Extension rod lathe double-sided cutting equipment

Abstract

The utility model provides double-sided cutting equipment capable of simultaneously cutting two ends, aiming at the problems that two ends of an extension rod for a sleeve need to be processed during cutting operation, and two lathes need to be used due to the fact that a clamping jaw cannot be universally used due to the fact that the diameter of one end of the extension rod is larger. The extension rod lathe double-face cutting equipment comprises an automatic feeding device, a machining device and a lathe using a penetrating type three-jaw chuck, a spindle box where the chuck is located is arranged in the middle of the lathe, and the moving track of the spindle box is perpendicular to the feeding track on the horizontal plane; the chuck feeding device is matched with the spindle box of the machining device and is arranged in the second machining station; the movable limiting device is matched with the chuck feeding device to work and is arranged in the first machining station; the discharging device and the movable limiting device are arranged in parallel, and the discharging device is used for discharging materials on the spindle box.

Description

Technical Field

[0001] This utility model relates to a cutting lathe, specifically to a double-sided cutting device for an extension rod lathe. Background Technology

[0002] Extension rods, also known as extension bars or extension arms, are an indispensable part of socket tool sets. Their main function is to be attached between the socket and the matching handle for removing and replacing bolts and nuts that are deeply embedded and inaccessible by the socket and handle alone. However, extension rods are typically machined in two separate steps due to their irregularly shaped ends. There is still room for optimization in this machining method, therefore, a double-sided machining device is proposed. Summary of the Invention

[0003] This invention addresses the issue that when cutting extension rods for sleeves, both ends need to be machined. Since the diameter of one end is larger, the grippers cannot be interchanged, requiring the use of two different lathes. Therefore, a double-sided cutting device capable of simultaneously cutting both ends is proposed.

[0004] This utility model provides a double-sided cutting device for an extension rod lathe, comprising: an automatic feeding device, a chuck feeding device, a processing device, a movable limit device, and a unloading device.

[0005] An automatic feeding device is used to automatically feed materials from the hopper into the processing device;

[0006] The processing device is a lathe with a through-type three-jaw chuck. The spindle box where the chuck is located is set in the middle of the lathe. The movement trajectory of the spindle box is perpendicular to the feeding trajectory on the horizontal plane.

[0007] With the vertical plane where the spindle box is located as the reference plane, the left side is the first machining position and the right side is the second machining position;

[0008] The chuck loading device is configured in conjunction with the spindle box of the processing device and is located in the second processing position.

[0009] The movable limit device is set in the first processing position in conjunction with the chuck feeding device;

[0010] The feeding device and the movable limit device are arranged in parallel to each other and are used to feed materials from the spindle box;

[0011] The cutting head is set in the first machining station and the second machining station.

[0012] Because both ends need to be machined, and depending on the actual machining requirements, it is possible to choose to machine only one end or both ends, the lathe used in the machining device can be a through-spindle lathe or a double-end lathe.

[0013] When using a through-spindle lathe, tool heads are installed on both sides of the spindle box. The tool heads are fixed in place, and their positions are set according to the actual machining requirements. When machining one end, the horizontal axes of the tool heads on both sides are not on the same axis, while when machining both ends, the horizontal axes of the tool heads on both sides are on the same axis.

[0014] When using a double-end lathe, the cutter head is set on the movable slide, so its position can be freely adjusted.

[0015] The automatic feeding device includes: a stepped feeder, used to lift materials from the hopper to the first conveyor belt, the stepped feeder consisting of several single steps and a return channel;

[0016] Lifters are provided on the bottom surface of a single step and at the connection between the cargo bin and the step. The lifters include a first baffle and a second baffle. The first baffle is parallel to the bottom surface of the cargo bin, and the second baffle is connected to the first baffle and perpendicular to it at 90°.

[0017] The bottom of the cargo hopper forms a 20° angle with the horizontal plane;

[0018] The return channel is located on the side of the steps, with its top opening connected to the side of the first conveyor belt and its bottom opening located on the upper side of the hopper.

[0019] The first conveyor belt uses two parallel cylindrical ring belts as the belt surface, and a first blocking device is set in the middle section of the first conveyor belt; the first blocking device is matched with the return channel of the stepped feeder.

