Roller type connecting piece and guide rail assembly

Abstract

The roller type connecting piece and the guide rail assembly comprising the roller type connecting piece comprise a shell, a guide wheel and an eccentric wheel, the guide wheel and the eccentric wheel are connected to the shell, the guide wheel is in rolling contact with the surface of a guide rail, and resistance generated when a sliding block slides can be reduced. The eccentric wheel is provided with an eccentric shaft and a center shaft, when the roller type connecting piece is installed on the sliding block, the eccentric wheel is rotated, the outer contour of the eccentric wheel can drive the shell to extrude the guide wheel in the direction of the guide rail, enough pressing force exists between the guide wheel and the guide rail, and at the moment, the eccentric wheel and the shell are locked on the sliding block through the pressing fastener. The guide wheels can keep contact with the guide rails. Compared with a pulling and pressing type matching structure in the prior art, the roller type connecting piece is high in adjustability, and zero-clearance assembly between the guide wheel and the guide rail can be achieved.

Description

Technical Field

[0001] This utility model relates to a mating structure of a guide rail and a slider, specifically a roller connector and a guide rail assembly. Background Technology

[0002] Stamping processing equipment requires a sliding block and guide rail to achieve mold opening and closing. In the existing technology, the guide rail and sliding block usually adopt a tension-compression structure, with both sides of the sliding block in surface contact with the guide rail. During operation, the guide rail and sliding block need to maintain zero clearance to ensure processing accuracy. However, the tension-compression structure in the existing technology is difficult to achieve the above-mentioned zero clearance assembly requirement. Misalignment is prone to occur between the sliding block and the guide rail, resulting in a decrease in processing accuracy. The surface contact between the sliding block and the guide rail also greatly increases the resistance of mold opening and closing. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a roller-type connector for the mating connection of a guide rail and a slider, comprising:

[0004] A housing is connected to a slider, and an adjustment hole is provided on the housing along the connection direction;

[0005] At least one set of guide wheels, the guide wheels having a rotating shaft and rotatably disposed within the housing along the rotating shaft;

[0006] An eccentric wheel is disposed within an adjustment hole and has a head that presses against the surface of the housing. The eccentric wheel has a central shaft and an eccentric shaft. The central shaft and the eccentric shaft extend parallel to the rotation axis of the guide wheel. The central shaft is located at the center of the outer contour of the eccentric wheel, and the eccentric shaft is offset from the central shaft. The eccentric wheel is capable of rotating about the eccentric shaft. The outer contour of the portion of the eccentric wheel that extends into the adjustment hole contacts the inner wall of the adjustment hole.

[0007] And a press-fit fastener, one end of which passes through the center of the eccentric wheel and is connected to the slider, and the other end of which is press-fitted onto the head surface of the eccentric wheel.

[0008] Furthermore, the pressing fastener is an adjusting screw, one end of which passes through the eccentric shaft of the eccentric wheel and is threaded to the slider, and the cap of the adjusting screw is pressed against the head of the eccentric wheel.

[0009] Furthermore, the eccentric wheel includes a head and a core in the self-connection direction from the outside to the inside, the core extending into the adjustment hole.

[0010] Furthermore, the adjusting hole is a countersunk hole, and the head of the eccentric wheel is located inside the countersunk head of the countersunk hole.

[0011] Furthermore, the central axis deviates from the eccentric axis by 1-2 mm.

[0012] Furthermore, a U-shaped groove is provided at the bottom of the housing corresponding to the position of each guide wheel; a guide wheel fastener is inserted into the U-shaped groove, the guide wheel fastener is inserted at the center of the guide wheel, and a bearing is installed between the guide wheel and the guide wheel fastener.

[0013] Furthermore, a spacer ring is connected between the bearing and the wall of the U-shaped groove.

[0014] This utility model also provides a guide rail assembly, including two parallel guide rails and a slider installed between the guide rails. At least one set of the above-mentioned roller connectors are installed on each side along the sliding direction of the slider. The guide wheel of each set of roller connectors rolls in contact with the guide rail and is connected to the slider through a press-fit fastener.

[0015] Furthermore, the housing is provided with a connecting hole and a fastening connector, and the fastening connector passes through the connecting hole and is connected to the slider.

