. The slider 5 is slidably arranged in the chute 8 through a first positioning pin 4 assembly, so that the minimum distance for the slider 5 to move in the chute 8 is the minimum scale division value of the dimension scale lines 7;

[0030] As Figure 4 and 5As shown, the slider 5 is slidably arranged in the chute 8. A reference line 13 parallel to the scale value is provided on the slider 5. The positioning block 2 is a regular pentagon. The positioning block 2 is rotationally connected to the slider 5 through the second positioning pin 3 assembly. When the positioning block 2 is fixed on the slider 5, the side of the positioning block 2 opposite to the vertical surface provided with the dimension scale line 7 is aligned with the vertical surface provided with the dimension scale line 7;

[0031] On each side of the positioning block 2, there are respectively provided bosses 10. On both sides of the boss 10 are respectively the edges for measurement and positioning. The fronts of the five bosses 10 are respectively marked with the numbers 0, 1, 2, 3, 4 in sequence. The backs of the five bosses 10 are respectively marked with the numbers 5, 6, 7, 8, 9 in sequence. Among them, the numbers 0 and 9, 1 and 8, 2 and 7, 3 and 6, 4 and 5 are respectively marked on the same boss 10. The width of each boss 10 is 11 mm. The distance from the edge of the boss 10 marked with the number 0 close to the reference line 13 to the center line of the positioning block 2 is 10 mm. This center line is perpendicular to the side of the positioning block 2 where the boss 10 marked with the number 0 is located; when the sides of the positioning block 2 where the bosses 10 marked with adjacent numbers are located are rotated to be aligned with the vertical surface provided with the dimension scale line 7, the interval value between the bosses 10 marked with adjacent numbers is 1 mm; the vertical distance from the reference line 13 on the slider 5 to the edge of the boss 10 marked with the number 0 close to the reference line 13 is L, and L = n * 10 mm, where n is an integer greater than 4.

[0032] The positioning device provided by the present invention has a novel structure. The structure seems simple but has strong practicability and is also convenient to use, which is very suitable for workers to operate. Using the positioning device of the present invention, precise positioning of any dimension length can be quickly realized. Here, the dimension length refers to the length value in millimeters. When the door leaf is produced, the shearing plate dimension required is also accurate to millimeters.

[0033] Such as Figure 7As shown below, taking 752 mm as an example, the working principle of the present invention will be introduced in detail. First, adjust the side of the positioning block 2 of the boss 10 marked with the number 0 to align with the vertical surface provided with the dimension scale line 7. At this time, the edge guards on both sides of the boss 10 marked with the number 0 are perpendicular to the vertical surface provided with the dimension scale line 7. Place the plate 14 to be cut on the vertical surface of the base 6 provided with the dimension scale line 7, and then abut one end of the plate 14 to be cut against the edge guard of the boss 10 marked with the number 0. Here, 752 mm is decomposed into 750 mm + 2 mm for alignment and positioning. First, we can know that the vertical distance from the alignment line 13 on the slider 5 to the edge guard on the side of the boss 10 marked with the number 0 close to the alignment line 13 is L, and the scale value of the dimension scale line 7 on the base 6 corresponding to the alignment line 13 on the slider 5 is the actual dimension value. In order to achieve rapid positioning, we need to abut one end of the plate 14 to be cut against the edge guard of the boss 10 marked with the number 0 during positioning. At this time, make the edge guard on the side of the boss 10 marked with the number 0 close to the alignment line 13 correspond to any dimension scale line 7 on the base 6. Suppose it corresponds to the scale at the value of M. Then, at this time, the value of the alignment line 13 on the slider 5 corresponding to the dimension scale line 7 on the base 6 is N, and N = M - L. Then, from this, we can conclude that if we want to achieve the positioning of 750 mm by abutting one end of the plate 14 to be cut against the edge guard of the boss 10 marked with the number 0, then the alignment line 13 of the slider 5 should not correspond to 750 mm, but should correspond to the position of 750 - L. Let n be taken as 1, then L = 40 mm, and the alignment line 13 of the slider 5 should correspond to the position of 710, that is, abut one end of the plate 14 to be cut against the edge guard of the boss 10 marked with the number 0, and then make the slider 5 slide in the chute 8 through the first positioning pin 4 assembly. When the alignment line 13 on the slider 5 is aligned with the scale line of 710 on the dimension scale line 7 of the base 6, at this time, the length of the plate 14 to be cut is 750 mm.

