A stretching straightening device

Abstract

The present invention discloses a stretching and straightening device, including a stretching head, wherein the number of the stretching heads is two and they are matched with the ends of the groove profile respectively. The stretching head includes an upper clamp plate, a lower clamp plate and a cushion block. In this scheme, a groove having the same shape as the groove profile is provided on the lower clamp plate, and the groove profile can be embedded in the groove. The side wall of the groove effectively supports the side wall of the groove profile to prevent the side wall from tilting outward during the stretching process of the groove profile. During the stretching and straightening process, the upper clamp plate is pressed against the top wall of the cushion block, and the bottom wall of the cushion block is fitted with the bottom beam of the groove profile. At the same time, the bottom of the groove of the lower clamp plate is fitted with the bottom beam of the groove profile. During the stretching and straightening process, the entire cross-section of the groove profile is subjected to uniform force, and effective stretching and straightening of the groove profile can be achieved to eliminate the defects that the curvature and torsion of the groove profile do not meet the technical requirements, and reduce or eliminate the quenching residual stress.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, and in particular to a stretching and straightening device. Background Art

[0002] Large-sized trough profiles produced by large or heavy-duty extruders have the problems of large bending after extrusion and large quenching deformation, resulting in the bending and twisting of the trough profiles failing to meet the technical standard requirements. In addition, the trough profiles that have been heat treated by quenching have large quenching residual stresses inside the metal due to rapid cooling during quenching.

[0003] In the prior art, the method of stretching and straightening is generally used to eliminate the defects of the curvature and twisting of the groove profile that do not meet the technical requirements, as well as the quenching residual stress.

[0004] The channel-shaped profile comprises a side wall 01 and a bottom beam 02, and the side wall 01 and the bottom beam 02 form a channel of the channel-shaped profile.

[0005] like Figure 1 As shown, it is a channel-shaped profile with the side wall 01 and the bottom beam 02 at right angles. Figure 2 As shown, the side wall 01 is a channel-shaped profile with a small outward inclination angle. Figure 7 and Figure 8 The tensile straightening method of the channel profile is to directly use the upper clamp plate 03 and the lower clamp plate 04 to clamp the bottom surface of the bottom beam 02 and the top surface of the side wall 01 of the channel profile. Figure 1 and Figure 2 The shown trough profile with a larger width can be filled with a rectangular pad 05 in the groove of the trough profile, and then the upper clamp plate 03 and the lower clamp plate 04 are used to clamp the bottom surface of the bottom beam 02 and the top surface of the side wall 01 of the trough profile.

[0006] For channel-shaped profiles with side walls 01 tilted outward at a large angle or thin side walls, such as Figure 3-6 As shown, the method of directly clamping the grooved profile using the upper clamp plate 03 and the lower clamp plate 04 will have significant shortcomings. Figure 3 The left and right side walls 01 shown are of equal height and the side walls 01 are inclined outward at a greater angle. Figure 5 As shown in the figure, the left and right side walls 01 are of different heights. When the upper clamp plate 03 and the lower clamp plate 04 directly clamp the groove profile, the side wall 01 will deform and further deflect outwards, as shown in FIG. Figure 4 As shown in the figure, the top surface of the groove-shaped profile is not parallel to the clamping surface of the clamp plate. The clamping surface of the upper clamp plate 03 on the top surface is very small, resulting in a small friction between the upper clamp plate 03 and the top surface, and the groove-shaped profile cannot be effectively stretched. Figure 6 The side wall 01 shown is a thin-walled channel-shaped profile, and the side wall 01 lacks rigid support and is prone to collapse and deformation.

[0007] In the above-mentioned cases, even if the rectangular pad 05 is filled in the groove of the groove-shaped profile, the clamping force of the upper clamp plate 03 and the lower clamp plate 04 will mostly act on the rectangular pad 05 and the bottom beam 02. At this time, the friction force of the stretching straightening method is mainly concentrated on the fitting surface of the lower clamp plate 04 and the pad 05 and the bottom beam 02, resulting in serious uneven force on the groove-shaped profile and inability to perform effective straightening.