[0016] Furthermore, the eccentric wheel includes a tail extending toward the slider along the connection direction, the tail being coaxially arranged with the eccentric shaft, and the surface of the slider opposite to the eccentric wheel is provided with a positioning hole for the tail to extend into.

[0017] This invention provides a roller-type connector and a guide rail assembly including the roller-type connector. The assembly includes a housing, a guide wheel and an eccentric wheel connected to the housing. The guide wheel and the guide rail surface make rolling contact, reducing the resistance generated when the slider slides. The eccentric wheel has an eccentric shaft and a central shaft. When the roller-type connector is installed on the slider, rotating the eccentric wheel causes its outer contour to press against the guide wheel in the direction that drives the housing towards the guide rail, creating sufficient clamping force between the guide wheel and the guide rail. At this point, the eccentric wheel and housing are locked onto the slider by pressing fasteners, maintaining contact between the guide wheel and the guide rail. Compared to the conventional tension-compression fit structure, the roller-type connector of this invention offers high adjustability and can achieve zero-clearance assembly between the guide wheel and the guide rail. Attached Figure Description

[0018] Figure 1 This is a front structural diagram of a roller-type connector according to the present invention;

[0019] Figure 2 This is a schematic diagram of the back structure of a roller-type connector according to this utility model;

[0020] Figure 3 This is an exploded view of a roller-type connector;

[0021] Figure 4 This is a schematic diagram of the shell structure;

[0022] Figure 5 This is a structural schematic diagram of the bearing assembly of this utility model;

[0023] Figure 6 This is a schematic diagram of the eccentric wheel.

[0024] Figure 7 This is a schematic diagram illustrating the cooperation between a roller-type connector, a guide rail, and a slider according to this utility model.

[0025] Reference numerals in the attached drawings: 1. Housing; 2. Guide wheel; 3. Eccentric wheel; 4. Adjustment hole; 5. Rotating shaft; 6. Central shaft; 7. Eccentric shaft; 8. Head; 9. Core; 10. Tail; 11. Press fastener; 12. U-groove; 13. Bearing; 14. C-shaped buckle; 15. Spacer ring; 16. Guide wheel fastener; 17. Fastening connector; 18. Guide rail; 19. Slider. Detailed Implementation

[0026] Example 1: As Figures 1 to 4 The roller-type connector shown is used for the mating connection between a guide rail 18 and a slider 19. It includes a housing 1, guide wheels 2, and an eccentric wheel 3. The housing 1 serves as the carrier of the entire roller-type connector and is connected to the slider 19. At least one set of guide wheels 2 are connected to the bottom of the housing 1. Each guide wheel 2 has a rotation axis 5 and can rotate around the rotation axis 5. When the slider 19 moves, it replaces the slider 19 in contacting the surface of the guide rail 18, transforming the surface-to-surface sliding contact between the slider 19 and the guide rail 18 into a line-to-surface rolling contact between the guide wheel 2 and the guide rail 18. An adjustment hole 4 is provided inside the housing 1 above the guide wheel 2. The eccentric wheel 3 has a circular cross-section and is installed within the adjustment hole 4.

[0027] like Figure 6 As shown, the eccentric wheel 3 has a central shaft 6 and an eccentric shaft 7. The central shaft 6 and the eccentric shaft 7 extend parallel to the rotation axis 5 of the guide wheel 2. The central shaft 6 is located at the center of the outer contour of the eccentric wheel 3, and the eccentric shaft 7 is offset from the central shaft 6. The eccentric wheel 3 can rotate around the eccentric shaft 7. The outer contour of the part of the eccentric wheel 3 that extends into the adjustment hole 4 contacts the inner wall of the adjustment hole 4. The roller connector is set with the side opposite to the slider 19 as the inner side of the connection direction and the other side as the outer side of the connection direction. The eccentric wheel 3 includes a head 8 and a core 9 from the outside to the inside of the connection direction. The core 9 extends into the adjustment hole 4, and the head 8 is pressed against the surface of the housing 1. Because the central axis 6 of the eccentric wheel 3 is offset from the eccentric axis 7, and its outer contour is in contact with the inner wall of the adjusting hole 4, during rotation, the eccentric wheel 3 will automatically adjust the force applied to the housing 1 and the guide wheel 2 through the adjusting hole 4 until sufficient clamping force is achieved. At this time, the pressing fastener 11 is installed, pressing the eccentric wheel 3 and the housing 1 onto the slider 19 and locking the position of the eccentric wheel 3 relative to the slider 19, thus maintaining the contact pressure between the guide wheel 2 and the guide rail 18. In this embodiment, the offset of the central axis 6 from the eccentric axis 7 is 1-2 mm.