[0034] It can be seen from the above description that 750 mm can be rapidly positioned through the boss 10 marked with the number 0 of the positioning block 2, the alignment line 13 on the slider 5, and the dimension scale line 7 on the base 6. Directly abutting one end of the plate 14 to be cut against the edge guard of the boss 10 marked with the number 0 is the value of the length of the plate 14 to be cut except for the units digit, which is 750 mm in this embodiment. At the same time, when L is taken as 40 mm, then the alignment line 13 of the slider 5 should be aligned with the scale line of 710 on the dimension scale line 7 of the base 6 to play a role in assisting positioning.

[0035] Similarly, the hundreds and tens digits of any three-digit number can be quickly located (the same applies to four-digit numbers). Here, it should be noted that why the minimum division value of the size scale line 7 on the vertical surface of the base 6 is 10 mm instead of 1 mm. This is because if the division value is 1 mm, then the number of size scale lines 7 on the vertical surface is too large and the scale lines are too dense, which is not convenient for workers to quickly locate during plate cutting and wastes time. Moreover, due to the dense scale lines, the font size for marking the values is very small, and it is very easy to make positioning errors and cut the wrong size, resulting in waste of the plate 14. However, the minimum division value of the size scale line 7 of the present invention is 10 mm. The number of scale lines is greatly reduced compared to the size scale line 7 with a division value of 1 mm, and the distance between adjacent scale lines becomes 10 times larger. The font size for marking the values also becomes larger accordingly, and the alignment line 13 on the slider 5 can be quickly and accurately positioned on the M-L scale line.

[0036] Such as Figure 8As shown in the figure, the method for quickly positioning the units digit will be described below. This is also the key point of the present invention, that is, the structural setting of the boss 10 of the positioning block 2. The design of the boss 10 of the positioning block 2 is very ingenious. From the above description, it can be known that when the edge of the boss 10 marked with the number 0 close to the reference line 13 coincides with 750 mm, the length of the sheet 14 to be cut is 750 mm. The boss 10 marked with the number 0 is a rectangle protruding from the side of a regular pentagon, with a width of 11 mm. The distance from the edge of the boss 10 marked with the number 0 close to the reference line 13 to the center line of the positioning block 2 is 10 mm, and this center line is perpendicular to the side of the positioning block 2 where the boss 10 with the number 0 is located. When the side of the positioning block 2 where the boss 10 marked with adjacent numbers rotates to align with the plane where the dimension scale line 7 is provided, the interval value between the bosses 10 marked with adjacent numbers is 1 mm. That is to say, when the boss 10 marked with the number 1 rotates to the side of the positioning block 2 where it is located and rotates to align with the plane where the dimension scale line 7 is provided, the distance from the edge of the boss 10 marked with the number 1 close to the reference line 13 to the center line of the positioning block 2 is 9 mm. By analogy, the distance from the edge of the boss 10 marked with the number 2 close to the reference line 13 to the center line of the positioning block 2 is 8 mm, the distance from the edge of the boss 10 marked with the number 3 close to the reference line 13 to the center line of the positioning block 2 is 7 mm, and the distance from the edge of the boss 10 marked with the number 4 close to the reference line 13 to the center line of the positioning block 2 is 6 mm. Then when the boss 10 marked with the number 1 rotates to the side of the positioning block 2 where it is located and rotates to align with the plane where the dimension scale line 7 is provided, the boss 10 marked with the number 1 is equivalent to the boss 10 marked with the number 0 moving backward by 1 mm. At this time, one end of the sheet 14 to be cut is abutted against the edge of the boss 10 marked with the number 1 close to the reference line 13, that is, the sheet 14 to be cut moves backward by 1 mm on the basis of 750 mm. At this time, the length of the sheet 14 to be cut is 751 mm.

