Space opposite pressing device

Abstract

The utility model belongs to the technical field of clamp structures of automobile production lines, and discloses a space opposite-pressing device which comprises a support, a supporting plate is mounted on the support and connected with a lower pressing arm and an upper pressing arm, the lower pressing arm and the upper pressing arm are mounted on the supporting plate through a four-bar mechanism, the four-bar mechanism is connected with a power source, and the power source is connected with a power source. A lower section block is installed at the top of the lower pressing arm, an upper section block is installed at the upper end of the upper pressing arm, the upper section block and the lower section block are horizontally arranged and are oppositely arranged up and down, and a limiting assembly used for limiting the four-connecting-rod mechanism is arranged on the supporting plate; a linkage type four-connecting-rod mechanism is adopted, only a single air cylinder is used as a power source, the complexity of the structure is reduced, the use requirement of a narrow space can be met, meanwhile, the cost investment is saved, and the working efficiency of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile production line fixture structures, in particular to a space pressure device. Background Art

[0002] In the automobile welding automation production line, the space at the automobile water flow channel is generally very small and special, so a two-level switching or slide switching structure is often used to design the tooling positioning unit at the relevant position.

[0003] Traditional positioning tooling units have the following defects: the design of positioning tooling units is difficult and the structure is complex, which makes the matching air circuit and electronic control system more cumbersome and prone to intermittent alarms, which has a certain impact on the processing efficiency of automotive workpieces; on the other hand, the cost of the two-level switching or slide switching structure is high. Utility Model Content

[0004] The main technical problem to be solved by the present invention is to provide a space pressure device, which adopts a linkage four-bar mechanism and uses only a single cylinder as a power source, reducing the complexity of the structure and being able to adapt to the use requirements of a small space, while saving cost investment and improving the working efficiency of the equipment.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A spatial counter-pressure device comprises a support, wherein a support plate is installed on the support, the support plate is connected to a lower pressure arm and an upper pressure arm, the lower pressure arm and the upper pressure arm are both installed on the support plate through a four-bar linkage, the four-bar linkage is connected to a power source, a lower mold block is installed on the top of the lower pressure arm, and an upper mold block is installed on the upper end of the upper pressure arm, the upper mold block and the lower mold block are both arranged horizontally, and the upper mold block and the lower mold block are arranged opposite to each other up and down, and a limit component for limiting the four-bar linkage is provided on the support plate.

[0007] The following is a further optimization of the above technical solution by the present invention:

[0008] The four-bar linkage includes a base frame, a left connecting arm, an upper frame and a right connecting arm which are connected in sequence. The base frame and the upper frame are arranged opposite to each other up and down. The lower end of the base frame is fixedly mounted on the support plate. The lower ends of the left connecting arm and the right connecting arm are hingedly mounted on the base frame. The upper ends of the left connecting arm and the right connecting arm are hingedly mounted on the upper frame. The two ends of the power source are hingedly connected to the support plate and the right connecting arm respectively.

[0009] Further optimization: the upper pressure arm and the right connecting rod arm are fixed as one body.

[0010] Further optimization: the lower pressure arm is fixed on the upper frame.

[0011] Further optimization: the limiting assembly (7) includes a limiting protrusion (71) and a limiting recess (72) that are plugged together, the limiting recess (72) is fixed to the outer wall of the left connecting rod arm (52), an upwardly protruding mounting portion (21) is provided at one end of the top of the support plate (2), and the limiting protrusion (71) is fixed to the upper end of the mounting portion (21).

[0012] Further optimization: A downwardly protruding fixing portion is provided at the bottom of the support plate, and the fixing portion is fixedly installed on the support by a plurality of fastening bolts.

[0013] The utility model adopts the above technical solution, which has the following beneficial effects:

[0014] 1. The technical solution of the utility model is ingenious in conception and reasonable in structure. It adopts a linkage four-bar mechanism, so that the output force of the original cylinder drives the four-bar mechanism through the right connecting rod arm, thereby making the upper block and the lower block move at the same time, meeting the requirements for clamping and positioning of small and special structure workpieces.

[0015] 2. The utility model changes the motion trajectory and position of the upper and lower mold blocks by adjusting the distances between the base frame, the left connecting arm, the upper frame and the right connecting arm, thereby making the utility model suitable for the design of different special narrow spaces.

