Automatic feeding and discharging device of thread rolling machine

Abstract

The utility model discloses a kind of automatic feeding and discharging devices of thread rolling machine for enabling three-axis thread rolling machine to be able to full-automatic operation. The device provides feeding, and the first step of discharging is completed by the ejecting mechanism of three-axis thread rolling machine, and subsequent discharging is completed by the device, so that staff only needs to manage the situation of feeding hopper and discharging hopper, so that thread rolling machine can continue to operate. The automatic feeding and discharging device of thread rolling machine comprises: a dual-purpose conveying groove, the conveying outlet of the dual-purpose conveying groove is aligned with the thread rolling machine, the bottom of the dual-purpose conveying groove is a flap, a flap driving device is arranged above the dual-purpose conveying groove, and a discharging conveyor belt is arranged below the dual-purpose conveying groove.

Description

Technical Field

[0001] This utility model relates to the field of automated screw production, specifically to an automatic loading and unloading device for a thread rolling machine. Background Technology

[0002] A thread rolling machine is a mechanical device used to process threads, widely used in industries such as machinery manufacturing, automotive parts, and building hardware. It produces high-precision internal and external threads on the surface of metal bars or tubes through a rolling process. Compared to traditional cutting methods, thread rolling machines offer advantages such as high efficiency, good thread strength, and high surface finish. Common types of thread rolling machines include flat-plate thread rolling machines, planetary thread rolling machines, and three-axis thread rolling machines, suitable for processing workpieces of different specifications and materials. Unlike the relatively traditional flat-plate thread rolling machine (also widely known as a thread rolling mill), the three-axis thread rolling machine is more suitable for metal bars with larger diameters. To automate the processing of metal bars, an automatic loading and unloading device needs to be designed to work with the three-axis thread rolling machine. Summary of the Invention

[0003] This invention relates to an automatic loading and unloading device for a three-axis thread rolling machine, designed to enable fully automatic operation. The device provides loading, and the three-axis thread rolling machine's built-in ejection mechanism completes the first step of unloading. The device then handles subsequent unloading, allowing operators to manage only the loading and unloading hoppers for continuous operation of the thread rolling machine.

[0004] The automatic loading and unloading device for the thread rolling machine includes: The combined conveyor trough has its outlet aligned with the thread rolling machine. The bottom of the combined conveyor trough is a hinged plate. A hinged plate drive device is installed above the combined conveyor trough, and a feeding conveyor belt is installed below the combined conveyor trough. A pushing mechanism is installed at the tail end of the combined conveyor trough. A single feeding hopper is provided on the side of the combined conveyor trough; A guide plate is installed between the unloading conveyor belt and the combined conveyor trough, and an unloading trough is installed on the side of the unloading conveyor belt.

[0005] The automatic loading and unloading device for the thread rolling machine of this utility model works as follows: First, the metal rods to be rolled are placed into a single loading hopper manually or automatically. A single control device on the front of the loading hopper controls the metal rods to roll into the shared conveyor trough one at a time. A pushing mechanism pushes the metal rods into the three-axis thread rolling machine, waiting for the rolling process to complete. After rolling, the three-axis thread rolling machine automatically ejects the rolled metal rods, with the ejection direction towards the shared conveyor trough. At this time, the flap drive device drives the flap at the bottom of the shared conveyor trough to open downwards, allowing the rolled metal rods to fall onto the unloading conveyor belt below and be discharged along the conveyor belt.

[0006] Preferably, the flap that also serves as a conveyor trough includes two mirror-symmetrically arranged parts, with the plane of symmetry being the vertical plane of the conveying direction. The single-sided flap includes: a rotating rod hinged to the combined conveyor trough, the flap surface fixed on the rotating rod, and a drive arm extending radially from the rotating rod; The two movable plates on the left and right sides form a V-shaped structure, which can effectively determine the conveyor axis.

[0007] The flap drive device and drive arm transmission cause the rotating rod to rotate circumferentially, thereby adjusting the fit of the flap surface.

[0008] A portal frame is installed on the front side of the dual-purpose conveyor trough for the connection of rotating rods, while also avoiding the loading and unloading area of ​​metal bars, thereby maintaining the structural stability of the entire dual-purpose conveyor trough.