[0037] Similarly, when the boss 10 marked with the number 2 rotates to the side of the positioning block 2 where it is located and rotates to align with the plane where the dimension scale line 7 is provided, the boss 10 marked with the number 2 is equivalent to the boss 10 marked with the number 1 moving backward by 1 mm. At this time, one end of the sheet 14 to be cut is abutted against the edge of the boss 10 marked with the number 2 close to the reference line 13, that is, the sheet 14 to be cut moves backward by 1 mm on the basis of 751 mm. At this time, the length of the sheet 14 to be cut is 752 mm.

[0038] Speaking of this, it is not difficult for us to find that the fronts of the five bosses 10 are respectively marked with the numbers 0, 1, 2, 3, and 4 in sequence, and the backs of the five bosses 10 are respectively marked with the numbers 5, 6, 7, 8, and 9 in sequence. These numbers respectively represent the dimensional values of the units digit. That is to say, when the edge of the boss 10 marked with the number 0 close to the alignment line 13 coincides with 750 mm, first determine the length values of the hundreds and tens digits of the sheet 14 to be cut, which is 750 mm. Then, according to the required unit digit value, directly rotate the side of the positioning block 2 where the boss 10 marked with this number is located to align with the vertical surface provided with the dimension scale line 7, and then abut one end of the sheet 14 to be cut against the edge of the boss 10 marked with this number close to the alignment line 13, and the positioning of the required dimension can be completed.

[0039] Here, it is also necessary to elaborate on the setting principle that the backs of the five bosses 10 are respectively marked with the numbers 5, 6, 7, 8, and 9 in sequence. Taking 758 mm as an example, since the numbers 0 and 9, 1 and 8, 2 and 7, 3 and 6, 4 and 5 are respectively marked on the same boss 10, the width of each boss 10 is 11 mm, and the distance from the edge of the boss 10 marked with the number 0 close to the alignment line 13 to the center line of the positioning block 2 is 10 mm. When the unit digit is 5, 6, 7, 8, or 9, the positioning block 2 needs to be turned over, that is, the front and back are swapped. When the edge of the boss 10 marked with the number 0 (at this time, the number 0 is on the back of the boss 10) close to the alignment line 13 coincides with 750 mm, the distance from the edge of the boss 10 marked with the number 0 close to the alignment line 13 to the center line of the positioning block 2 is 10 mm. At this time, after swapping the front and back of the positioning block 2, the distance from the edge of the boss 10 marked with the number 0 close to the alignment line 13 to the center line of the positioning block 2 is 1 mm, that is, the distance from the edge of the boss 10 marked with the number 9 close to the alignment line 13 to the center line of the positioning block 2 is 1 mm. At this time, abut one end of the sheet 14 to be cut against the edge of the boss 10 marked with the number 9 close to the alignment line 13, that is, the sheet 14 to be cut moves 9 mm backward on the basis of 750 mm. At this time, the length of the sheet 14 to be cut is 759 mm.

[0040] Similarly, after swapping the front and back of the positioning block 2, when the edge of the boss 10 marked with the number 1 (at this time, the number 1 is on the back of the boss 10) close to the alignment line 13 coincides with 750 mm, the distance from the edge of the boss 10 marked with the number 1 close to the alignment line 13 to the center line of the positioning block 2 is 2 mm, that is, the distance from the edge of the boss 10 marked with the number 8 close to the alignment line 13 to the center line of the positioning block 2 is 2 mm. At this time, abut one end of the sheet 14 to be cut against the edge of the boss 10 marked with the number 8 close to the alignment line 13, that is, the sheet 14 to be cut moves 8 mm backward on the basis of 750 mm. At this time, the length of the sheet 14 to be cut is 758 mm.