[0020] The first blocking device includes a rotating device and a blocking plate. The rotating device is mounted above the surface of the first conveyor belt via a bracket, and the blocking plate is mounted on the rotating shaft of the rotating device. The blocking plate includes two parts: the first part is the outermost part, and its surface is perpendicular to the conveying direction of the first conveyor belt; the second part is between the first part and the rotating shaft, and its surface forms a 45° angle with the conveying direction of the first conveyor belt.

[0021] A triggering blocking block is provided at the end of the first conveyor belt; a horizontal transfer gripper device is provided on the upper side of the end of the first conveyor belt.

[0022] The horizontal transfer gripper device is used to transfer material from the first conveyor belt to the second conveyor belt;

[0023] The second conveyor belt is arranged parallel to the first conveyor belt. A limit plate is provided on the surface of the second conveyor belt, and a trigger sensor is provided at the starting point of the second conveyor belt.

[0024] The trigger sensor is a pair of infrared transceivers or a pair of Hall sensors.

[0025] The width of the first baffle is set to match the diameter of the extension rod, which is 1.5 times larger than the maximum diameter of the extension rod but less than 2 times. This makes it easy for excess extension rods to fall to the bottom each time they are lifted, and then be re-selected, so that only one extension rod enters the first conveyor belt each time.

[0026] The rotating device can use a pneumatic rotary cylinder, a hydraulic rotary cylinder, a geared motor, or a method of opening a limit groove on the support plate and hinged to the end of the telescopic cylinder to achieve the rotation of the blocking plate.

[0027] The first part of the baffle plate is used to stop the material from moving forward. When the baffle plate is in its working position, the material will be stopped, and excess material will slide down from the baffle plate into the return channel. At the same time, if the material is stacked together and moving along the first conveyor belt, it will be poured into the return channel from the inclined surface of the second part.

[0028] When using an infrared transceiver, through holes need to be made in the limit plate to ensure that the two through holes and the transceiver axis of the infrared sensor are coaxial. When using a Hall effect sensor, a limit plate made of plastic is required. The sensor signal is triggered when the horizontal transfer gripper places the material onto the second conveyor belt between the limit plates.

[0029] The triggering blocking block includes a floating plate and a fixed plate, with a micro switch between them. An infrared transceiver is also provided on the fixed plate, and a through hole is provided at the position corresponding to the infrared transceiver on the floating plate.

[0030] The extension rod has two ends, one with a smaller diameter than the rod body and the other with a larger diameter. Therefore, their positions need to be adjusted before being fed into the processing device. When the extension rod hits the trigger stop block, a microswitch is activated, causing the horizontal transfer gripper to start operating. Simultaneously, the infrared transceiver's detection is triggered. The larger-diameter end of the extension rod hitting the floating plate blocks the aperture, allowing the infrared transceiver to trigger a signal. Conversely, the smaller-diameter end, when mounted on the floating plate, fails to block the aperture and also fails to trigger the infrared transceiver's signal detection. This method determines which end is actually hitting the floating plate.

[0031] The horizontal transfer gripper device includes a horizontal sliding track, a horizontally positioned telescopic cylinder, a vertically positioned telescopic cylinder, a rotary cylinder, a gripper cylinder, and grippers.

[0032] The horizontal sliding track includes a slider, and the horizontal telescopic cylinder body is fixedly connected to the horizontal sliding track and arranged coaxially. The telescopic end is driven by the slider.

[0033] The cylinder body of the vertically set telescopic cylinder is set on the slider, with the telescopic end pointing vertically downward. A rotary cylinder is connected to the telescopic end, and the telescopic axis of the vertically set telescopic cylinder is coaxial with the rotation axis of the rotary cylinder.

[0034] The first and second ends of the rotary cylinder rotate relative to each other. The first end is connected to the vertically set telescopic cylinder, and the second end is connected to the cylinder body of the gripper cylinder.

[0035] Each gripper arm of the gripper cylinder is equipped with a gripper.