[0008] In particular, if Figure 5 For the channel profile shown, the following will occur Fig. 9 Tilt in the direction shown cannot achieve straightening effect.

[0009] Therefore, how to achieve effective stretching and straightening of grooved profiles has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0010] In view of this, the present invention provides a stretching and straightening device to achieve effective stretching and straightening of grooved profiles.

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] A stretching and straightening device comprises a stretching head, wherein the stretching head can clamp a grooved profile.

[0013] The stretching head comprises:

[0014] An upper clamp plate, wherein one side of the upper clamp plate that matches the notch of the grooved profile is a flat surface;

[0015] A lower nipper plate, parallel to the upper nipper plate, the lower nipper plate is provided with a groove having the same shape as the groove profile, and the groove profile can be embedded in the groove;

[0016] A pad block, wherein the pad block can be filled in the groove of the groove profile, the side wall of the pad block can be abutted against the groove wall of the groove, the bottom wall of the pad block can be abutted against the groove bottom of the groove, and the top wall of the pad block can be abutted against the upper clamp plate.

[0017] Preferably, in the above-mentioned stretching and straightening equipment, the cushion block includes a first cushion block, a second cushion block and a third cushion block.

[0018] The first cushion block is located in the middle of the groove bottom, the length extension direction of the first cushion block is consistent with the length extension direction of the groove profile, a first side of the length direction of the first cushion block is provided with a first inclined surface, and a second side of the length direction of the first cushion block is provided with a second inclined surface;

[0019] The second pad is located on the first side of the first pad, the length extension direction of the second pad is consistent with the length extension direction of the groove profile, the first side of the length direction of the second pad is provided with a third inclined surface having the same inclination angle as the first groove wall of the groove, the second side of the length direction of the second pad is provided with a fourth inclined surface that is in contact with the first inclined surface of the first pad, and the top surface of the second pad is a first plane that is in contact with the upper clamp plate;

[0020] The third pad is located on the second side of the first pad, and the length extension direction of the third pad is consistent with the length extension direction of the groove profile. The first side of the length direction of the third pad is provided with a fifth inclined surface that is in contact with the second inclined surface of the first pad, and the second side of the length direction of the third pad is provided with a sixth inclined surface with the same inclination angle as the second groove wall of the groove profile. The top surface of the third pad is a second plane that is in contact with the upper clamp plate.

[0021] Preferably, in the above-mentioned stretching and straightening equipment, the length of the first cushion block is 200-400 mm;

[0022] The length of the second cushion block is 200-400 mm;

[0023] The length of the third cushion block is 200-400 mm.

[0024] Preferably, the above-mentioned stretching and straightening equipment further includes an adjustment component for adjusting the vertical distance between the upper nipper plate and the lower nipper plate.

[0025] Preferably, in the above-mentioned stretching and straightening equipment, the adjustment component comprises:

[0026] a first sliding block, wherein the lower end surface of the first sliding block is a third plane and is fixedly connected to the upper clamp plate, and the upper end surface of the first sliding block is a seventh inclined surface;

[0027] a second slider, wherein the upper end surface of the second slider is a fourth plane and is fixedly connected to the lower clamp plate, and the lower end surface of the second slider is an eighth inclined surface, and the eighth inclined surface has the same inclination angle as the seventh inclined surface, and has an opposite inclination direction;

[0028] a first guide base, wherein the lower end surface of the first guide base is a ninth inclined surface that is in contact with the seventh inclined surface, the first guide base is slidably matched with the first sliding block, and the first guide base is a fixed base;

[0029] The second guide base, the upper end surface of the second guide base is a tenth inclined surface that fits the eighth inclined surface, the second guide base is slidably matched with the second sliding block, and the second guide base is a fixed base.

[0030] Preferably, in the above-mentioned stretching and straightening equipment, the first sliding block is clamped and connected to the upper clamp plate;

[0031] The second sliding block is clamped and connected to the lower clamp plate.

[0032] Preferably, in the above-mentioned stretching and straightening equipment, the first slider is provided with a first push head for pushing the first slider to move;

[0033] The second sliding block is provided with a second pushing head for pushing the second sliding block to move.

