Pressing mechanism and tool clamp

Abstract

The utility model discloses a hold-down mechanism and a work fixture, which comprise at least one hold-down assembly, and at least part of the hold-down assembly is provided with a hold-down part; the first connecting piece is rotationally connected with the pressing assembly through first rotating shafts, a first rotating fixed point is arranged on the first connecting piece, the two first rotating shafts and the two first rotating fixed points form a parallelogram structure, and the first connecting piece rotates around the first rotating fixed point so as to adjust the distance between the pressing assembly and the first rotating fixed point; the height of the pressing part is further adjusted, and the pressing part is matched with the limiting face used for supporting the bottom of the workpiece so that the workpiece can be pressed, namely downward pressing in the vertical direction can be achieved. The pressing part is arranged at the end of the pressing assembly, so that when the parallelogram deforms in parallel, the motion trail of the pressing part is in an arc-shaped downward shape, and the pressing part is matched with a lateral limiting face to achieve pressing of a workpiece in the horizontal direction, that is, the acting force of the pressing part is obliquely downward, and pressing in the horizontal lateral direction can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of workpiece's compression mechanism, concretely relates to a compression mechanism and frock clamp. BACKGROUND

[0002] Clamp is used for the quick, convenient, safe installation workpiece, and welding clamp is the device for fixing the processing object in the processing process, makes it in the correct position, to guarantee under the high temperature condition welding piece reaches the size, shape etc. required, its good and bad directly influence the size and shape precision of welding piece height. In the door frame welding production process of steel door, security door etc. product, because the length and width size of the steel plate used is far greater than the thickness of the steel plate, it is easy to deform in the welding process, for example, china utility model patent, CN201632795 《door frame welding clamp》 its can realize the clamping in horizontal direction, but cannot be compressed in the thickness direction, therefore the height difference between two steel plates that need to be welded exists, influence the yield of welding finished product, therefore it is very important to obtain a compression mechanism and frock clamp that overcome the above-mentioned defects. SUMMARY

[0003] To solve at least one of the above technical problems, on the one hand, the utility model provides a compression mechanism, comprising:

[0004] At least one compression assembly, at least part of the compression assembly is provided with a compression part;

[0005] At least two first connecting pieces, the first connecting piece is rotatably connected with the compression assembly through a first rotating shaft, the first connecting piece is provided with a first rotating fixed point, two first rotating shafts and two first rotating fixed points form a parallelogram structure, the first connecting piece rotates with the first rotating fixed point to adjust the distance between the compression assembly and the first rotating fixed point, and then adjust the height of the compression part, cooperate with the limiting surface for supporting the bottom of the workpiece, to realize the tight compression of the workpiece, that is, the downward compression in the vertical direction can be realized.

[0006] At least one compression part is arranged at the end of the compression assembly, so that when the parallelogram parallel deformation, the movement trajectory of the compression part is arc downward, cooperate with a lateral limiting surface, to realize the horizontal compression of the workpiece, that is, the force of the compression part is obliquely downward, which can realize the horizontal lateral compression.

[0007] Through the above technical scheme, the utility model can realize multi-directional clamping, and the horizontal height of two plate materials that need to be welded is consistent without height difference, so that the yield of welding finished product is increased.

[0008] The compression assembly comprises a compression rod and an adapter block fixed with the compression rod, the adapter block is at least partially shaped to adapt to the workpiece, and the first connecting piece is arranged on the compression rod.

[0009] The second connecting piece is fixedly arranged, and the first connecting piece is rotationally connected with the second connecting piece through a second rotating shaft, and the second rotating shaft forms the first rotating fixed point.

[0010] The driving mechanism is further connected with a second rotating fixed point.

[0011] According to the technical scheme, the driving mechanism is outputted to be elongated to control the first connecting piece to be horizontally downward, and then the pressing part at the end is arc downward to realize downward pressing and outward pushing.

[0012] In another aspect, the utility model provides a tool fixture, including at least one clamping station, at least one workpiece placing area is equipped on the clamping station, at least one above -mentioned pressing mechanism, at least one first pressing piece, at least one first limiting portion, at least one second pressing piece, at least one second limiting portion are equipped on the clamping station, the first pressing piece and the first limiting portion are equipped on the opposite side outside the workpiece placing area, the second pressing piece and the second limiting portion are equipped on the opposite side outside the workpiece placing area, and when the first pressing piece and the second pressing piece act, the workpiece is in contact with the first limiting portion and the second limiting portion to realize the force balance of the circumferential side of the workpiece and is clamped by limiting;

[0013] The pressing mechanism acts on the workpiece in the thickness direction to realize the limiting of the workpiece in the thickness direction.