[0036] Preferably, the anti-fall adjustment device includes two horizontal telescopic cylinders. The first cylinder is positioned above the triggering block, and the second cylinder is positioned on the bracket where the first blocking device is located. The two horizontal telescopic cylinders are coaxial, and the vertical plane of their axis is the same as the vertical plane of the center of the first conveyor belt.

[0037] The main function of the anti-fall adjustment device is to adjust the center of gravity position of the extension rod when it is grabbed. Since it is impossible to determine which side of the extension rod is moving towards the triggering block, the result can only be known after the triggering block is triggered. Therefore, in addition to increasing the width of the gripper, the only thing that can be done is to adjust the specific position by extending two horizontal telescopic cylinders to prevent the extension rod from falling off the gripper when it rotates.

[0038] The chuck feeding device includes: a conveyor belt material handling gripper device, a positioning slot, and a positioning slot feeding device;

[0039] The conveyor belt material handling gripper device is used to transfer materials from the automatic feeding device to the upper side of the positioning groove, and the materials automatically fall into the positioning groove.

[0040] The positioning groove uses a rectangular block with a rectangular countersunk hole facing downwards on the top surface. The bottom surface of the countersunk hole is a circular arc groove. Taking the central axis of the circular arc groove as a reference, concentric through holes of the same diameter are opened on the vertical surface of the short side of the positioning groove. The through holes are connected to the countersunk hole.

[0041] The positioning slot feeding device uses a telescopic cylinder, and the movable axis of the positioning slot feeding device is coaxial with the through hole.

[0042] The chuck feeding device has a movable limit device whose movable axis is coaxial with the through hole.

[0043] The conveyor belt gripper device picks up material from the second conveyor belt of the automatic feeding device and transfers it horizontally to the upper side of the positioning groove, the top surface of which is flush with the upper surface of the second conveyor belt. In its first state, the grippers of the conveyor belt gripper device are open and spaced at the same distance from the baffles on the second conveyor belt for horizontal limiting. When material enters the area, the grippers retract, entering the second state. When the conveyor belt gripper device moves to the upper side of the positioning groove, it returns from the second state to the first state and releases the material.

[0044] The conveyor belt material handling gripper device includes: a horizontal transfer telescopic cylinder and a transfer gripper cylinder;

[0045] The cylinder body of the horizontal transfer telescopic cylinder is fixed on the lathe body or the frame of the automatic feeding device by a bracket. The telescopic end is equipped with a transfer gripper cylinder. The cylinder body of the transfer gripper cylinder is connected to the horizontal transfer telescopic cylinder. Each gripper arm of the gripper cylinder is equipped with a gripper. The mirror surface of the gripper is on the same vertical plane as the feeding axis of the automatic feeding device.

[0046] The beneficial effects of this utility model are as follows: simply place the material in the hopper and set the cutter head position, and this device can automatically process the extension rod, automatically identify the direction of the extension rod, and automatically process both ends. Attached Figure Description

[0047] Figure 1 Assembly diagram of the stepped feeder part of the automatic feeding device of this utility model;

[0048] Figure 2 Assembly diagram of the horizontal transfer gripper device of the automatic feeding device of this utility model;

[0049] Figure 3 Assembly diagram of the second conveyor belt input side of this utility model;

[0050] Figure 4 Assembly diagram of the second processing position side in the processing device of this utility model;

[0051] In the diagram: 1. Hopper, 2. Lifter, 3. Return channel, 4. First conveyor belt, 5. Baffle plate, 6. Triggering block, 7. First horizontal telescopic cylinder, 8. Second horizontal telescopic cylinder, 9. Second conveyor belt, 10. Gripper cylinder, 11. Rotary cylinder, 12. Vertical telescopic cylinder, 13. Horizontal telescopic cylinder, 14. Limit plate, 15. Trigger sensor, 16. Through-type three-grip chuck, 17. Cutter head, 18, 19. Positioning slot, 20. Positioning slot loading device, 21. Horizontal transfer telescopic cylinder, 22. Transfer gripper cylinder. Detailed Implementation

[0052] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example

[0053] The double-sided cutting equipment for extension rod lathe includes: an automatic feeding device, a chuck feeding device, a machining device, a movable limit device, and a unloading device.

