CN-224209059-U - Dental canal regulating mechanism

Abstract

The utility model relates to a tooth pipe adjusting mechanism which is arranged on a cold header body and comprises a rotating shaft serving as a power source, wherein a main bevel gear is fixedly connected to the rotating shaft, an auxiliary bevel gear is meshed with the main bevel gear, a spline shaft is fixedly connected to the auxiliary bevel gear, a spline sleeve is sleeved outside the spline shaft, a first straight gear is arranged on the outer ring of the spline sleeve, a rear baffle and a front baffle are respectively arranged at two ends of the spline sleeve, the first straight gear and a second straight gear on a tooth pipe are meshed with each other to transmit torsion force, a sleeve part which can mutually touch the rear baffle is arranged on the tooth pipe, external threads are arranged on the tooth pipe, an internal thread workpiece is connected through the external threads, and a long ejector rod is arranged in the tooth pipe. The novel structure greatly reduces the length of the spline shaft used as a power source, saves the cost of parts, and ensures that the parts are light in weight and convenient to operate.

Inventors

• CHEN JIANLIN
• YU HUAJIE
• ZHANG KAIFENG

Assignees

• 思进智能成形装备股份有限公司

Dates

Publication Date

20260508

Application Date

20250521

Claims (6)

1. 1. The utility model provides a dental tube adjustment mechanism installs on cold heading machine body (1), includes rotation axis (2) as power supply, fixedly connected with main bevel gear (3) on rotation axis (2), main bevel gear (3) meshing has vice bevel gear (4), characterized by, vice bevel gear (4) are fixedly connected with spline shaft (5), spline housing (6) have been cup jointed to spline shaft (5) outside, the outer lane of spline housing (6) is provided with first straight gear (7), the both ends of spline housing (6) are provided with backplate (8) and preceding baffle (9) respectively, second straight gear (11) intermeshing transmission torsional force on first straight gear (7) and dental tube (10), be provided with on dental tube (10) with sleeve portion (12) that backplate (8) can touch each other, be provided with external screw thread (13) on dental tube (10), be connected with internal thread work piece (14) through external screw thread (13), dental tube (10) are provided with ejector pin (15).
2. 2. The dental canal adjusting mechanism according to claim 1, characterized in that the tailgate (8) is rotatably connected with the spline housing (6) by means of a rolling bearing (16).
3. 3. The dental canal adjusting mechanism according to claim 1, characterized in that the front baffle (9) is rotatably connected with the spline housing (6) by means of a rolling bearing (16).
4. 4. The dental canal adjusting mechanism according to claim 1, wherein the sleeve part (12) is provided on an end surface of the dental canal (10), the sleeve part (12) and the dental canal (10) being two separate parts, which are rigidly integrated by welding.
5. 5. The dental canal regulating mechanism according to claim 1, characterized in that an intermediate transmission rod (17) is arranged behind the long ejector rod (15), and an ejector rod (18) is arranged behind the intermediate transmission rod (17).
6. 6. The dental canal adjusting mechanism according to claim 1, characterized in that the long ejector rod (15) is in clearance fit with the dental canal (10).

Description

Dental canal regulating mechanism Technical Field The utility model relates to the technical field of manufacturing of cold header, in particular to a dental tube adjusting mechanism. Background The tooth pipe adjusting mechanism on the cold header is used for adjusting the length of a part to be upsetted, which can enter the die, and the length of the part which can enter the die determines the length of the part which can be upsetted, and the tooth pipe adjusting mechanism needs to work once when the part with different lengths is replaced each time. When producing the same batch of parts, the dental canal adjusting mechanism does not need to work. The method has the specific principle that a part to be upsetted is placed in a die, an ejector rod is pushed, the ejector rod pushes a middle transmission rod, the middle transmission rod pushes a long ejector rod, when the part is pushed to a certain distance, the middle transmission rod is blocked by a dental tube sleeved outside the long ejector rod (the dental tube is a hollow tube with long threads and is called as a dental tube), so that the dental tube is required to retreat leftwards under the action of a dental tube adjusting mechanism, and the part to be upsetted can completely enter the die. Referring to fig. 3, in the dental tube adjusting mechanism in the prior art, the sleeve part welded with the dental tube is driven to rotate by the lengthening gear tube, so that the dental tube can be finally converted into an axial left-right movement. Because the axial movement of the tooth tube always needs to be meshed with the lengthening gear tube, and the length of the lengthening gear tube is at least the maximum displacement distance of the tooth tube, the lengthening gear tube serving as a power source in the prior art needs to be quite long, the lengthening gear tube with the structure has high processing cost, and the weight of the lengthening gear tube does not meet the requirement of part weight. Disclosure of Invention The present utility model is directed to a dental canal adjusting mechanism, which solves the above-mentioned problems. In order to solve the technical problems, the tooth pipe adjusting mechanism is arranged on a cold header body and comprises a rotating shaft serving as a power source, a main bevel gear is fixedly connected to the rotating shaft, an auxiliary bevel gear is meshed with the main bevel gear, the auxiliary bevel gear is fixedly connected with a spline shaft, a spline housing is sleeved outside the spline shaft, a first straight gear is arranged on the outer ring of the spline housing, a rear baffle and a front baffle are respectively arranged at two ends of the spline housing, the first straight gear and a second straight gear on a tooth pipe are meshed with each other to transmit torsion force, a sleeve part capable of mutually touching the rear baffle is arranged on the tooth pipe, an external thread is arranged on the tooth pipe, an internal thread workpiece is connected to the tooth pipe through the external thread, and a long ejector rod is arranged in the tooth pipe. Compared with the prior art, the novel structure has the advantages that the length of the spline shaft serving as a power source is greatly reduced, the cost of parts is saved, and the parts are light and convenient to operate. As an improvement of the utility model, the tailgate is rotatably connected to the spline housing by a rolling bearing. The design is selected to ensure that when parts to be upsetted with different lengths are to be replaced, the tooth tube retreats (leftwards), the sleeve part on the tooth tube is firmly attached to the rear baffle plate, the spline housing is pushed to retreat (leftwards) along the spline shaft, and in the retreating process, the rear baffle plate and the tooth tube can synchronously rotate, so that the friction force of the rolling bearing can be greatly reduced. As an improvement of the utility model, the front baffle is rotatably connected with the spline housing through a rolling bearing. The design is selected so that when parts to be upsetted with different lengths are to be replaced, the dental tube advances (rightwards), the sleeve part on the dental tube is firmly attached to the front baffle plate, the spline housing is pushed to advance (rightwards) along the spline shaft, and in the advancing process, the rear baffle plate and the dental tube can synchronously rotate, so that the friction force of the rolling bearing can be greatly reduced. As an improvement of the present utility model, the sleeve portion is provided on an end face of the dental canal, and the sleeve portion and the dental canal are two independent parts and are welded into a rigid integral body. The design is selected for the purpose that as another implementation mode, the sleeve part can be fixed on the dental tube in a welding mode, when the second straight gear on the sleeve part is damaged, only the sleeve part can be