[0034] Preferably, in the above-mentioned stretching and straightening equipment, the length of the upper clamp is 300-800 mm;

[0035] The length of the lower clamp plate is 300-800 mm.

[0036] Preferably, in the above-mentioned stretching and straightening equipment, the thickness of the lower nipper at the position corresponding to the bottom of the groove is at least 40 mm, and the thickness of the side wall of the lower nipper is at least 50 mm.

[0037] Preferably, in the above-mentioned stretching and straightening equipment, the upper nipper is a steel upper nipper, and the lower nipper is a steel lower nipper.

[0038] It can be seen from the above technical scheme that the stretching and straightening equipment provided by the present invention includes a stretching head, and the number of the stretching heads is two, which are respectively matched with the ends of the groove profile. The stretching head includes an upper clamp plate, a lower clamp plate and a pad block. In this scheme, a groove with the same shape as the groove profile is opened on the lower clamp plate, and the groove profile can be embedded in the groove. The side wall of the groove effectively supports the side wall of the groove profile to prevent the side wall from tilting outward during the stretching process of the groove profile. During the stretching and straightening process, the upper clamp plate is pressed against the top wall of the pad block, and the bottom wall of the pad block is fitted with the bottom beam of the groove profile. At the same time, the bottom of the groove of the lower clamp plate is fitted with the bottom beam of the groove profile. During the stretching and straightening process, the entire cross-section of the groove profile is evenly stressed, which can achieve effective stretching and straightening of the groove profile, so as to eliminate the defects that the curvature and torsion of the groove profile do not meet the technical requirements, and reduce or eliminate the quenching residual stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1It is a schematic diagram of the structure of the channel-shaped profile with the side wall and the bottom beam at right angles;

[0041] Figure 2 It is a schematic diagram of the structure of a channel-shaped profile with a side wall inclined outward at a small angle;

[0042] Figure 3 It is a structural schematic diagram of a channel-shaped profile with left and right side walls of equal height and side walls inclined outward at a large angle;

[0043] Figure 4 It is a schematic diagram of the structure of a channel-shaped profile whose top surface is not parallel to the clamping surface of the nipper;

[0044] Figure 5 It is a structural schematic diagram of the trough profile with unequal heights on the left and right side walls;

[0045] Figure 6 It is a schematic diagram of the structure of the channel-shaped profile with thin side walls;

[0046] Figure 7 It is a schematic diagram of the structure of the stretching and straightening of the grooved profile with a smaller width in the prior art;

[0047] Figure 8 It is a schematic diagram of the structure of the stretching and straightening of the grooved profile with a larger width in the prior art;

[0048] Fig. 9 It is a schematic diagram of the structure in which the side wall tilts outwards during stretching and straightening in the prior art;

[0049] Fig.10 A schematic structural diagram of a stretching and straightening device provided in an embodiment of the present invention;

[0050] Fig.11 This is a left view of the stretching and straightening device provided in an embodiment of the present invention.

[0051] in,

[0052] 01, side wall, 02, bottom beam, 03, upper clamp plate, 04, lower clamp plate, 05, pad,

[0053] 1. Upper clamp plate, 2. Lower clamp plate, 3. Cushion block, 31. First cushion block, 32. Second cushion block, 33. Third cushion block, 4. First slider, 5. Second slider, 6. First guide base, 7. Second guide base, 8. First push head, 9. Second push head. DETAILED DESCRIPTION

[0054] The invention discloses a stretching and straightening device to achieve effective stretching and straightening of a grooved profile.

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] The invention discloses a stretching and straightening device which is suitable for the stretching and straightening of large-size grooved profiles.

[0057] Large-size trough profiles refer to trough profiles produced by large or heavy extruders of 5,000 tons or more. This solution is applicable to trough profiles whose width is not less than twice the height of the trough profiles, specifically, their maximum width is above 300mm, the maximum height is above 80mm, and the minimum thickness is preferably 10-100mm.

[0058] The present invention is applicable to trough-shaped profiles with side walls inclined outward at a large angle, trough-shaped profiles with side walls of unequal height, trough-shaped profiles with inclined top surfaces, and trough-shaped profiles with thin side walls. Among them, the angle between the side wall of the trough-shaped profile with a large outward angle and the vertical direction is greater than 15 degrees.