[0041] Similarly, the principle of the quick positioning dimensions of the bosses 10 marked with 5, 6, and 7 will not be elaborated. For the purpose of explaining the working principle of the present invention, 752 mm and 758 mm are taken as examples for illustration. Other values, including four-digit values, will not be elaborated. The quick positioning principles for the thousandth, hundredth, and tenth digits are the same, and the quick principle for the units digit is also the same. At the same time, the value of L is not limited, and 40 mm, 50 mm, or 60 mm can all be used, just to avoid the width dimension of the positioning block 2 itself.

[0042] In this embodiment, the first positioning pin 4 assembly includes a first positioning pin 4. A plurality of first positioning holes 9 are equidistantly arranged in the chute 8, and the distance between adjacent first positioning holes 9 is 10 mm. A second positioning hole 11 matching the first positioning hole 9 is penetrated through the slider 5. The first positioning pin 4 sequentially penetrates through the second positioning hole 11 and the first positioning hole 9 to realize the positioning of the slider 5 and the base 6. Through the above structure, it can be ensured that no matter where the slider 5 moves to for positioning, it can be locked and positioned by the first positioning pin 4. Preferably, the second positioning hole 11 is a tapered hole, and the diameter of the small hole at the bottom end of the tapered hole is equal to the diameter of the first positioning hole 9. The second positioning pin 3 is a tapered positioning pin matching the tapered hole. Such a setting is to make the cooperation between the first positioning pin 4, the first positioning hole 9, and the second positioning hole 11 more firm through taper fit.

[0043] Preferably, the chute 8 is a dovetail groove, and the slider 5 is a slider 5 with a trapezoidal cross-section matching the dovetail groove. This structure makes the cooperation between the slider 5 and the chute 8 more precise. At the same time, when the positioning device of the present invention is used in a side-mounted manner, the chute 8 can also play a certain limiting role on the slider 5, improving the positioning accuracy.

[0044] In this embodiment, the second positioning pin 3 assembly includes a second positioning pin 3. The cross-section of the second positioning pin 3 is a regular pentagon. A third positioning hole 16 matching the second positioning pin 3 is formed in the center of the positioning block 2. The cross-section of the third positioning hole 16 is a regular pentagon, and each side of the third positioning hole 16 is respectively parallel to each side of the positioning block 2. A fourth positioning hole is formed in the slider 5 at a position corresponding to the third positioning hole 16. The cross-section of the fourth positioning hole is a regular pentagon, and each side of the fourth positioning hole is respectively parallel to each side of the third positioning hole 16. The second positioning pin 3 sequentially passes through the third positioning hole 16 and the fourth positioning hole to realize the positioning of the positioning block 2 and the slider 5. Only one second positioning pin 3 is provided in this embodiment, that is, a second positioning pin 3 with a regular pentagon cross-section. Since the positioning hole of the regular pentagon must ensure that the rotation angle is the same each time during rotation, the second positioning pin 3 with a regular pentagon cross-section and the third positioning hole 16 with a regular pentagon cross-section can achieve this. At the same time, because the cross-section of the second positioning pin 3 is a regular pentagon and it can be positioned mainly by being inserted into the third positioning hole 16, only one second positioning pin 3 is needed to realize the rotational positioning of the positioning block 2 and the slider 5. It is convenient to use.