[0054] An automatic feeding device is used to automatically feed materials from the hopper into the processing device;

[0055] The processing device is a lathe with a through-type three-jaw chuck 16. The spindle box where the chuck is located is set in the middle of the lathe. The movement trajectory of the spindle box is perpendicular to the feeding trajectory on the horizontal plane.

[0056] With the vertical plane where the spindle box is located as the reference plane, the left side is the first machining position and the right side is the second machining position;

[0057] The chuck loading device is configured in conjunction with the spindle box of the processing device and is located in the second processing position.

[0058] The movable limit device is set in the first processing position in conjunction with the chuck feeding device;

[0059] The feeding device and the movable limit device are arranged in parallel to each other and are used to feed materials from the spindle box;

[0060] Cutting head 17 is set in the first machining position and the second machining position.

[0061] In this embodiment, a through-type moving center lathe is used.

[0062] The unloading device uses a single telescopic cylinder, and the unloading device is coaxial with the unloading track 18. The unloading device is located in the first processing position, while the unloading track 18 is located in the second processing position.

[0063] like Figure 1 , Figure 2 and Figure 3 The automatic feeding device shown includes: a stepped feeder for lifting materials from the hopper 1 to the first conveyor belt 4, consisting of three single steps and a return channel;

[0064] A lifter 2 is provided on the bottom surface of a single step and at the connection between the cargo bin and the step. The lifter includes a first baffle and a second baffle. The first baffle is parallel to the bottom surface of the cargo bin, and the second baffle is connected to the first baffle and perpendicular to it at 90°.

[0065] The bottom of the cargo hopper forms a 20° angle with the horizontal plane;

[0066] The return channel 3 is located on the side of the step, with its top opening connected to the side of the first conveyor belt and its bottom opening located on the upper side of the hopper.

[0067] The first conveyor belt uses two parallel cylindrical ring belts as the belt surface, and a first blocking device is set in the middle section of the first conveyor belt; the first blocking device is matched with the return channel of the stepped feeder.

[0068] The first blocking device includes a rotating device and a blocking plate 5. The rotating device is mounted above the surface of the first conveyor belt via a bracket, and the blocking plate is mounted on the rotating shaft of the rotating device. The blocking plate includes two parts: the first part is the outermost end, and its surface is perpendicular to the conveying direction of the first conveyor belt; the second part is between the first part and the rotating shaft, and its surface forms a 45° angle with the conveying direction of the first conveyor belt.

[0069] A triggering blocking block 6 is provided at the end of the first conveyor belt; a horizontal transfer gripper device is provided on the upper side of the end of the first conveyor belt.

[0070] The horizontal transfer gripper device is used to transfer material from the first conveyor belt to the second conveyor belt;

[0071] The second conveyor belt 9 is arranged parallel to the first conveyor belt. A limit plate 14 is provided on the surface of the second conveyor belt 9, and a trigger sensor 15 is provided at the starting point of the second conveyor belt. In this embodiment, the trigger sensor 15 is a pair of infrared transceivers.

[0072] When using an infrared transceiver, a through hole needs to be made on the limit plate to make the two through holes and the transceiver axis of the infrared sensor coaxial.

[0073] The width of the first baffle is set to match the diameter of the extension rod, which is 1.5 times larger than the maximum diameter of the extension rod but less than 2 times. This makes it easy for excess extension rods to fall to the bottom each time they are lifted, and then be re-selected, so that only one extension rod enters the first conveyor belt each time.

[0074] The rotating device can use a pneumatic rotary cylinder, a hydraulic rotary cylinder, a geared motor, or a method of opening a limit groove on the support plate and hinged to the end of the telescopic cylinder to achieve the rotation of the blocking plate.

[0075] In this embodiment, a pneumatic rotary cylinder is selected as the rotating device.

[0076] The first part of the blocking plate 5 is used to block the material from moving forward. When the blocking plate is in its working position, the material will be stopped, and excess material will slide from the blocking plate into the return channel. At the same time, if the material is stacked together and moving along the first conveyor belt, it will be poured into the return channel from the inclined surface of the second part.

