Gate assembly for tufting machine

• US 7,007,617 B2
• Filed: 11/17/2004
• Issued: 03/07/2006
• Est. Priority Date: 11/26/2003
• Status: Active Grant

• Current Assignee: Card-Monroe Corporation
• Original Assignee: Card-Monroe Corporation
• Inventors: Johnston, Kendall
• Primary Examiner(s): Izaguirre, Ismael
• Application Number:
  US10/990,734
• Publication Number:
  US 20050109253A1
• Time in Patent Office: 475 Days
• Field of Search: 112 805- 806, 112/475.08
• US Class Current: 112/80.51
• CPC Class Codes: D05C 15/20 Arrangements or devices, e.g. needles, for inserting loops; Driving mechanisms therefor
• CPC Class Codes: D05C 15/22 Loop-catching arrangements, e.g. loopers; Driving mechanisms therefor
• CPC Class Codes: D05C 15/24 Loop cutters; Driving mechanisms therefor
• CPC Class Codes: D05D 2207/02 Pneumatic or hydraulic devices

Abstract

A tufting machine includes a hook apparatus, which has gates and hooks. The hook apparatus has connectors that are coupled to the gates and actuators. The actuators can be actuated to move both the connectors and gates.

Claims

1. A connector for connecting an output shaft of an actuator to a gate of a tufting machine, the connector comprising an actuator connector portion configured to be connected to an output shaft of an actuator, an extension portion extending forwardly from and at an angle with respect to the actuator connector portion along a direction transverse to the axial direction, and a slot portion connected to the extension portion and defining a gate connector slot extending from the extension portion and configured to engage the gate of the tufting machine, the gate connector slot including lateral walls extending along lateral sides of a portion of the gate connected to the gate connector slot.

2. The connector of claim 1, wherein the connector slot further comprises a recess between the lateral walls that accommodates a portion of the gate connected to the gate connector slot.

3. The connector of claim 1, wherein the lateral walls prevent rotation of the gate about the longitudinal axis of the gate and prevent substantial lateral movement of the gate relative to the connector.

4. The connector of claim 2, wherein the connector is substantially made of plastic.

5. The connector of claim 2, wherein a portion of the longitudinal axis of the gate is disposed between a portion of the lateral walls.

6. The connector of claim 1, wherein the gate connector slot has a width greater than the width of the gate by less than about 0.003 inches.

7. The connector of claim 1, wherein the gate connector slot has a width that is about 0.001 inches greater than the width of the gate.

8. The connector of claim 1, wherein the gate connector slot comprises a notch portion and a recess, the gate comprising a notch and a connector gate portion, the notch of the gate accommodates the notch portion and the connector gate portion is within the recess.

9. A hook mounting arrangement for a tufting machine comprising:

a hook block rigidly supporting at least first and second hooks and slidably supporting at least first and second gates adjacent to the respective first and second hooks;

an actuator block supporting at least first and second actuators disposed respectively in first and second vertically offset rows;

a first connector comprising a first actuator connector portion connected to an output shaft of the first actuator, a first extension portion extending upwardly from the first actuator connector portion and a first slot portion defining a first gate connector slot extending from the first extension portion toward the first gate and adapted to be engaged by the first gate to connect the first connector to the first gate; and

a second connector comprising a second actuator connector portion connected to an output shaft of the second actuator, a second extension portion extending vertically downwardly from the second actuator connector portion and a second slot portion defining a second gate connector slot extending from the second extension portion toward the second gate and adapted to be engaged by the second gate to connect the second connection to the second gate;

the first and second actuators being configured to reciprocally drive the first and second connectors in an axial direction, wherein the first and second actuator connector portions are interleaved with each other, such that the first and second gate connector slots are disposed substantially side-by-side, and are respectively connected to the output shafts of the first and second actuators with sufficient rigidity to prevent rotation of the first and second connectors about a generally horizontal axis.

10. The hook mounting arrangement of claim 9, wherein the at least one of the connectors has a length in the range of about 0.075 inches to 1 inch.

11. The hook mounting arrangement of claim 10, wherein a portion of the first extension portion and a portion of the second extension portion are separated a distance less than the width the gate.

12. The hook mounting arrangement of claim 9, wherein the first and second gate connector slots comprise a pair of walls defining a slot, each of the slots configured to receive a tufting gate such that the pair of walls prevent substantial rotation of the gate about the longitudinal axis of the gate and prevent substantial lateral movement of the gate relative to the respective first and second gate connector slots.

13. The hook mounting arrangement of claim 12, wherein there is no additional guide contacting the first and second connectors for preventing both rotation of the gate about the longitudinal axis of the gate and substantial lateral movement of the gate relative to the connector.

14. A hook mounting arrangement for a tufting machine comprising:

a hook support rigidly supporting at least first and second hooks and slidably supporting at least first and second gates adjacent to the respective first and second hooks;

an actuator block supporting at least first and second actuators disposed respectively in first and second vertically offset rows;

a first connector comprising a first actuator connector portion connected to an output shaft of the first actuator, a first extension portion extending vertically upwardly from the first actuator connector portion and a first slot portion extending from the first extension portion, the first slot portion defining a first gate connector slot including a notch in which one end of the first gate is received and including lateral walls extending adjacent to two lateral sides of the first gate; and

a second connector comprising a second actuator connector portion connected to an output shaft of the second actuator, a second extension portion extending vertically downwardly from the second actuator connector portion and a second slot portion extending from the second extension portion, the second slot portion defining a second gate connector slot including a notch within which one end of the second gate is received and including lateral walls extending adjacent to two lateral sides of the second gate;

the first and second actuators being configured to reciprocally drive the first and second connectors in an axial direction, wherein there is no additional guide contacting the first and second connectors for guiding the first and second connectors in the axial direction.

15. The hook mounting arrangement of claim 14, wherein the first and second actuator connector portions are respectively connected to the output shafts of the first and second actuators with sufficient rigidity to prevent rotation of the first and second connectors about a generally horizontal axis.

16. The hook mounting arrangement of claim 15, wherein at least one the connectors has a gate connector slot with a width greater than the width of the respective gate by less than about 0.002 inches and has a length in the direction of the axial direction in the range of about 0.075 inches to 1 inch.

17. A method of manufacturing a tufting machine comprising providing a fabric feed assembly for feeding a fabric appropriate for carpet in a feeding direction, mounting an array of needles for reciprocal motion along a needle direction which is transverse to the feeding direction, mounting a hook assembly for reciprocal motion in a hook direction which is transverse to the needle direction, aligning a plurality of hooks on the hook assembly with the needles, mounting a plurality of gates in alignment with the plurality of hooks for reciprocal motion relative to the hooks, mounting an array of actuators in series with the plurality of gates, connecting the actuators to the gates with a plurality of connectors, each of the connectors having an actuator connector portion mounted to an associated actuator, an extension portion extending from the associated actuator in a direction substantially transverse to the hook direction and terminating at a slot portion adjacent an end of one of the gates, the slot portion defining a slot within which the end of the gate is received and having a pair of lateral walls extending along lateral sides of the end of the gate.