[0045] In this embodiment, the second positioning pin 3 assembly includes a second positioning pin 3. The cross-section of the second positioning pin 3 is circular, and the number of the second positioning pins 3 is at least two. Ten third positioning holes 16 mating with the second positioning pin 3 are formed in the positioning block 2. The third positioning holes 16 are equidistantly arranged with the center of the positioning block 2 as the center of the circle. Among them, two third positioning holes 16 whose connecting lines penetrate through the center of the positioning block 2 are correspondingly arranged in parallel on each side of the positioning block 2. Fourth positioning holes are formed at positions on the slider 5 corresponding to the two horizontally opposite third positioning holes 16. The cross-section of the fourth positioning hole is circular, and the connecting line of the two fourth positioning holes is parallel to the vertical surface provided with the dimension scale line 7. The second positioning pins 3 sequentially penetrate through the third positioning holes 16 and the fourth positioning holes to realize the positioning of the positioning block 2 and the slider 5. This embodiment provides another positioning structure, that is, it is realized by the second positioning pin 3 with a circular cross-section. Since the cross-section is circular, at least two second positioning pins 3 are required to realize the positioning between the positioning holes and the slider 5. At the same time, the positioning block 2 needs to be rotated 5 times, so 10 third positioning holes 16 are required, and the two fourth positioning holes on the slider 5 are fixed. Ensure that after the positioning holes are rotated, the center remains unchanged and can still be accurately inserted into the fourth positioning holes. Therefore, the third positioning holes 16 are equidistantly arranged with the center of the positioning block 2 as the center of the circle. Among them, two third positioning holes 16 whose connecting lines penetrate through the center of the positioning block 2 are correspondingly arranged in parallel on each side of the positioning block 2. Fourth positioning holes are formed at positions on the slider 5 corresponding to the two horizontally opposite third positioning holes 16. The cross-section of the fourth positioning hole is circular, and the connecting line of the two fourth positioning holes is parallel to the vertical surface provided with the dimension scale line 7. The second positioning pins 3 sequentially penetrate through the third positioning holes 16 and the fourth positioning holes to realize the positioning of the positioning block 2 and the slider 5. Although this structure requires two second positioning pins 3, it is not necessary to set the second positioning pins 3 at the center of the positioning holes, which is convenient for installing the handle 1 for locking.

[0046] In this embodiment, the quick positioning device of the door leaf shearing machine further includes a handle 1. A bolt is provided on the handle 1. A through hole 15 is formed at the center of the positioning block 2. A threaded hole 12 mating with the bolt is formed at a position on the slider 5 opposite to the through hole 15. The bolt on the handle 1 passes through the through hole 15 and is screwed into the threaded hole 12 to realize the tight positioning of the positioning block 2 and the slider 5. Since the regular pentagon needs to be rotated, the through hole 15 and the threaded hole 12 must be concentric with the center of the positioning hole. Therefore, when the handle 1 is set, only two second positioning pins 3 with circular cross-sections can be used to realize it. The function of the handle 1 is that after the positioning block 2 and the slider 5 are positioned, the bolt of the handle 1 is screwed into the threaded hole 12 of the slider 5 to realize locking, which is convenient for continuous production. To prevent the loosening of the positioning block 2 and inaccurate positioning when the plate 14 is continuously positioned with the boss 10 during continuous production.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A quick positioning device for a door leaf shearing machine, characterized in that, It includes a base (6), a slider (5) and a positioning block (2). One side of the base (6) is a vertical facade, on which a dimensional scale line (7) is provided. The minimum graduation value of the dimensional scale line (7) is 10 mm. Along the length direction of the base (6) on the upper surface of the base (6), a chute (8) parallel to the facade and matching with the slider (5) is opened. The slider (5) is slidably arranged in the chute (8) through a first positioning pin (4) assembly, so that the minimum distance for the slider (5) to move in the chute (8) is the minimum graduation value of the dimensional scale line (7). The slider (5) is slidably arranged in the chute (8). A reference line (13) parallel to the dimensional scale line (7) is provided on the slider (5). The positioning block (2) is a regular pentagon. The positioning block (2) is rotationally connected to the slider (5) through a second positioning pin (3) assembly. When the positioning block (2) is fixed on the slider (5), the side of the positioning block (2) opposite to the facade with the dimensional scale line (7) is aligned with the facade with the dimensional scale line (7). On each side of the positioning block (2), a boss (10) is respectively provided. On both sides of the boss (10) are the edges for measurement and positioning. The fronts of the five bosses (10) are respectively marked with numbers 0, 1, 2, 3, 4 in sequence. The backs of the five bosses (10) are respectively marked with numbers 5, 6, 7, 8, 9 in sequence. Among them, the markings corresponding to the numbers 0 and 9, 1 and 8, 2 and 7, 3 and 6, 4 and 5 are on the same boss (10). The width of each boss (10) is 11 mm. The distance from the edge of the boss (10) marked with number 0 close to the reference line (13) to the center line of the positioning block (2) is 10 mm. This center line is perpendicular to the side of the positioning block (2) where the boss (10) marked with number 0 is located. When the sides of the positioning block (2) where the bosses (10) marked with adjacent numbers are located are rotated to be aligned with the facade with the dimensional scale line (7), the interval value between the bosses (10) marked with adjacent numbers is 1 mm. The perpendicular distance from the reference line (13) on the slider (5) to the edge of the boss (10) marked with number 0 close to the reference line (13) is L, and L = n * 10 mm, where n is an integer greater than 4. The first positioning pin (4) assembly includes a first positioning pin (4). A number of first positioning holes (9) are equidistantly arranged in the chute (8). The distance between adjacent first positioning holes (9) is 10 mm. A second positioning hole (11) matching with the first positioning hole (9) is penetrated through the slider (5). The first positioning pin (4) penetrates through the second positioning hole (11) and the first positioning hole (9) in sequence to realize the positioning of the slider (5) and the base (6). The second positioning hole (11) is a tapered hole, and the diameter of the small hole at the bottom end of the tapered hole is equal to the diameter of the first positioning hole (9). The first positioning pin (4) is a tapered positioning pin matching with the tapered hole. The sliding groove (8) is a dovetail groove, and the slider (5) is a slider (5) with a trapezoidal cross-section that mates with the dovetail groove.