[0077] The triggering blocking block includes a floating plate and a fixed plate, with a micro switch between them. An infrared transceiver is also provided on the fixed plate, and a through hole is provided at the position corresponding to the infrared transceiver on the floating plate.

[0078] The extension rod has two ends, one with a smaller diameter than the rod body and the other with a larger diameter. Therefore, their positions need to be adjusted before being fed into the processing device. When the extension rod hits the trigger stop block, a microswitch is activated, causing the horizontal transfer gripper to start operating. Simultaneously, the infrared transceiver's detection is triggered. The larger-diameter end of the extension rod hitting the floating plate blocks the aperture, allowing the infrared transceiver to trigger a signal. Conversely, the smaller-diameter end, when mounted on the floating plate, fails to block the aperture and also fails to trigger the infrared transceiver's signal detection. This method determines which end is actually hitting the floating plate.

[0079] The horizontal transfer gripper device includes a horizontal sliding track, a horizontally positioned telescopic cylinder 13, a vertically positioned telescopic cylinder 12, a rotary cylinder 11, a gripper cylinder 10, and grippers.

[0080] The horizontal sliding track includes a slider, and the horizontal telescopic cylinder body is fixedly connected to the horizontal sliding track and arranged coaxially. The telescopic end is driven by the slider.

[0081] The cylinder body of the vertically set telescopic cylinder is set on the slider, with the telescopic end pointing vertically downward. A rotary cylinder is connected to the telescopic end, and the telescopic axis of the vertically set telescopic cylinder is coaxial with the rotation axis of the rotary cylinder.

[0082] The first and second ends of the rotary cylinder rotate relative to each other. The first end is connected to the vertically set telescopic cylinder, and the second end is connected to the cylinder body of the gripper cylinder.

[0083] Each gripper arm of the gripper cylinder is equipped with a gripper.

[0084] The anti-fall adjustment device includes two horizontal telescopic cylinders (the first horizontal telescopic cylinder is numbered 7 and the second horizontal telescopic cylinder is numbered 8). The first cylinder is located above the triggering blocking block, and the second cylinder is located on the bracket where the first blocking device is located. The two horizontal telescopic cylinders are coaxial, and the vertical plane of their axis is the same vertical plane as the center vertical plane of the first conveyor belt.

[0085] The main function of the anti-fall adjustment device is to adjust the center of gravity position of the extension rod when it is grabbed. Since it is impossible to determine which side of the extension rod is moving towards the triggering block, the result can only be known after the triggering block is triggered. Therefore, in addition to increasing the width of the gripper, the only thing that can be done is to adjust the specific position by extending two horizontal telescopic cylinders to prevent the extension rod from falling off the gripper when it rotates.

[0086] like Figure 4 The chuck feeding device shown includes: a conveyor belt material handling gripper device, a positioning groove 19, and a positioning groove feeding device 20;

[0087] The conveyor belt material handling gripper device is used to transfer materials from the automatic feeding device to the upper side of the positioning groove, and the materials automatically fall into the positioning groove.

[0088] The positioning groove uses a rectangular block with a rectangular countersunk hole facing downwards on the top surface. The bottom surface of the countersunk hole is a circular arc groove. Taking the central axis of the circular arc groove as a reference, concentric through holes of the same diameter are opened on the vertical surface of the short side of the positioning groove. The through holes are connected to the countersunk hole.

[0089] The positioning slot feeding device uses a telescopic cylinder, and the movable axis of the positioning slot feeding device is coaxial with the through hole.

[0090] The chuck feeding device has a movable limit device whose movable axis is coaxial with the through hole.

[0091] The conveyor belt gripper device picks up material from the second conveyor belt of the automatic feeding device and transfers it horizontally to the upper side of the positioning groove, the top surface of which is flush with the upper surface of the second conveyor belt. In its first state, the grippers of the conveyor belt gripper device are open and spaced at the same distance from the baffles on the second conveyor belt for horizontal limiting. When material enters the area, the grippers retract, entering the second state. When the conveyor belt gripper device moves to the upper side of the positioning groove, it returns from the second state to the first state and releases the material.