[0016] 3. The present invention uses only a single cylinder as a power source, and simplifies the structure of the pressure device, which not only reduces the manufacturing cost of the present invention, but also reduces the complexity of the structure of the present invention, and also makes the control system of the pressure device more stable, avoiding the occurrence of intermittent alarms due to overly complex structures, thereby improving the working efficiency of the equipment.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative labor.

[0019] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structural position of an embodiment of the utility model in a compressed state;

[0021] Figure 3This is a schematic diagram of the structural position of an embodiment of the utility model in the open state.

[0022] In the figure: 1-support; 2-support plate; 21-mounting part; 22-fixing part; 3-lower pressure arm; 31-lower block; 4-upper pressure arm; 41-upper block; 5-four-bar linkage; 51-base; 52-left connecting rod arm; 53-upper frame; 54-right connecting rod arm; 6-power source; 7-limiting assembly; 71-limiting protrusion; 72-limiting concave block; 8-workpiece. DETAILED DESCRIPTION

[0023] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1-Figure 3 As shown together, a spatial counter-pressure device includes a support 1, a support plate 2 is installed on the support 1, the support plate 2 is connected to a lower pressure arm 3 and an upper pressure arm 4, the lower pressure arm 3 and the upper pressure arm 4 are both installed on the support plate 2 through a four-bar linkage 5, the four-bar linkage 5 is connected to a power source 6, a lower mold block 31 is installed on the top of the lower pressure arm 3, and an upper mold block 41 is installed on the upper end of the upper pressure arm 4, the upper mold block 41 and the lower mold block 31 are both horizontally arranged, and the upper mold block 41 and the lower mold block 31 are arranged opposite to each other in the upper and lower directions, and a limiting component 7 for limiting the four-bar linkage 5 is provided on the support plate 2.

[0025] In this embodiment, the upper pressing arm 4 and the upper mold block 41 are rigidly connected by bolts.

[0026] In this embodiment, the lower pressing arm 3 and the lower mold block 31 are rigidly connected by bolts.

[0027] Among them, the four-bar linkage 5 includes a base frame 51, a left connecting arm 52, an upper frame 53 and a right connecting arm 54 which are connected in sequence. The base frame 51 and the upper frame 53 are arranged opposite to each other up and down. The lower end of the base frame 51 is fixedly mounted on the support plate 2, and the lower ends of the left connecting arm 52 and the right connecting arm 54 are hingedly mounted on the base frame 51. The upper ends of the left connecting arm 52 and the right connecting arm 54 are hingedly mounted on the upper frame 53. The two ends of the power source 6 are respectively hingedly connected to the support plate 2 and the right connecting arm 54.

[0028] In this embodiment, the right connecting arm 54 is directly connected to the power source 6, so that the output force of the power source 6 drives the four-bar linkage 5 through the right connecting arm 54, thereby driving the upper mold block 41 and the lower mold block 31 to move simultaneously, which not only satisfies the smooth insertion of the upper mold block 41 and the lower mold block 31 into the narrow and special space of the workpiece 8 for clamping, but also enables them to safely withdraw from the narrow and special space of the workpiece 8.

[0029] In this embodiment, the power source 6 is a cylinder.

[0030] In this embodiment, only a single cylinder is used as the power source, thereby reducing the complexity of the structure of the counter-pressure device, thereby making the installation and maintenance operations of the counter-pressure device simpler and more convenient.

[0031] Compared with the traditional slide switching or two-stage switching structure, the control system of the pressure device with a simple structure is more stable, which not only improves the working efficiency of the equipment, but also reduces the manufacturing cost of the pressure device, thereby greatly saving cost investment.

[0032] In this embodiment, the cylinder and the right connecting rod arm 54 are rigidly connected via a pin.

[0033] In this embodiment, the cylinder and the support plate 2 are rigidly connected via a pin.

[0034] In this embodiment, the bottom frame 51, the left connecting arm 52, the upper frame 53 and the right connecting arm 54 are connected by shoulder screws.

[0035] In this embodiment, bushings are provided in the rotation holes of the left link arm 52 and the right link arm 54 .

[0036] In this embodiment, each shoulder screw is fastened with a lock nut.

[0037] In this embodiment, the base frame 51 and the support plate 2 are rigidly connected by welding.

[0038] like Figure 1 As shown, the upper pressure arm 4 and the right connecting rod arm 54 are fixed as a whole.

[0039] Furthermore, the lower pressing arm 3 is fixed to the upper frame 53 .

[0040] In this embodiment, the upper frame 53 and the lower pressure arm 3 are rigidly connected by welding.