[0059] The grooved profiles applicable to the stretching and straightening equipment disclosed in the present scheme are preferably applied to aluminum alloy grooved profiles and magnesium alloy grooved profiles.

[0060] The stretching and straightening equipment disclosed in the present solution is not only applicable to trough-shaped profiles with symmetrical side walls of equal height, but also applicable to trough-shaped profiles with unequal height and / or asymmetrical side walls.

[0061] like Figure 1-10 As shown, the trough profile includes a first side wall, a second side wall and a bottom beam, wherein the bottom beam is used to connect the first side wall and the second side wall and is located between the first side wall and the second side wall. The lower end surfaces of the first side wall and the second side wall are coplanar with the bottom surface of the bottom beam, and the bottom surface of the bottom beam is also the bottom surface of the trough profile.

[0062] Specifically, the first side wall and the second side wall may be of equal height or unequal height. When the first side wall and the second side wall are of equal height and symmetrical, the top surface of the first side wall is coplanar with the top surface of the second side wall. When the first side wall and the second side wall are of unequal height or asymmetrical, the top surface of the first side wall is not coplanar with the top surface of the second side wall.

[0063] The thickness of the first side wall may be the same as or different from the thickness of the second side wall;

[0064] The top surfaces of the first side wall and the second side wall may be parallel to the bottom surface of the groove profile, or may not be parallel to the bottom surface of the groove profile.

[0065] The stretching and straightening device disclosed in the present solution includes a stretching head, which can clamp the groove profile. Specifically, there are two stretching heads, which are respectively used to clamp the two ends of the groove profile.

[0066] The stretching head disclosed in the present solution comprises an upper clamp plate 1, a lower clamp plate 2 and a cushion block 3.

[0067] The upper nipper plate 1 is matched with the notch of the grooved profile, and one side of the upper nipper plate 1 matched with the notch of the grooved profile is a plane.

[0068] The lower nipper plate 2 is parallel to the upper nipper plate 1, and a groove having the same shape as the groove profile is formed on the lower nipper plate 2, and the groove profile can be inserted into the groove. The groove profile is placed into the groove of the lower nipper plate 2 with the bottom facing downward and the groove facing upward, and the outer wall of the groove profile can effectively fit with the groove of the lower nipper plate 2.

[0069] Specifically, the outer wall of the side wall of the groove profile and the bottom wall of the bottom beam of the groove profile can be against the groove wall of the groove, and the side wall of the groove can play an effective supporting and limiting role on the side wall of the groove profile, thereby preventing the side wall from deflecting outward during the stretching and straightening process of the groove profile. The bottom wall of the groove contacts the bottom beam of the groove profile, and friction is generated between the bottom beam of the groove profile, thereby providing friction for the stretching and straightening of the groove profile.

[0070] The pad 3 can be filled in the groove of the groove profile, the side wall of the pad 3 can be against the groove wall of the groove, and the side wall of the groove profile is pressed between the side wall of the pad 3 and the groove side wall of the lower clamp plate 2, the bottom wall of the pad 3 can be against the groove bottom of the groove, and provide friction for the tensile straightening of the groove profile, and the top wall of the pad 3 can be against the upper clamp plate 1. Preferably, the top wall height of the pad 3 is at least 10mm higher than the side wall of the groove profile with a higher height, preferably 20-80mm, so that in the tensile straightening process of the groove profile, the upper clamp plate 1 can be against the top wall of the pad 3, and provide friction for the tensile straightening of the profile.

[0071] The depth of the groove of the lower nipper plate 2 is equal to the total height of the channel profile. The groove is continuous along the length extension direction of the lower nipper plate 2 and is arranged with equal cross-section.