[0014] The pressing mechanism is arranged in the workpiece placing area, a third limiting portion is arranged on the workpiece, and when the pressing mechanism is arc downward, it acts on the workpiece in the thickness direction and acts on the third limiting portion obliquely downward to make the workpiece in contact with the first pressing piece, or the second pressing piece, or the first limiting portion, or the second limiting portion.

[0015] Further comprising a first limiting block, at least part of a side surface of the first limiting block close to the workpiece placing area forms the first limiting portion; further comprising a second limiting block, at least part of a side surface of the second limiting block close to the workpiece placing area forms the second limiting portion; further comprising an L-shaped limiting block, two side surfaces of the L-shaped limiting block close to the workpiece placing area form the first limiting portion and / or the second limiting portion.

[0016] The pressing mechanism is provided with two, and acts on the upper and lower ends of the same side of the workpiece. Two L-shaped limiting blocks cooperate with the adapter block of the pressing mechanism, that is, at least part of the shape of the adapter block is L-shaped convex to cooperate with the groove part of the L-shaped limiting block, so as to clamp and limit the third limiting portion between the adapter block and the first limiting portion and / or between the adapter block and the second limiting portion.

[0017] The workbench is provided with a first sliding slot, and the first limiting block is adjustably fixed on the first sliding slot through the first sliding slot.

[0018] The first pressing member and the second pressing member are air cylinders, and two of each are fixed on the workbench.

[0019] The sliding slot can be adapted to the clamping and fixing of door frames of various lengths, widths and heights during welding.

[0020] Compared with the prior art, the welding device has the advantages that the structure is simple, the welding device can be adapted to the welding of door frames of different specifications, the height difference between two pipe materials during welding can be avoided, the welding efficiency is increased, and the production cost is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective view of the pressing mechanism of the utility model;

[0022] Figure 2 It is a side view of the pressing mechanism of the utility model in use;

[0023] Figure 3 It is a perspective view of the tool fixture of the utility model;

[0024] Figure 4 It is a sectional view of the utility model in use;

[0025] REFERENCE NUMERALS:

[0026] 1, pressing mechanism; 101, pressing assembly; 1011, pressing rod; 1012, adapter block; 1013, pressing part; 102, first connecting piece; 103, first rotating shaft; 104, first rotating fixed point; 105, second connecting piece; 106, second rotating shaft;

[0027] 2, driving mechanism; 201, third rotating shaft; 202, second rotating fixed point; 203, third connecting piece; 204, fourth connecting piece; 205, fourth rotating shaft; 206, fifth connecting piece;

[0028] 301, limiting surface for supporting the bottom of the workpiece; 302, lateral limiting surface;

[0029] 4, workpiece; 401, third limiting part;

[0030] 5workbench; 501 clamping station; 502 workpiece placement area; 503 first pressing member; 504 first limiting block; 505 first limiting portion; 506 second limiting block; 507 second limiting portion; 508 L-shaped limiting block; 509 first sliding groove; 510 second sliding groove; 511 fixed plate; 512 second pressing member;

[0031] 6gap. DETAILED DESCRIPTION

[0032] In order to make the person skilled in the art better understand the utility model, so as to make the scope of the utility model claimed more clearly limited, the utility model is described in detail below according to some specific embodiments of the utility model. It should be noted that the following is only some specific embodiments of the utility model concept, and only a part of the embodiments of the utility model, and the specific and direct description of the related structure is only for the convenience of understanding the utility model, and each specific feature does not limit the implementation range of the utility model directly and naturally.