[0041] like Figure 1-Figure 3 As shown together, the limiting assembly 7 includes a limiting protrusion 71 and a limiting recess 72 that are plugged in. The limiting recess 72 is fixed to the outer wall of the left connecting rod arm 52. An upwardly protruding mounting portion 21 is provided at one end of the top of the support plate 2, and the limiting protrusion 71 is fixed to the upper end portion of the mounting portion 21.

[0042] In this embodiment, the mounting portion 21 and the limiting protrusion 71 are rigidly connected by bolts.

[0043] In this embodiment, the limiting recess 72 and the left connecting rod arm 52 are rigidly connected by bolts.

[0044] In addition, a downwardly protruding fixing portion 22 is provided at the bottom of the support plate 2 , and the fixing portion 22 is fixedly mounted on the support 1 by a plurality of fastening bolts 23 .

[0045] The method of using the utility model is as follows:

[0046] In the first step, the rod of the power source 6 is retracted downward, driving the right connecting arm 54 to rotate outward, and the right connecting arm 54 drives the upper pressure arm 4 and the upper mold block 41 to rotate outward synchronously.

[0047] In the second step, the right link arm 54 drives the four-bar linkage 5 to perform a linkage action, so that the distance between the bottom frame 51 and the upper frame 53 is reduced, thereby driving the lower pressure arm 3 and the lower mold block 31 to rotate downward, and the distance between the upper mold block 41 and the lower mold block 31 is increased.

[0048] In the third step, the workpiece 8 is placed at a predetermined position, and the narrow special space on the workpiece 8 that needs to be clamped is placed between the upper mold block 41 and the lower mold block 31 .

[0049] In the fourth step, the rod of the power source 6 extends upward, driving the upper pressure arm 4 and the upper mold block 41 to rotate back to their original positions through the right connecting rod arm 54, and at the same time driving the lower pressure arm 3 and the lower mold block 31 to perform a linkage action through the four-bar linkage 5.

[0050] In the fifth step, the distance between the upper mold block 41 and the lower mold block 31 is gradually reduced, and finally the workpiece 8 is clamped to a preset narrow special space position.

[0051] In this embodiment, the support 1 and the fixing portion 22 are rigidly connected by fastening bolts 23 .

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A space pressure device, comprising a support (1), characterized in that: A support plate (2) is mounted on the support (1), the support plate (2) is connected to a lower pressure arm (3) and an upper pressure arm (4), the lower pressure arm (3) and the upper pressure arm (4) are both mounted on the support plate (2) via a four-bar linkage (5), the four-bar linkage (5) is connected to a power source (6), a lower mold block (31) is mounted on the top of the lower pressure arm (3), an upper mold block (41) is mounted on the upper end of the upper pressure arm (4), the upper mold block (41) and the lower mold block (31) are both horizontally arranged, the upper mold block (41) and the lower mold block (31) are arranged relative to each other in an upper and lower direction, and a limiting component (7) for limiting the four-bar linkage (5) is provided on the support plate (2).

2. The space pressure device according to claim 1, characterized in that: The four-bar linkage (5) comprises a base frame (51), a left connecting arm (52), an upper frame (53) and a right connecting arm (54) which are sequentially connected. The base frame (51) and the upper frame (53) are arranged opposite to each other in an upper and lower direction. The lower end of the base frame (51) is fixedly mounted on the support plate (2). The lower ends of the left connecting arm (52) and the right connecting arm (54) are hingedly mounted on the base frame (51). The upper ends of the left connecting arm (52) and the right connecting arm (54) are hingedly mounted on the upper frame (53). The two ends of the power source (6) are hingedly connected to the support plate (2) and the right connecting arm (54) respectively.

3. The space pressure device according to claim 2, characterized in that: The upper pressing arm (4) and the right connecting rod arm (54) are fixed as a whole.

4. The space pressure device according to claim 3, characterized in that: The lower pressing arm (3) is fixed on the upper frame (53).

5. The space pressure device according to claim 2, characterized in that: The limiting assembly (7) comprises a limiting protrusion (71) and a limiting recess (72) which are plugged together. The limiting recess (72) is fixed to the outer wall of the left connecting rod arm (52). An upwardly protruding mounting portion (21) is provided at one end of the top of the support plate (2). The limiting protrusion (71) is fixed to the upper end of the mounting portion (21).

6. The space pressure device according to claim 1, characterized in that: A downwardly protruding fixing portion (22) is provided at the bottom of the support plate (2), and the fixing portion (22) is fixedly mounted on the support (1) via a plurality of fastening bolts (23).

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