Center positioning mechanism

Abstract

The utility model discloses a center positioning mechanism, which comprises a carrier main body, a first sliding block, a second sliding block, a third sliding block and a fourth sliding block, a first positioning block, a second positioning block, a third positioning block and a fourth positioning block which define a positioning space are arranged at the end parts of the first sliding block, the second sliding block, the third sliding block and the fourth sliding block; the pushing air cylinder is provided with a wedge-shaped pushing block located between the first sliding block and the third sliding block, a first connecting rod is arranged between the second sliding block and the first sliding block, and a second connecting rod is arranged between the fourth sliding block and the third sliding block; and the reset spring module comprises a first spring and a third spring. When a product is placed in the positioning space, the positioning space is expanded by pushing the wedge-shaped pushing block through the pushing air cylinder, and after the product is placed in the positioning space, the positioning space is reduced through the first spring and the third spring, and center positioning is conducted on the product.

Description

Technical field:

[0001] The utility model relates to the technical field of product positioning, in particular to a central positioning mechanism. Background technology:

[0002] During the processing and production of products, it is usually necessary to position the products. Currently, there are two most commonly used positioning methods on the market: the first is to use two sides as the positioning reference, and then use a mechanism to push the two sides separately. Due to the tolerance of incoming materials, this method is not conducive to center positioning; the second is to use the center as the positioning reference, but the springs and mechanisms used are relatively complex, and the repeatability of product center positioning is poor. For example: The center positioning mechanism and equipment with Chinese patent application number 201920198871.7. In the technical solution disclosed in this patent, an elastic member is used to push the clamping part to always maintain the trend of moving toward the center of the base, and the power mechanism pushes the cam mechanism to move the clamping part away from the base. Therefore, when positioning the product, the power mechanism pushes the cam mechanism to open the clamping part. After the product is in place, the power mechanism pushes the cam mechanism to release the opening force on the clamping part, and the elastic member pushes the clamping part to position the product. Therefore, in this patent, the mechanism structure is complex and the repeatability of product center positioning is poor

[0003] In view of this, the inventor proposes the following technical solution. Utility model content:

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a center positioning mechanism.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a center positioning mechanism, comprising: a carrier body, on which a first slider, a second slider, a third slider and a fourth slider are slidably arranged, which can move in all directions respectively, and the ends of the first slider, the second slider, the third slider and the fourth slider are provided with a first positioning block, a second positioning block, a third positioning block and a fourth positioning block which enclose a positioning space;

[0006] A pushing cylinder, wherein a wedge-shaped pushing block is provided on the pushing cylinder and is located between the first slider and the third slider, a first connecting rod is provided between the second slider and the first slider, and a second connecting rod is provided between the fourth slider and the third slider;

[0007] A return spring module includes a first spring for pushing the first slider toward the center of the carrier body and a third spring for pushing the third slider toward the center of the carrier body.

[0008] Furthermore, in the above technical solution, an X-axis guide rail for slidingly installing the first slider and the third slider is provided at the bottom of the carrier body, and a first Y-axis guide rail and a second Y-axis guide rail for slidingly installing the second slider and the fourth slider are vertically provided on both sides of the X-axis guide rail.

[0009] Furthermore, in the above technical solution, the carrier body is provided with a first stroke hole, a second stroke hole, a third stroke hole and a fourth stroke hole for the first positioning block, the second positioning block, the third positioning block and the fourth positioning block to pass through respectively, and the first stroke hole, the second stroke hole, the third stroke hole and the fourth stroke hole are respectively located in the front, back, left and right directions of the carrier body.

[0010] Furthermore, in the above technical solution, the carrier body is also provided with a first mounting seat and a third mounting seat around the four sides thereof, which are respectively located beside the first travel hole, the third travel hole and the fourth travel hole and are respectively used to install the first spring and the third spring.

[0011] Furthermore, in the above technical solution, a first sliding groove and a second sliding groove are provided on both sides of the wedge-shaped push block, which are respectively docked and positioned with the first sliding block and the third sliding block.

[0012] Furthermore, in the above technical solution, a fifth slider is arranged side by side with the second slider, the fifth slider and the fourth slider are symmetrically located on both sides of the third slider, and a third connecting rod is arranged between the fifth slider and the third slider, and a fifth positioning block is arranged on the fifth slider.

[0013] Furthermore, in the above technical solution, the third slider is in a "T" shape, and both sides of the "T" head of the third slider are hinged to one end of the second connecting rod and the third connecting rod respectively, and the second connecting rod and the third connecting rod are distributed in an "eight" shape on both sides of the third slider.