[0009] A vertical mounting plate is installed on the rear side of the combined conveyor trough. Four through holes are provided on the vertical surface of the mounting plate. The two middle holes are used to install the telescopic ends of the drive cylinders and the long push rods of the pushing mechanism. The top surface of the vertical surface of the mounting plate is used to install the telescopic cylinders of the flap drive device.

[0010] Preferably, the flap drive device includes: a vertically arranged telescopic cylinder, a second hinge seat is provided on the telescopic end of the telescopic cylinder, a first connecting arm and a second connecting arm are connected to the second hinge seat, and the first connecting arm and the second connecting arm are respectively connected to the drive arms of the two flaps.

[0011] Because the connecting arm on the second hinged seat is hinged to the flap, the flap can be opened when the telescopic cylinder of the flap drive device retracts, allowing the metal bar on the flap to pass through the bottom of the combined conveyor chute. When the telescopic cylinder of the flap drive device extends, the flap returns to its V-shaped structure.

[0012] Preferably, the pushing mechanism includes: a long push rod and a drive cylinder; The axes of the long push rod and the drive cylinder are in the same vertical plane. A connecting block is provided on the telescopic end of the drive cylinder. The connecting block is fixed to the end of the long push rod. The long push rod is coaxial with the conveying axis of the combined conveying trough.

[0013] Preferably, a single feeding hopper includes: a hopper with an opening on one side and a bottom inclined towards the opening side, and a rising push block provided on the opening side; a telescopic cylinder is provided at the bottom of the hopper, and the telescopic end of the telescopic cylinder is driven by the rising push block. The plane containing the top surface of the hopper is the installation plane, and a single control device is installed between the opening side and the combined conveying trough.

[0014] Preferably, the single control device includes: an inclined base plate, with hinged lugs on both sides of the inclined base plate; and a blocking flap on the inclined base plate. The blocking flap includes: a rotating rod and a flap surface. The flap surface is fixed on the rotating rod. The rotating rod is hinged to a hinge lug. A radially extending drive arm is fixed to one end of the rotating rod. A third telescopic cylinder is fixed to the hinge lug on the same side. The telescopic end of the third telescopic cylinder cooperates with the drive arm.

[0015] When the third telescopic cylinder retracts, the flap of the blocking flap will rotate and release the metal bar in the triangular area. When it extends, the flap of the blocking flap, the hinged ear plate, and the inclined base plate form a triangular area (side view).

[0016] Preferably, the hinged lug, the movable plate, and the inclined base plate form a triangular region. The length of the inclined base plate covered by the triangular region is greater than 1.2 times the diameter of the metal rod and less than or equal to 2 times the diameter of the metal rod. Controlling the length of the inclined base plate portion forming the triangular region helps control the number of metal rods that can be accommodated within the triangular region, thereby avoiding the problem of having two metal rods placed in this region at one time, which could lead to abnormal operation of subsequent components.

[0017] The beneficial effects of this utility model are as follows: by utilizing a combined conveyor trough, it cleverly combines consistent loading and unloading directions, meeting the loading and unloading requirements of a three-axis thread rolling machine while avoiding the need for a robotic arm or a telescopic cylinder linkage device with multiple degrees of freedom. It accomplishes complex requirements with a simple structure, and the overall structure of the device is simple and easy to use. Attached Figure Description

[0018] Figure 1 Diagram showing the device of this utility model in conjunction with a three-axis thread rolling machine; Figure 2 Assembly diagram of the device on the left side of this utility model; Figure 3 Assembly diagram of the device on the right side of this utility model; In the diagram: 1. Three-axis thread rolling machine; 2. Single feeding hopper; 201. Blocking flap; 202. Third telescopic cylinder; 203. Inclined bottom plate; 204. Rising push block; 205. L-shaped groove; 3. Automatic loading and unloading device for thread rolling machine; 301. Combined conveying trough; 302. Gantry frame; 303. Rotating rod; 304. Drive arm; 305. First connecting arm; 306, 307. Vertically set telescopic cylinder; 308. Drive cylinder; 309. Guide plate; 310. Drive motor; 311. Long push rod; 4. Feeding trough; 5. Metal bar stock to be threaded; 6. Metal bar stock after thread rolling. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0020] Example 1 like Figure 1 , Figure 2 and Figure 3 The automatic loading and unloading device 3 for the thread rolling machine shown includes: a combined conveyor trough, the conveyor outlet of the combined conveyor trough being aligned with the thread rolling machine, the bottom of the combined conveyor trough being a hinged plate, a hinged plate driving device being provided above the combined conveyor trough, and a feeding conveyor belt being provided below the combined conveyor trough; a pushing mechanism being provided at the tail end of the combined conveyor trough. A single feeding hopper 2 is provided on the side of the combined conveying trough; A guide plate 309 is installed between the unloading conveyor belt and the combined conveyor trough, and an unloading trough 4 is installed on the side of the unloading conveyor belt. For example... Figure 2 and Figure 3 The drive motor 310 of the feeding conveyor belt shown is located at the end of the feeding direction of the automatic feeding and unloading device 3 of the thread rolling machine.