[0072] The stretching and straightening equipment provided in this scheme includes a stretching head, and the number of the stretching heads is two, and they are respectively matched with the ends of the groove profile. The stretching head includes an upper clamp plate 1, a lower clamp plate 2 and a pad 3. In this scheme, a groove with the same shape as the groove profile is opened on the lower clamp plate 2, and the groove profile can be embedded in the groove. The side wall of the groove effectively supports the side wall of the groove profile to prevent the side wall from tilting outward during the stretching process of the groove profile. During the stretching and straightening process, the upper clamp plate 1 is pressed against the top wall of the pad 3, and the bottom wall of the pad 3 is fitted with the bottom beam of the groove profile. At the same time, the bottom of the groove of the lower clamp plate 2 is fitted with the bottom beam of the groove profile. During the stretching and straightening process, the entire cross-section of the groove profile is evenly stressed, and effective stretching and straightening of the groove profile can be achieved to eliminate the defects that the curvature and torsion of the groove profile do not meet the technical requirements, and reduce or eliminate quenching residual stress.

[0073] In order to further enhance the friction between the upper nipper plate 1 and the cushion block 3 and the side wall of the groove profile, in the present solution, milled teeth for enhancing the friction are arranged on the lower plane of the upper nipper plate 1 .

[0074] A clamping section is provided at both ends of the groove profile in a suitable length range along the length direction, and the length and position of the clamping section are optional. For large-size profiles, the length of the clamping end is preferably 300-800 mm. The cushion block 3 is placed in the clamping section area.

[0075] The clamping section of the grooved profile is located between the upper clamp plate 1 and the lower clamp plate 2 of the stretching head.

[0076] The cushion block 3 may be an integral cushion block 3 or a combination of multiple cushion blocks 3 .

[0077] In the first embodiment of the present scheme, the cushion block 3 is an integral cushion block 3, and the shape of the cushion block 3 is the same as the shape of the groove of the lower clamp plate 2, but the size is smaller than the groove of the groove profile, and the cushion block 3 can be embedded in the groove of the groove profile.

[0078] In the second embodiment of the present solution, the cushion block 3 includes three small cushion blocks 3 , specifically, the cushion block 3 includes a first cushion block 31 , a second cushion block 32 and a third cushion block 33 .

[0079] The first cushion block 31 is located in the middle of the groove bottom, and the length extension direction of the first cushion block 31 is consistent with the length extension direction of the groove profile. A first inclined surface is provided on a first side of the length direction of the first cushion block 31, and a second inclined surface is provided on a second side of the length direction of the first cushion block 31;

[0080] The second cushion block 32 is located on the first side of the first cushion block 31, and the length extension direction of the second cushion block 32 is consistent with the length extension direction of the groove profile. The first side of the length direction of the second cushion block 32 is provided with a third inclined surface having the same inclination angle as the first groove wall of the groove, and the second side of the length direction of the second cushion block 32 is provided with a fourth inclined surface that fits with the first inclined surface of the first cushion block 31, and the top surface of the second cushion block 32 is a first plane that fits with the upper clamp plate 1;

[0081] The third pad 33 is located on the second side of the first pad 31, and the length extension direction of the third pad 33 is consistent with the length extension direction of the groove profile. The first side of the length direction of the third pad 33 is provided with a fifth inclined surface that fits with the second inclined surface of the first pad 31, and the second side of the length direction of the third pad 33 is provided with a sixth inclined surface with the same inclination angle as the second groove wall of the groove profile. The top surface of the third pad 33 is a second plane that fits with the upper clamp plate 1.

[0082] The bottom width of the first cushion block 31 is smaller than the bottom width of the groove of the groove profile. Preferably, the bottom width of the first cushion block 31 is 0-30 mm smaller than the bottom width of the groove of the groove profile.

[0083] During installation, first install the first pad 31 in the middle of the bottom of the groove, then place the second pad 32 in the groove of the groove profile, the third inclined surface of the second pad 32 fits with the first groove wall of the groove profile, the fourth inclined surface of the second pad 32 fits with the first inclined surface of the first pad 31, and finally place the third pad 33 in the groove of the groove profile, the fifth inclined surface of the third pad 33 fits with the second inclined surface of the first pad 31, the sixth inclined surface of the third pad 33 fits with the second groove wall of the groove profile, and the top surface of the third pad 33 is flush with the top surface of the second pad 32.

[0084] The second cushion block 32 and the third cushion block 33 can slide relative to each other appropriately when clamped, so that the top surfaces of the second cushion block 32 and the third cushion block 33 can contact the upper clamp plate 1 at the same time, thereby ensuring uniform force.