[0014] Furthermore, in the above technical solution, the other end of the second connecting rod is hinged to an end of the fourth slider away from the third slider, and the other end of the third connecting rod is hinged to an end of the fifth slider away from the third slider.

[0015] Furthermore, in the above technical solution, a sixth slider is arranged side by side with the fourth slider, the sixth slider and the second slider are symmetrically located on both sides of the first slider, and a fourth connecting rod is arranged between the sixth slider and the first slider, and a sixth positioning block is arranged on the sixth slider.

[0016] Furthermore, in the above technical solution, the first slider is in a "T" shape, and both sides of the "T" head of the first slider are hinged to one end of the first connecting rod and the fourth connecting rod respectively, and the first connecting rod and the fourth connecting rod are distributed in an "eight" shape on both sides of the first slider; the other end of the first connecting rod is hinged to an end of the second slider away from the first slider, and the other end of the fourth connecting rod is hinged to an end of the sixth slider away from the first slider.

[0017] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0018] 1. The utility model uses a push cylinder to drive the wedge-shaped push block to push the first slider and the third slider away from both sides, and drives the second slider and the fourth slider away from both sides through the first connecting rod and the second connecting rod, so as to expand the positioning space. When the product is placed in the positioning space, the first and third sliders are pushed together by the first and third springs, and the second and fourth sliders are driven together synchronously to achieve the center positioning of the product. The elastic force of the first and third springs is used to make the first, second, third and fourth positioning blocks take into account the material tolerance of the product, and still accurately achieve the center positioning of the product. Secondly, the structure is streamlined and the product positioning repeatability is high.

[0019] 2. By adding a sixth slider symmetrical to the second slider and a fifth slider symmetrical to the fourth slider on both sides of the shaft guide rail, and connecting the first slider with the second slider and the sixth slider with the first connecting rod and the fourth connecting rod, and connecting the third slider with the fourth slider and the fifth slider with the second connecting rod and the fourth connecting rod, the left-right symmetry of the positioning space is achieved, which is beneficial for centering and correcting the product. Description of the drawings:

[0020] Figure 1 The utility model is a three-dimensional Figure 1 ;

[0021] Figure 2 The utility model is a three-dimensional Figure 2 ;

[0022] Figure 3 It is an exploded view of the utility model;

[0023] Figure 4 It is a three-dimensional diagram of the wedge-shaped push block in the utility model. Specific implementation method:

[0024] The utility model is further described below in conjunction with specific embodiments and drawings.

[0025] See Figures 1 to 4As shown, a center positioning mechanism comprises: a carrier body A, on which a first slider 1, a second slider 2, a third slider 3 and a fourth slider 4 which can move in all directions are slidably provided, and ends of the first slider 1, the second slider 2, the third slider 3 and the fourth slider 4 are provided with a first positioning block 11, a second positioning block 21, a third positioning block 31 and a fourth positioning block 41 which enclose a positioning space; a pushing cylinder C, on which a wedge-shaped pushing block D located between the first slider 1 and the third slider 3 is provided, a first connecting rod E1 is provided between the second slider 2 and the first slider 1, and a second connecting rod E2 is provided between the fourth slider 4 and the third slider 3; a reset spring module, which comprises a first spring 10 for pushing the first slider 1 to move toward the center of the carrier body A and a third spring 30 for pushing the third slider 3 to move toward the center of the carrier body A. The push cylinder C is used to drive the wedge-shaped push block D to push the first slider 1 and the third slider 3 away from each other, and the first connecting rod E1 and the second connecting rod E2 drive the second slider 2 and the fourth slider 4 away from each other to expand the positioning space. When the product is placed in the positioning space, the first spring 10 and the third spring 30 will push the first slider 1 and the third slider 3 together, and simultaneously drive the second slider 2 and the fourth slider 4 together to achieve the center positioning of the product. The elastic force of the first spring 10 and the third spring 30 is used to make the first positioning block 11, the second positioning block 21, the third positioning block 31 and the fourth positioning block 41 take into account the incoming material tolerance of the product, and still accurately achieve the center positioning of the product. Secondly, the structure is simple and the product positioning repeatability is high.

[0026] An X-axis guide rail 7 for slidably mounting the first slider 1 and the third slider 3 is disposed at the bottom of the carrier body A, and a first Y-axis guide rail 8 and a second Y-axis guide rail 9 for slidably mounting the second slider 2 and the fourth slider 4 are vertically disposed on both sides of the X-axis guide rail 7.