[0021] The automatic loading and unloading device for the thread rolling machine of this utility model works as follows: First, the metal rod 5 to be rolled into wire is placed into a single loading hopper manually or automatically. A single control device on the front of the single loading hopper controls the metal rod to roll into the shared conveyor trough one at a time. A pushing mechanism pushes the metal rod into the three-axis thread rolling machine 1, waiting for the rolling to complete. After the rolling is complete, the three-axis thread rolling machine 1 automatically ejects the rolled metal rod 6, with the ejection direction towards the shared conveyor trough. At this time, the flap drive device drives the flap at the bottom of the shared conveyor trough to open downwards, allowing the rolled metal rod 6 to fall onto the unloading conveyor belt below and be unloaded along the conveyor belt.

[0022] The flap that serves as a conveyor trough 301 includes two mirror-symmetrical parts, with the plane of symmetry being the vertical plane of the conveying direction. The single-sided flap includes: a rotating rod 303, which is hinged to the combined conveyor trough, the flap surface is fixed on the rotating rod, and a drive arm 304 extends radially from the rotating rod; The two movable plates on the left and right sides form a V-shaped structure, which can effectively determine the conveyor axis.

[0023] The flap drive device and drive arm transmission cause the rotating rod to rotate circumferentially, thereby adjusting the fit of the flap surface.

[0024] A portal frame 302 is provided on the front side of the dual-purpose conveyor trough for the connection of rotating rods, while also avoiding the loading and unloading area of ​​metal bars, thereby maintaining the structural stability of the entire dual-purpose conveyor trough.

[0025] A vertical mounting plate is installed on the rear side of the combined conveyor trough. Four through holes are provided on the vertical surface of the mounting plate. The two middle holes are used to install the telescopic ends of the drive cylinders and the long push rods of the pushing mechanism. The top surface of the vertical surface of the mounting plate is used to install the telescopic cylinders of the flap drive device.

[0026] The trapdoor drive device includes: a vertically arranged telescopic cylinder 307, a second hinge seat on the telescopic end of the telescopic cylinder, a first connecting arm 305 and a second connecting arm connected to the second hinge seat, and the first connecting arm and the second connecting arm respectively connected to the drive arms of the two trapdoors.

[0027] Because the connecting arm on the second hinged seat is hinged to the flap, the flap can be opened when the telescopic cylinder of the flap drive device retracts, allowing the metal bar on the flap to pass through the bottom of the combined conveyor chute. When the telescopic cylinder of the flap drive device extends, the flap returns to its V-shaped structure.

[0028] The pushing mechanism includes: a long push rod 311 and a drive cylinder 308; The axes of the long push rod and the drive cylinder are in the same vertical plane. A connecting block is provided on the telescopic end of the drive cylinder. The connecting block is fixed to the end of the long push rod. The long push rod is coaxial with the conveying axis of the combined conveying trough.

[0029] A single feeding hopper 2 includes: a hopper with an opening on one side and its bottom inclined towards the opening side; a rising push block 204 is provided on the opening side; a telescopic cylinder is provided at the bottom of the hopper, and the telescopic end of the telescopic cylinder is driven by the rising push block; L-shaped grooves 205 are provided on both sides of the rising push block 204 for fixing the vertical movement track of the rising push block 204. This configuration allows the hopper to be adjustable to accommodate metal bars of different lengths.

[0030] The plane containing the top surface of the hopper is the installation plane, and a single control device is installed between the opening side and the combined conveying trough.