[0085] After the upper clamp plate 1 is matched with the groove profile, the lower end surface of the upper clamp plate 1 is pressed tightly against the top surfaces of the second cushion block 32 and the third cushion block 33 .

[0086] The cushion block 3 is designed to be split so that the lower cushion block 3 can be combined, so that it is suitable for straightening the groove profiles with different side wall inclination angles, which provides the versatility of the cushion block 3 to a certain extent.

[0087] In a specific embodiment of the present solution, the lengths of the first cushion block 31, the second cushion block 32 and the third cushion block 33 are equal, and the lengths are all 200-400 mm.

[0088] The material of the first cushion block 31 , the second cushion block 32 and the third cushion block 33 may be consistent with the material of the straightened channel-shaped profile, or may be made of stainless steel material with relatively high hardness.

[0089] In order to further optimize the above technical solution, the stretching and straightening equipment disclosed in this solution also includes an adjustment component.

[0090] The adjustment component is used to adjust the vertical distance between the upper nipper plate 1 and the lower nipper plate 2 to improve the versatility of the stretching and straightening equipment, so that the stretching and straightening equipment can be applied to the stretching and straightening of grooved profiles of different thicknesses.

[0091] In a specific embodiment of the present solution, the adjustment assembly includes a first slider 4 , a second slider 5 , a first guide base 6 and a second guide base 7 .

[0092] The first guide base 6 and the second guide base 7 are both fixed bases. The first guide base 6 and the second guide base 7 do not move during the stretching and straightening process, and the relative position between the first guide base 6 and the second guide base 7 is fixed.

[0093] The first slider 4 and the second slider 5 are respectively slidable relative to the first guide base 6 and the second guide base 7 .

[0094] like Fig.11 As shown, the first slide block 4 and the first guide base 6 are located at the top, and the second slide block 5 and the second guide base 7 are located at the bottom.

[0095] The lower end face of the first slider 4 that matches the upper clamp 1 is a plane, the upper end face of the first slider 4 that matches the first guide base 6 is a seventh inclined face, and a ninth inclined face having the same inclination angle as the seventh inclined face is provided on the first guide base 6. The first slider 4 can slide relative to the first guide base 6.

[0096] The upper end surface of the second slider 5 that cooperates with the lower nipper plate 2 is a plane, and the lower end surface of the second slider 5 that cooperates with the second guide base 7 is an eighth inclined surface. The second guide base 7 is provided with a tenth inclined surface having the same inclination angle as the eighth inclined surface. The second slider 5 can slide relative to the second guide base 7, and the sliding direction of the second slider 5 is opposite to the sliding direction of the first slider 4, so that the first slider 4 and the second slider 5 can slide synchronously in the same direction in the horizontal direction.

[0097] like Fig.11 As shown, the first slider 4 is tilted upward, and the second slider 5 is tilted downward. When the first slider 4 moves obliquely upward and the second slider 5 moves obliquely downward, the vertical distance between the upper nipper plate 1 and the lower nipper plate 2 increases; when the first slider 4 moves obliquely downward and the second slider 5 moves obliquely upward, the distance between the upper nipper plate 1 and the lower nipper plate 2 decreases.

[0098] In order to enable the first slider 4 and the second slider 5 to slide stably along the first guide base 6 and the second guide base 7, the present solution provides a guide rail structure on the mating surface between the first slider 4 and the first guide base 6, and on the mating surface between the second slider 5 and the second guide base 7, or provides a guide groove structure on the mating surface between the first slider 4 and the first guide base 6, and on the mating surface between the second slider 5 and the second guide base 7, so that the first slider 4 and the second slider 5 can slide stably.

[0099] The first slider 4 is fixedly connected to the upper nipper plate 1 by a clamping connection, so that the first slider 4 and the upper nipper plate 1 can move synchronously without relative movement during the synchronous movement.

[0100] The second slider 5 and the lower nipper plate 2 are fixedly connected by a snap connection, and the second slider 5 and the lower nipper plate 2 are fixedly connected so that the second slider 5 and the lower nipper plate 2 can move synchronously without any relative movement during the synchronous movement.