[0028] In this embodiment, the pressing fastener 11 is an adjusting screw installed in the middle of the eccentric wheel 3. The shaft of the adjusting screw passes through the middle of the eccentric wheel 3 along the eccentric shaft 7. One end of the adjusting screw is threaded to the slider 19. The cap of the adjusting screw is pressed against the end surface of the eccentric wheel 3. When the adjusting screw is tightened, the cap of the adjusting screw will press the eccentric wheel 3 against the surface of the slider 19, locking the position of the eccentric wheel 3.

[0029] Specifically, the adjustment hole 4 is a countersunk hole, including an inner hole that penetrates the housing 1 axially and a countersunk head located at one end of the inner hole. The countersunk head is larger than the inner hole, and the part where the inner hole and the countersunk head meet forms a stepped surface. The core 9 of the eccentric wheel 3 extends into the inner hole, and the head 8 of the eccentric wheel 3 is located inside the countersunk head and pressed against the surface of the countersunk hole stepped surface. During the rotation of the core 9, the clamping force is transmitted by contacting the inner wall of the inner hole.

[0030] Furthermore, such as Figure 4 and Figure 5 As shown, a U-shaped groove 12 is formed at the bottom of the housing 1 corresponding to the position of each guide wheel 2. The opening direction of the U-shaped groove 12 is perpendicular to the rotation axis 5 of the guide wheel 2, and the guide wheel 2 is disposed in the U-shaped groove 12. A guide wheel fastener 16 passes through the U-shaped groove 12, and the guide wheel fastener 16 passes through the center of the guide wheel 2 to roll onto the housing 1. A bearing 13 is installed between the guide wheel 2 and the guide wheel fastener 16 to reduce the friction between the guide wheel 2 and the guide wheel fastener 16 when the guide wheel 2 rotates.

[0031] Furthermore, C-shaped buckles 14 are provided on both sides of the bearing 13 to fix the axial position of the bearing 13 to the outside of the guide wheel fastener 16, providing a certain axial support for the bearing 13. Furthermore, a spacer ring 15 is connected between the bearing 13 and the groove wall of the U-shaped groove 12 to adjust the gap between the bearing 13 and the groove wall, reducing the wear of the housing 1 on the side of the bearing 13.

[0032] Example 2: Figure 7 The diagram shows a schematic of a guide rail assembly including the aforementioned roller connectors, used in the upper and lower die closing mechanism of a stamping system processing equipment. It includes two vertically arranged guide rails 18 and a slider 19 installed between the two guide rails 18. The slider 19 is connected to the bottom of the upper die and is vertically guided by a strip / column guide located in the middle of the slider 19. Driven by a driving component, it moves vertically along the guide rails 18. At least one set of the aforementioned roller connectors is installed on each side along the sliding direction of the slider 19. The guide wheel 2 of each set of roller connectors rolls in contact with the guide rails 18 and is connected to the slider 19 via a press-fit fastener 11.

[0033] During equipment installation, roughly position the roller connector. Rotate the eccentric wheel 3, and the roller connector will adjust to the direction of the guide rail 18 until the guide wheel 2 contacts the surface of the guide rail 18 and the clamping force gradually increases. Then, install the pressing fastener 11 to fix the roller connector to the side of the slider 19, while simultaneously locking the position of the eccentric wheel 3 on the housing 1, maintaining contact between the guide wheel 2 and the guide rail 18. During operation, the guide wheel 2 and the guide rail 18 are in rolling contact, and the guide rail 18 provides very little resistance to the movement of the guide wheel 2. This ensures contact between the guide wheel 2 and the guide rail 18 while increasing the smoothness of the slider 19's movement.