[0027] The carrier body A is provided with a first stroke hole A1, a second stroke hole A2, a third stroke hole A3 and a fourth stroke hole A4 for the first positioning block 11, the second positioning block 21, the third positioning block 31 and the fourth positioning block 41 to pass through respectively, and the first stroke hole A1, the second stroke hole A2, the third stroke hole A3 and the fourth stroke hole A4 are respectively located in the front, back, left and right directions of the carrier body A.

[0028] The carrier body A is also provided with a first mounting seat 100 and a third mounting seat 300 which are located beside the first travel hole A1, the third travel hole A3 and the fourth travel hole A4 and are used to mount the first spring 10 and the third spring 30 respectively.

[0029] The two sides of the wedge-shaped push block D are provided with a first slide groove D1 and a second slide groove D2 which are respectively docked and positioned with the first sliding block 1 and the third sliding block 3 .

[0030] A fifth slider 5 is arranged in parallel beside the second slider 2. The fifth slider 5 and the fourth slider 4 are symmetrically located on both sides of the third slider 3, and a third connecting rod E3 is arranged between the fifth slider 5 and the third slider 3. A fifth positioning block 51 is arranged on the fifth slider 5. A third Y-axis guide rail 80 is also arranged in parallel beside the first Y-axis guide rail 8, which is perpendicular to the X-axis guide rail 7 and for the fifth slider 5 to move. A fifth travel hole A5 is arranged on the carrier body A for the fifth positioning block 51 to pass through, and the fifth travel hole A5 is located in parallel with the second travel hole A2 on the same side. The third slider 3 is in a "T" shape, and the two sides of the "T" head of the third slider 3 are respectively hinged to one end of the second connecting rod E2 and the third connecting rod E3, and the second connecting rod E2 and the third connecting rod E3 are distributed in an "eight" shape on both sides of the third slider 3. The other end of the second connecting rod E2 is hinged to one end of the fourth slider 4 away from the third slider 3 , and the other end of the third connecting rod E3 is hinged to one end of the fifth slider 5 away from the third slider 3 .

[0031] A sixth slider 6 is arranged side by side with the fourth slider 4. The sixth slider 6 and the second slider 2 are symmetrically located on both sides of the first slider 1, and a fourth connecting rod E4 is arranged between the sixth slider 6 and the first slider 1. A sixth positioning block 61 is arranged on the sixth slider 6. A fourth Y-axis guide rail 90 is arranged side by side with the second Y-axis guide rail 9, which is perpendicular to the X-axis guide rail 7 and for the movement of the sixth slider 6. A sixth travel hole A6 is arranged on the carrier body A for the sixth positioning block 61 to pass through. The sixth travel hole A6 is arranged side by side with the fourth travel hole A4 on the same side. The first slider 1 is in a "T" shape, and both sides of the "T" head of the first slider 1 are hinged to one end of the first connecting rod E1 and the fourth connecting rod E4 respectively, and the first connecting rod E1 and the fourth connecting rod E4 are distributed in an "eight" shape on both sides of the first slider 1; the other end of the first connecting rod E1 is hinged to the end of the second slider 2 away from the first slider 1, and the other end of the fourth connecting rod E4 is hinged to the end of the sixth slider 6 away from the first slider 1.

[0032] Secondly, by adding a sixth slider 6 symmetrical to the second slider 2 and a fifth slider 5 symmetrical to the fourth slider 4 on both sides of the X-axis guide rail 7, and connecting the first slider 1 with the second slider 2 and the sixth slider 6 with the first connecting rod E1 and the fourth connecting rod E4, and connecting the third slider 3 with the fourth slider 4 and the fifth slider 5 with the second connecting rod E2 and the fourth connecting rod E4, the left-right symmetry of the positioning space is achieved, which is beneficial to the centering correction and alignment of the product.

[0033] In summary, when the utility model is used, the wedge-shaped push block D is driven by the push cylinder C to push the first slider 1 and the third slider 3 away from both sides, and the second slider 2 and the fourth slider 4 are driven away from both sides by the first connecting rod E1 and the second connecting rod E2, and the third connecting rod E3 and the fourth connecting rod E4 drive the fifth slider 5 and the sixth slider 5 away from both sides, so as to expand the positioning space. When the product is placed in the positioning space, the first spring 10 and the third spring 30 will push the first slider 1 and the third slider 3 together, and simultaneously drive the second slider 2 and the fourth slider 4 and the fifth slider 5 and the sixth slider 6 together to achieve the center positioning of the product, and the elastic force of the first spring 10 and the third spring 30 is used to make the first positioning block 11, the second positioning block 21, the third positioning block 31 and the fourth positioning block 41 take into account the incoming material tolerance of the product, and still accurately achieve the center positioning of the product. Secondly, the structure is simple and the product positioning repeatability is high.