[0031] The single control device includes: an inclined base plate 203, with hinged lugs on both sides of the inclined base plate; and a blocking flap 201 on the inclined base plate. The blocking flap includes: a rotating rod and a flap surface. The flap surface is fixed on the rotating rod. The rotating rod is hinged to a hinge lug. A radially extending drive arm is fixed to one end of the rotating rod. A third telescopic cylinder is fixed to the hinge lug on the same side. The telescopic end of the third telescopic cylinder cooperates with the drive arm.

[0032] When the third telescopic cylinder 202 retracts, the flap of the blocking flap will be rotated and then release the metal bar in the triangular area. When it extends, the flap of the blocking flap, the hinged ear plate, and the inclined base plate form a triangular area (side view).

[0033] The hinged lugs, movable plate, and inclined base plate form a triangular region. The length of the inclined base plate covered by this triangular region is greater than 1.2 times the diameter of the metal rod and less than or equal to 2 times the diameter of the metal rod. Controlling the length of the inclined base plate portion forming the triangular region helps control the number of metal rods that can be accommodated within the triangular region, thus avoiding the problem of having two metal rods placed in this region at the same time, which could cause abnormalities in the operation of subsequent components.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic loading and unloading device for a thread rolling machine, characterized in that, include: The combined conveyor trough has its outlet aligned with the thread rolling machine. The bottom of the combined conveyor trough is a hinged plate. A hinged plate drive device is installed above the combined conveyor trough, and a feeding conveyor belt is installed below the combined conveyor trough. A pushing mechanism is installed at the tail end of the combined conveyor trough. A single feeding hopper is provided on the side of the combined conveyor trough; A guide plate is installed between the unloading conveyor belt and the combined conveyor trough, and an unloading trough is installed on the side of the unloading conveyor belt.

2. The automatic loading and unloading device for the thread rolling machine according to claim 1, characterized in that, The flap that doubles as a conveyor trough consists of two mirror-symmetrical parts, left and right, with the plane of symmetry being the vertical plane of the conveying direction. The single-sided flap includes: a rotating rod hinged to the combined conveyor trough, the flap surface fixed on the rotating rod, and a drive arm extending radially from the rotating rod; The two movable panels on the left and right sides form a V-shaped structure; The flap drive device and drive arm transmission cause the rotating rod to rotate circumferentially, thereby adjusting the fit of the flap surface.

3. The automatic loading and unloading device for the thread rolling machine according to claim 2, characterized in that, The trapdoor drive device includes: a vertically arranged telescopic cylinder, a second hinge seat on the telescopic end of the telescopic cylinder, a first connecting arm and a second connecting arm connected to the second hinge seat, and the first connecting arm and the second connecting arm respectively connected to the drive arms of the two trapdoors.

4. The automatic loading and unloading device for the thread rolling machine according to claim 2, characterized in that, The pushing mechanism includes: a long push rod and a drive cylinder; The axes of the long push rod and the drive cylinder are in the same vertical plane. A connecting block is provided on the telescopic end of the drive cylinder. The connecting block is fixed to the end of the long push rod. The long push rod is coaxial with the conveying axis of the combined conveying trough.

5. The automatic loading and unloading device for a thread rolling machine according to claim 1, characterized in that, A single feeding hopper includes: a hopper with an opening on one side and a bottom inclined towards the opening side, and a rising push block provided on the opening side; a telescopic cylinder is provided at the bottom of the hopper, and the telescopic end of the telescopic cylinder is driven by the rising push block. The plane containing the top surface of the hopper is the installation plane, and a single control device is installed between the opening side and the combined conveying trough.

6. The automatic loading and unloading device for a thread rolling machine according to claim 5, characterized in that, A single control device includes: an inclined base plate, with hinged lugs on both sides of the inclined base plate; and a blocking flap on the inclined base plate. The blocking flap includes: a rotating rod and a flap surface. The flap surface is fixed on the rotating rod. The rotating rod is hinged to a hinge lug. A radially extending drive arm is fixed to one end of the rotating rod. A third telescopic cylinder is fixed to the hinge lug on the same side. The telescopic end of the third telescopic cylinder cooperates with the drive arm.

7. The automatic loading and unloading device for a thread rolling machine according to claim 6, characterized in that, The hinged lugs, movable plate, and inclined base plate form a triangular area. The length of the inclined base plate covered by the triangular area is greater than 1.2 times the diameter of the rod and less than or equal to 2 times the diameter of the rod.

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