[0101] The first slide block 4 and the upper clamp plate 1 may also be fixed in a bolted manner.

[0102] The second slide block 5 and the lower nipper plate 2 may also be fixed in a bolted manner.

[0103] The movement of the first slider 4 and the second slider 5 can be realized by manual operation. In order to reduce the difficulty of the movement of the first slider 4 and the second slider 5, the first slider 4 is provided with a first pusher head 8, and the second slider 5 is provided with a second pusher head 9, and the first slider 4 and the second slider 5 are pushed or pulled by the first pusher head 8 and the second pusher head 9 respectively to move.

[0104] The first push head 8 and the second push head 9 are connected to the first slide block 4 and the second slide block 5 respectively by bolts, or the first push head 8 and the second push head 9 are connected to the first slide block 4 and the second slide block 5 respectively by welding.

[0105] In a specific embodiment of the present solution, the length of the lower clamp plate 2 is 300-800 mm.

[0106] In a specific embodiment of the present solution, the length of the upper clamp plate 1 is also 300-800 mm.

[0107] In order to ensure the use strength of the lower nipper plate 2, in this solution, the thickness of the lower nipper plate 2 at the position corresponding to the groove bottom of the groove is at least 40 mm, and the thickness of the side wall of the lower nipper plate 2 is at least 50 mm.

[0108] In a specific embodiment of the present solution, the upper nipper plate 1 is a steel upper nipper plate, and the lower nipper plate 2 is a steel lower nipper plate.

[0109] The specific stretch straightening steps are as follows:

[0110] The upper slider and the lower slider are pushed toward the end of the groove profile by the first pusher 8 and the second pusher 9, so that the opening between the upper clamp plate 1 and the lower clamp plate 2 is increased until the groove profile and the spacer block 3 can be placed therein;

[0111] Place the grooved profile into the groove of the lower clamp plate 2 with the bottom surface facing downward and the groove facing upward;

[0112] Place the first spacer 31 near the center of the groove of the groove profile;

[0113] The second pads 32 are placed in the V-shaped notches formed by the groove of the groove profile and the first pads 31, and the inclined surfaces on both sides of the second pads 32 are respectively in contact with the inner side of the side wall of the groove profile and the first inclined surface of the first pads 31;

[0114] Similarly, the third pad 33 is placed, and the upper surfaces of both sides of the third pad 33 are respectively in contact with the inner side of the side wall of the groove profile and the second inclined surface of the first pad 31;

[0115] Adjust the relative positions of the first cushion block 31, the second cushion block 32 and the third cushion block 33 so that the top surfaces of the second cushion block 32 and the third cushion block 33 are substantially maintained in the same plane;

[0116] The first slider 4 and the second slider 5 are moved toward the middle of the length direction of the groove profile by the first pusher 8 and the second pusher 9, so that the opening between the upper clamp plate 1 and the lower clamp plate 2 is reduced until the groove profile and the pad 3 are completely clamped. The force acting on the top surface of the second pad 32 and the third pad 33, under the decomposition and conduction of the inclined surfaces of the first pad 31, the second pad 32 and the third pad 33, generates pressure perpendicular to their own bonding surfaces at the first bonding surface, the second bonding surface and the third bonding surface of the groove of the groove profile of the first pad 31, the second pad 32 and the third pad 33, and these pressures form a clamping force on the bottom beam and the side wall of the groove profile. Under the action of this clamping force, when stretched, sufficient friction will be generated between the bottom and side surfaces of the groove profile and the groove of the lower clamp plate 2, through which a tensile force in the longitudinal direction is generated, thereby achieving tensile straightening of the groove of the profile.