[0034] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A center positioning mechanism, characterized in that: include: A carrier body (A), wherein a first slider (1), a second slider (2), a third slider (3) and a fourth slider (4) are slidably arranged on the carrier body (A) and are capable of moving in all directions respectively, and ends of the first slider (1), the second slider (2), the third slider (3) and the fourth slider (4) are provided with a first positioning block (11), a second positioning block (21), a third positioning block (31) and a fourth positioning block (41) which enclose a positioning space; a pushing cylinder (C), wherein a wedge-shaped pushing block (D) is provided on the pushing cylinder (C) and is located between the first slider (1) and the third slider (3); a first connecting rod (E1) is provided between the second slider (2) and the first slider (1); and a second connecting rod (E2) is provided between the fourth slider (4) and the third slider (3); A return spring module, the return spring module comprising a first spring (10) for pushing the first slider (1) towards the center of the carrier body (A) and a third spring (30) for pushing the third slider (3) towards the center of the carrier body (A).

2. A center positioning mechanism according to claim 1, characterized in that: An X-axis guide rail (7) for slidably mounting the first slider (1) and the third slider (3) is disposed at the bottom of the carrier body (A), and a first Y-axis guide rail (8) and a second Y-axis guide rail (9) for slidably mounting the second slider (2) and the fourth slider (4) are vertically disposed on both sides of the X-axis guide rail (7).

3. A center positioning mechanism according to claim 1, characterized in that: The carrier body (A) is provided with a first stroke hole (A1), a second stroke hole (A2), a third stroke hole (A3) and a fourth stroke hole (A4) for the first positioning block (11), the second positioning block (21), the third positioning block (31) and the fourth positioning block (41) to pass through respectively, and the first stroke hole (A1), the second stroke hole (A2), the third stroke hole (A3) and the fourth stroke hole (A4) are respectively located in the front, back, left and right directions of the carrier body (A).

4. A center positioning mechanism according to claim 3, characterized in that: The carrier body (A) is also provided with a first mounting seat (100) and a third mounting seat (300) which are respectively located beside the first travel hole (A1), the third travel hole (A3) and the fourth travel hole (A4) and are respectively used to mount the first spring (10) and the third spring (30).

5. A center positioning mechanism according to claim 1, characterized in that: A first slide groove (D1) and a second slide groove (D2) are provided on both sides of the wedge-shaped push block (D) for docking and positioning with the first slide block (1) and the third slide block (3) respectively.

6. A center positioning mechanism according to any one of claims 1 to 5, characterized in that: A fifth slider (5) is arranged in parallel beside the second slider (2); the fifth slider (5) and the fourth slider (4) are symmetrically located on both sides of the third slider (3); a third connecting rod (E3) is arranged between the fifth slider (5) and the third slider (3); and a fifth positioning block (51) is arranged on the fifth slider (5).

7. A center positioning mechanism according to claim 6, characterized in that: The third slider (3) is in a "T" shape, and both sides of the "T" head of the third slider (3) are respectively hinged to one end of the second connecting rod (E2) and the third connecting rod (E3), and the second connecting rod (E2) and the third connecting rod (E3) are distributed on both sides of the third slider (3) in an "eight" shape.

8. A center positioning mechanism according to claim 7, characterized in that: The other end of the second connecting rod (E2) is hinged to an end of the fourth slider (4) away from the third slider (3), and the other end of the third connecting rod (E3) is hinged to an end of the fifth slider (5) away from the third slider (3).

9. A center positioning mechanism according to any one of claims 1 to 5, characterized in that: A sixth slider (6) is arranged in parallel beside the fourth slider (4); the sixth slider (6) and the second slider (2) are symmetrically located on both sides of the first slider (1); a fourth connecting rod (E4) is arranged between the sixth slider (6) and the first slider (1); and a sixth positioning block (61) is arranged on the sixth slider (6).

10. A center positioning mechanism according to claim 9, characterized in that: The first slider (1) is in a "T" shape, and the two sides of the "T" head of the first slider (1) are respectively hinged to one end of the first connecting rod (E1) and the fourth connecting rod (E4), and the first connecting rod (E1) and the fourth connecting rod (E4) are distributed in an "eight" shape on both sides of the first slider (1); the other end of the first connecting rod (E1) is hinged to one end of the second slider (2) away from the first slider (1), and the other end of the fourth connecting rod (E4) is hinged to one end of the sixth slider (6) away from the first slider (1).

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