[0033] Referring to the drawings, the utility model adopts the following technical scheme, on the one hand, the utility model provides a pressing mechanism 1, comprising:

[0034] At least one pressing assembly 101, at least part of the pressing assembly 101 is provided with a pressing portion 1013;

[0035] At least two first connecting pieces 102, the first connecting piece 102 is rotationally connected with the pressing assembly 101 through a first rotating shaft 103, the first connecting piece 102 is provided with a first rotation fixed point 104, two first rotating shafts 103 and two first rotation fixed points 104 form a parallelogram structure, the first connecting piece 102 rotates with the first rotation fixed point 104, to adjust the distance between the pressing assembly 101 and the first rotation fixed point 104, and then adjust the height of the pressing portion 1013, cooperate with the limiting surface 301 for supporting the bottom of the workpiece, to realize the tight pressing of the workpiece 4, that is, the downward pressing in the vertical direction can be realized.

[0036] At least one pressing portion 1013 is arranged at the end of the pressing assembly 101, so that when the parallelogram parallel deformation occurs, the movement track of the pressing portion 1013 is arc-shaped downward, cooperating with a lateral limiting surface 302, to realize the horizontal pressing of the workpiece 4, that is, the acting force of the pressing portion 1013 is obliquely downward, and the horizontal lateral pressing can be realized.

[0037] Through the above technical scheme, the utility model can realize multi-directional clamping, and the horizontal height of two plate materials to be welded is consistent without height difference, thereby increasing the yield of welding finished products.

[0038] The pressing assembly 101 comprises a pressing rod 1011 and an adapter block 1012 fixed with the pressing rod 1011, the adapter block 1012 is at least partially shaped to adapt to the workpiece 4, and the first connecting piece 102 is arranged on the pressing rod 1011.

[0039] In the embodiment, the first connecting piece 102 is provided with four, which are divided into two groups and arranged on both sides of the pressing rod 1011. The adapter block 1012 is connected with the pressing rod 1011 by fasteners, wherein a plurality of mounting holes can be linearly arranged on the pressing rod 1011 and the adapter block 1012, and the length adjustment between the pressing rod 1011 and the adapter block 1012 can be realized by connecting different mounting holes through fasteners.

[0040] Further comprising a second connecting piece 105, the second connecting piece 105 is fixedly arranged, the first connecting piece 102 is rotationally connected with the second connecting piece 105 through a second rotating shaft 106, and the center of the second rotating shaft 106 forms the first rotating fixed point 104.

[0041] Further comprising a driving mechanism 2, an output end of the driving mechanism 2 is rotationally connected with the pressing assembly 101 through a third rotating shaft 201, and the driving mechanism 2 is connected with a second rotating fixed point 202.

[0042] Further comprising a third connecting piece 203 fixedly arranged, the driving mechanism 2 is fixedly connected with a fourth connecting piece 204, the fourth connecting piece 204 and the third connecting piece 203 are rotationally connected through a fourth rotating shaft 205, the center of the fourth rotating shaft 205 forms the second rotating fixed point 202, the output end of the driving mechanism 2 is fixedly connected with a fifth connecting piece 206, and the fifth connecting piece 206 is connected with the pressing rod 1011 through the third rotating shaft 201. The driving mechanism 2 can be a driving cylinder, or an electric telescopic rod, or an electric linear guide rail, the electric linear guide rail is fixedly connected with the fourth connecting piece 204, and a sliding block thereof is rotationally connected with the pressing rod 1011.

[0043] Through the above technical solution, the output of the driving mechanism 2 is elongated to control the first connecting piece 102 to horizontally downward, and then the pressing part 1013 located at the end is realized to be arc downward to realize downward pressing and outward pushing.

[0044] In another aspect, the utility model provides a kind of tool fixture, including at least one clamping station 501, at least one workpiece placement area 502 is equipped on the clamping station 501, at least one above-mentioned pressing mechanism 1, at least one first pressing piece 503, at least one first limiting portion 505, at least one second pressing piece 512, at least one second limiting portion 507 are equipped on the clamping station 501, the first pressing piece 503 and the first limiting portion 505 are separately arranged on the opposite side outside the workpiece placement area 502, the second pressing piece 512 and the second limiting portion 507 are separately arranged on the opposite side outside the workpiece placement area 502, workpiece 4 is contacted the first limiting portion 505 and the second limiting portion 507 when the first pressing piece 503 and the second pressing piece 512 act to realize the force balance of the periphery of workpiece 4 and be limited clamped;

[0045] The pressing mechanism 1 acts on the workpiece 4 in the thickness direction of the workpiece 4 to limit the workpiece 4 in the thickness direction.