2. The quick positioning device of a door leaf shearing machine according to claim 1, characterized in that, The second positioning pin (3) assembly includes a second positioning pin (3). The cross-section of the second positioning pin (3) is a regular pentagon. A third positioning hole (16) that mates with the second positioning pin (3) is provided at the center of the positioning block (2). The cross-section of the third positioning hole (16) is a regular pentagon, and each side of the third positioning hole (16) is respectively parallel to each side of the positioning block (2). A fourth positioning hole is provided at a position on the slider (5) corresponding to the third positioning hole (16). The cross-section of the fourth positioning hole is a regular pentagon, and each side of the fourth positioning hole is respectively parallel to each side of the third positioning hole (16). The second positioning pin (3) sequentially passes through the third positioning hole (16) and the fourth positioning hole to achieve the positioning of the positioning block (2) and the slider (5).

3. The quick positioning device for a door leaf shearing machine according to claim 1, characterized in that, The second positioning pin (3) assembly includes a second positioning pin (3). The cross-section of the second positioning pin (3) is circular, and the number of the second positioning pins (3) is at least two. 10 third positioning holes (16) that mate with the second positioning pin (3) are provided on the positioning block (2). The third positioning holes (16) are equidistantly arranged with the center of the positioning block (2) as the center of the circle. Among them, each side of each positioning block (2) is parallel to and corresponds to two third positioning holes (16) whose connecting line passes through the center of the positioning block (2). A fourth positioning hole is provided at a position on the slider (5) corresponding to two horizontally opposite third positioning holes (16). The cross-section of the fourth positioning hole is circular, and the connecting line of the two fourth positioning holes is parallel to the vertical surface provided with the dimension scale line (7). The second positioning pins (3) respectively pass through the third positioning holes (16) and the fourth positioning holes in sequence to achieve the positioning of the positioning block (2) and the slider (5).

4. A quick positioning device for a door leaf shearing machine according to claim 3, characterized in that, The quick positioning device for the door leaf shearing machine further includes a handle (1). A bolt is provided on the handle (1). A through hole (15) is provided at the center of the positioning block (2). A threaded hole (12) that mates with the bolt is provided at a position on the slider (5) opposite to the through hole (15). The positioning block (2) and the slider (5) are tightly positioned by screwing the bolt on the handle (1) through the through hole (15) and the threaded hole (12).

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