[0117] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stretching and straightening device, characterized in that: comprising a stretching head capable of clamping the channel profile, The stretching head comprises: An upper clamp plate (1), wherein one side of the upper clamp plate (1) that cooperates with the notch of the grooved profile is a flat surface; A lower clamp plate (2) is parallel to the upper clamp plate (1), and a groove having the same shape as the groove profile is formed on the lower clamp plate (2), and the groove profile can be embedded in the groove; A cushion block (3), wherein the cushion block (3) can be filled in the groove of the groove-shaped profile, the side wall of the cushion block (3) can abut against the groove wall of the groove, the bottom wall of the cushion block (3) can abut against the groove bottom of the groove, and the top wall of the cushion block (3) can abut against the upper clamp plate (1); The cushion block (3) comprises a first cushion block (31), a second cushion block (32) and a third cushion block (33), The first cushion block (31) is located in the middle of the groove bottom, the length extension direction of the first cushion block (31) is consistent with the length extension direction of the groove profile, a first side of the length direction of the first cushion block (31) is provided with a first inclined surface, and a second side of the length direction of the first cushion block (31) is provided with a second inclined surface; The second pad (32) is located on a first side of the first pad (31); the length extension direction of the second pad (32) is consistent with the length extension direction of the groove profile; the first side of the length direction of the second pad (32) is provided with a third inclined surface having the same inclination angle as the first groove wall of the groove; the second side of the length direction of the second pad (32) is provided with a fourth inclined surface that is in contact with the first inclined surface of the first pad (31); and the top surface of the second pad (32) is a first plane that is in contact with the upper clamp plate (1); The third pad (33) is located on the second side of the first pad (31); the length extension direction of the third pad (33) is consistent with the length extension direction of the groove profile; the first side of the length direction of the third pad (33) is provided with a fifth inclined surface that is in contact with the second inclined surface of the first pad (31); the second side of the length direction of the third pad (33) is provided with a sixth inclined surface that has the same inclination angle as the second groove wall of the groove profile; and the top surface of the third pad (33) is a second plane that is in contact with the upper clamp plate (1); It also comprises an adjustment component for adjusting the vertical distance between the upper clamp plate (1) and the lower clamp plate (2).

2. The stretching and straightening equipment according to claim 1, characterized in that: The length of the first cushion block (31) is 200-400 mm; The length of the second cushion block (32) is 200-400 mm; The length of the third cushion block (33) is 200-400 mm.

3. The stretching and straightening equipment according to claim 1, characterized in that: The adjustment component comprises: A first sliding block (4), wherein the lower end surface of the first sliding block (4) is a third plane and is fixedly connected to the upper clamp plate (1), and the upper end surface of the first sliding block (4) is a seventh inclined surface; A second sliding block (5), the upper end surface of the second sliding block (5) being a fourth plane and being fixedly connected to the lower clamp plate (2), the lower end surface of the second sliding block (5) being an eighth inclined surface, the eighth inclined surface having the same inclination angle as the seventh inclined surface and an opposite inclination direction; A first guide base (6), wherein the lower end surface of the first guide base (6) is a ninth inclined surface that is in contact with the seventh inclined surface, the first guide base (6) is slidably matched with the first sliding block (4), and the first guide base (6) is a fixed base; A second guide base (7), the upper end surface of the second guide base (7) is a tenth inclined surface that fits the eighth inclined surface, the second guide base (7) is slidably matched with the second slider (5), and the second guide base (7) is a fixed base.

4. The stretching and straightening equipment according to claim 3, characterized in that: The first sliding block (4) is connected to the upper clamp plate (1) by clamping; The second sliding block (5) is clamped and connected to the lower clamp plate (2).

5. The stretching and straightening equipment according to claim 3, characterized in that: The first slider (4) is provided with a first pusher head (8) for pushing the first slider (4) to move; The second sliding block (5) is provided with a second pushing head (9) for pushing the second sliding block (5) to move.

6. The stretching and straightening equipment according to claim 1, characterized in that: The length of the upper clamp plate (1) is 300-800 mm; The length of the lower clamp plate (2) is 300-800 mm.

7. The stretching and straightening equipment according to claim 1, characterized in that: The thickness of the lower nipper plate (2) at a position corresponding to the groove bottom of the groove is at least 40 mm, and the thickness of the side wall of the lower nipper plate (2) is at least 50 mm.

8. The stretching and straightening equipment according to claim 1, characterized in that: The upper clamp plate (1) is a steel upper clamp plate, and the lower clamp plate (2) is a steel lower clamp plate.

Images