[0046] The pressing mechanism 1 is arranged in the workpiece placement area 502, the third limiting portion 401 is provided on the workpiece 4, and the pressing mechanism 1 acts on the workpiece 4 in the thickness direction and acts on the third limiting portion 401 obliquely downward when it is downward in arc shape to contact and limit the workpiece 4 to the first pressing piece 503, or the second pressing piece 512, or the first limiting portion 505, or the second limiting portion 507.

[0047] It also includes a first limiting block 504, which at least partially forms the first limiting portion 505 on one side of the workpiece placement area 502; it also includes a second limiting block 506, which at least partially forms the second limiting portion 507 on one side of the workpiece placement area 502; and it also includes an L-shaped limiting block 508, which forms the first limiting portion 505 and / or the second limiting portion 507 on both sides near the workpiece placement area 502.

[0048] In this embodiment, the pressing mechanism 1 is provided with two, which act on the upper and lower ends of the same side of the workpiece 4. Two L-shaped limiting blocks 508 cooperate with the adapter block 1012 of the pressing mechanism 1, i.e. the adapter block 1012 is at least partially shaped as an L-shaped protrusion to cooperate with the groove part of the L-shaped limiting block 508, so as to clamp and limit the third limiting portion 401 between the adapter block 1012 and the first limiting portion 505, and / or between the adapter block 1012 and the second limiting portion 507.

[0049] Further include the workbench 5, the clamping station 501 is arranged on the workbench 5, the first sliding slot 509 is opened on the workbench 5, and the first limiting block 504 is adjustably fixed on the first sliding slot 509 through the first sliding slot 509;The second sliding slot 510 is opened on the workbench 5, and the L-shaped limiting block 508 is adjustably fixed on the second sliding slot 510 through the second sliding slot 510.

[0050] The lateral limiting surface 302 is the first limiting part 505 or the second limiting part 507.

[0051] The first pressing part 503 and the second pressing part 512 can be air cylinders, and two are arranged respectively and fixed on the workbench 5, the second limiting block 506 is fixed on the workbench 5, the workbench 5 is fixedly connected by a plurality of supporting square tubes, at least two supporting square tubes are fixedly connected with the fixed plate 511, and the pressing mechanism 1 is fixed on the fixed plate 511, that is, the second connecting piece 105 and the third connecting piece 203 are fixed on the fixed plate 511.

[0052] Through the above technical scheme, the sliding slot can be adapted to the clamping and fixing of the door frame of various length, width and height during welding.

[0053] When in use, the positions of the first limiting block 504 and the L-shaped limiting block 508 can be adjusted according to the size of the door frame to be welded, after position fixing by the fastener, the output end of the first pressing part 503 and the second pressing part 512 is extended to abut against the first limiting part 505 and the second limiting part 507, to realize rough limiting, at this time, as shown in the drawings, on one of the L-shaped limiting pieces, one side inner wall is not abutted against the outer wall of the door frame, that is, there is a gap 6. Figure 3

[0054] Then, the driving mechanism 2 works, the pressing part 1013 at the end is driven to be arc-shaped downward, not only can press the workpiece 4 from top to bottom, but also can press the third limiting part 401 to at least one side surface of the groove of the L-shaped limiting block 508 from inside to outside, then realize welding.

[0055] It is worth mentioning that the hollow can be opened on the adapting block 1012, and the part to be welded is exposed, after partial welding, the height difference of the two will not change, the adapting block 1012 can be opened again, and the welding of the part pressed by the adapting block 1012 is realized.

[0056] Compared with the prior art, the utility model has the advantages that the structure is simple, can adapt to the welding of door frames of different specifications, can avoid the height difference of two pipe materials during welding, increase the welding efficiency, and effectively reduce the production cost.

[0057] ​The technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but the person skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. The person skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A compression mechanism, characterized in that, The utility model relates to a kind of press mechanism and press mechanism and clamping station, including: At least one compression assembly (101), at least part of the compression assembly (101) is provided with compression part (1013); At least two first connecting pieces (102), the first connecting piece (102) is rotatably connected with the compression assembly (101) by first rotation shaft (103), the first connecting piece (102) is provided with first rotation fixed point (104), two first rotation shafts (103), two the first rotation fixed point (104) forms parallelogram structure, the first connecting piece (102) rotates with first rotation fixed point (104), to adjust the distance between compression assembly (101) and first rotation fixed point (104), in turn, the height of compression part (1013) is adjusted to realize workpiece (4) tight pressure.