[0034] Furthermore, the housing 1 is provided with a connecting hole and a fastening connector 17. The fastening connector 17 passes through the connecting hole and is connected to the slider 19. Both the fastening connector 17 and the guide wheel fastener 16 are bolts, which are used to position the roller connector on the slider 19 and strengthen the connection between the roller connector and the slider 19.

[0035] Furthermore, the eccentric wheel 3 includes a tail portion 10 extending from the inner side of the core portion 9 along the connection direction. The surface of the slider 19 opposite to the eccentric wheel 3 is provided with a positioning hole for the tail portion 10 to extend into. The positioning hole can quickly position the eccentric wheel 3 relative to the slider 19, thereby allowing the connection position of the press-fit fastener 11 and the slider 19 to be determined more quickly.

[0036] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A roller-type connecting piece for the mating connection of a guide rail (18) and a sliding block (19), characterized in that The utility model relates to a rolling connection device, including: A shell (1) is connected to a sliding block (19), and an adjusting hole (4) is formed in the shell (1) along a connecting direction; At least one set of guide wheels (2) are arranged in the shell (1) and rotate along a rotating shaft (5); An eccentric wheel (3) is arranged in the adjusting hole (4) and has a head (8) that is pressed against the surface of the shell (1), the eccentric wheel (3) has a central shaft (6) and an eccentric shaft (7), the central shaft (6) and the eccentric shaft (7) extend in parallel with the rotating shaft (5) of the guide wheel (2), the central shaft (6) is located at the center of the outer contour of the eccentric wheel (3), and the eccentric shaft (7) is offset from the central shaft (6); the eccentric wheel (3) can rotate around the eccentric shaft (7) as the center, and the outer contour of the part of the eccentric wheel (3) that extends into the adjusting hole (4) is in contact with the inner hole wall of the adjusting hole (4); and a press-fit fastener (11) that is connected to the sliding block (19) at one end and is press-fit to the surface of the head (8) of the eccentric wheel (3) at the other end.

2. A roller link as claimed in claim 1, wherein: The press-fit fastener (11) is an adjusting screw, one end of the adjusting screw passes through the eccentric shaft (7) of the eccentric wheel (3) and is threadedly connected to the sliding block (19), and the cap portion of the adjusting screw is press-fit to the head (8) of the eccentric wheel (3).

3. A roller link as claimed in claim 1, wherein: The eccentric wheel (3) includes the head (8) and a core portion (9) from the outside to the inside along the connecting direction, and the core portion (9) extends into the adjusting hole (4).

4. A roller link as claimed in claim 3, wherein: The adjusting hole (4) is a counterbore, and the head (8) of the eccentric wheel (3) is arranged in the counterbore portion of the counterbore.

5. A roller link as claimed in claim 1, wherein: The central shaft (6) is offset from the eccentric shaft (7) by 1-2 mm.

6. A roller link as claimed in claim 1, wherein: A U-shaped groove (12) is formed in the bottom of the shell (1) corresponding to the position of each guide wheel (2); a guide wheel fastener (16) is arranged in the U-shaped groove (12) and passes through the center of the guide wheel (2), and a bearing (13) is arranged between the guide wheel (2) and the guide wheel fastener (16).

7. A roller link as claimed in claim 6, wherein: A spacer ring (15) is arranged between the bearing (13) and the groove wall of the U-shaped groove (12).

8. A guide rail assembly comprising two parallel guide rails (18) and a slider (19) mounted between the guide rails (18), characterized in that: At least one set of rolling connection devices as claimed in any one of claims 1-7 are arranged on both sides of the sliding direction of the sliding block (19), the guide wheels (2) of each set of rolling connection devices are in rolling contact with the guide rail (18) and are connected to the sliding block (19) through the press-fit fastener (11).

9. The guide rail assembly of claim 8, wherein: A connecting hole and a fastening connecting piece (17) are arranged on the shell (1), and the fastening connecting piece (17) passes through the connecting hole and is connected to the sliding block (19).

10. The guide rail assembly of claim 8, wherein: The eccentric wheel (3) includes a tail portion (10) that extends to the sliding block (19) along the connecting direction, the tail portion (10) is coaxially arranged with the eccentric shaft (7), and the surface of the sliding block (19) opposite to the eccentric wheel (3) is provided with a positioning hole into which the tail portion (10) extends.

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