2. The clamping mechanism of claim 1, wherein: At least one the compression part (1013) is configured to the end of the compression assembly (101), so that the motion track of compression part (1013) is arc downward when parallelogram parallel deformation to realize workpiece (4) horizontal direction tight pressure.

3. A compression mechanism according to claim 1 or 2, characterised in that: The compression assembly (101) includes compression rod (1011) and the adaptive block (1012) fixed with compression rod (1011), the adaptive block (1012) is at least partially shaped to adapt to the workpiece (4), and the first connecting piece (102) is arranged on the compression rod (1011).

4. The holdback mechanism of claim 1, wherein: It further includes second connecting piece (105), the first connecting piece (102) is rotatably connected with the second connecting piece (105) by second rotation shaft (106), and the second rotation shaft (106) forms the first rotation fixed point (104).

5. The holdback mechanism of claim 1, wherein: It further includes driving mechanism (2), and the output end of the driving mechanism (2) is rotatably connected with the compression assembly (101) by third rotation shaft (201), and the driving mechanism (2) is connected with second rotation fixed point (202).

6. A tooling fixture characterized by: It includes at least one clamping station (501), and the clamping station (501) is provided with at least one workpiece placing area (502), and the clamping station (501) is provided with at least one compression mechanism of the above-mentioned claims 1-5, at least one first compression piece (503), at least one first limiting portion (505), at least one second compression piece (512) and at least one second limiting portion (507), the first compression piece (503) and the first limiting portion (505) are arranged on the opposite sides outside the workpiece placing area (502), the second compression piece (512) and the second limiting portion (507) are arranged on the opposite sides outside the workpiece placing area (502), and the workpiece (4) is abutted against the first limiting portion (505) and the second limiting portion (507) when the first compression piece (503) and the second compression piece (512) act to realize the force balance of the workpiece (4) and the workpiece (4) is clamped by limiting. The compression mechanism (1) acts on the workpiece (4) in the thickness direction of the workpiece (4) to realize the limiting of the workpiece (4) in the thickness direction.

7. The tooling fixture of claim 6, wherein: The pressing mechanism (1) is arranged in the workpiece placement area (502), the workpiece (4) is provided with a third limiting part (401), and the pressing mechanism (1) acts on the workpiece (4) in the thickness direction and acts on the third limiting part (401) obliquely downward when being curved downward, so as to abut and limit the workpiece (4) on the first pressing part (503), or the second pressing part (512), or the first limiting part (505), or the second limiting part (507).

8. The tooling fixture of claim 7, wherein: Further comprising a first limiting block (504), at least part of a side surface of the first limiting block (504) near the workpiece placement area (502) forms the first limiting part (505); And / or further comprising a second limiting block (506), at least part of a side surface of the second limiting block (506) near the workpiece placement area (502) forms the second limiting part (507); And / or further comprising an L-shaped limiting block (508), two side surfaces of the L-shaped limiting block (508) near the workpiece placement area (502) form the first limiting part (505) and / or the second limiting part (507).

9. The tooling fixture of claim 8, wherein: The pressing mechanism (1) is provided with two, respectively acting on the upper and lower ends of the same side of the workpiece (4); And / or further comprising a workbench (5), the clamping station (501) is arranged on the workbench (5), the workbench (5) is provided with a first sliding groove (509), and the first limiting block (504) is adjustably fixed on the first sliding groove (509) through the first sliding groove (509); And / or the workbench (5) is provided with a second sliding groove (510), and the L-shaped limiting block (508) is adjustably fixed on the second sliding groove (510) through the second sliding groove (510).

10. The tooling fixture of claim 9, wherein: Two L-shaped limiting blocks (508) cooperate with the adapter block (1012) of the pressing mechanism (1), that is, the adapter block (1012) is at least partially shaped as an L-shaped protrusion to cooperate with the groove part of the L-shaped limiting block (508), so as to clamp and limit the third limiting part (401) between the adapter block (1012) and the first limiting part (505), and / or between the adapter block (1012) and the second limiting part (507).

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