[0092] The conveyor belt material handling gripper device includes: a horizontal transfer telescopic cylinder and a transfer gripper cylinder; in this embodiment, it also includes a vertical adjustment telescopic cylinder.

[0093] The cylinder body of the horizontal transfer telescopic cylinder 21 is fixed to the lathe body by a bracket, and an inverted L-shaped bracket is provided on the telescopic end;

[0094] A vertical adjustment telescopic cylinder is installed at the top of the inverted L-shaped bracket. The telescopic end of the vertical adjustment telescopic cylinder passes through the inverted L-shaped bracket and connects to the second inverted L-shaped bracket. The cylinder body of the transfer gripper cylinder is located on the lower top surface of the second inverted L-shaped bracket.

[0095] Each of the gripper arms of the transfer gripper cylinder 22 is equipped with a gripper, and the mirror surface of the gripper is on the same vertical plane as the feeding axis of the automatic feeding device.

[0096] 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. A double-sided cutting device for an extension rod lathe, characterized in that, include: An automatic feeding device automatically feeds materials from the hopper into the processing device; The processing device is a lathe with a through-type three-jaw chuck. The spindle box where the chuck is located is set in the middle of the lathe. The movement trajectory of the spindle box is perpendicular to the feeding trajectory on the horizontal plane. With the vertical plane where the spindle box is located as the reference plane, the left side is the first machining position and the right side is the second machining position; The chuck loading device is configured in conjunction with the spindle box of the processing device and is located in the second processing position. The movable limit device is set in the first processing position in conjunction with the chuck feeding device; The feeding device and the movable limit device are arranged in parallel to each other and are used to feed materials from the spindle box; The cutting head is set in the first machining station and the second machining station.

2. The double-sided cutting equipment for the extension rod lathe according to claim 1, characterized in that, The automatic feeding device includes: a stepped feeder, used to lift materials from the hopper to the first conveyor belt, the stepped feeder consisting of several single steps and a return channel; Lifters are provided on the bottom surface of a single step and at the connection between the cargo bin and the step. The lifters include a first baffle and a second baffle. The first baffle is parallel to the bottom surface of the cargo bin, and the second baffle is connected to the first baffle and perpendicular to it at 90°. The bottom of the cargo hopper forms a 20° angle with the horizontal plane; The return channel is located on the side of the steps, with its top opening connected to the side of the first conveyor belt and its bottom opening located on the upper side of the hopper. The first conveyor belt uses two parallel cylindrical ring belts as the belt surface, and a first blocking device is set in the middle section of the first conveyor belt; the first blocking device is matched with the return channel of the stepped feeder. The first blocking device includes a rotating device and a blocking plate. The rotating device is mounted above the surface of the first conveyor belt via a bracket, and the blocking plate is mounted on the rotating shaft of the rotating device. The blocking plate includes two parts: the first part is the outermost part, and its surface is perpendicular to the conveying direction of the first conveyor belt; the second part is between the first part and the rotating shaft, and its surface forms a 45° angle with the conveying direction of the first conveyor belt. A triggering blocking block is provided at the end of the first conveyor belt; a horizontal transfer gripper device is provided on the upper side of the end of the first conveyor belt. The horizontal transfer gripper device is used to transfer material from the first conveyor belt to the second conveyor belt; The second conveyor belt is arranged parallel to the first conveyor belt. A limit plate is provided on the surface of the second conveyor belt, and a trigger sensor is provided at the starting point of the second conveyor belt. The trigger sensor is a pair of infrared transceivers or a pair of Hall sensors.

3. The double-sided cutting equipment for the extension rod lathe according to claim 2, characterized in that, The triggering blocking block includes a floating plate and a fixed plate, with a micro switch between them. An infrared transceiver is also provided on the fixed plate, and a through hole is provided at the position corresponding to the infrared transceiver on the floating plate.

4. The double-sided cutting equipment for the extension rod lathe according to claim 2, characterized in that, The horizontal transfer gripper device includes a horizontal sliding track, a horizontally positioned telescopic cylinder, a vertically positioned telescopic cylinder, a rotary cylinder, a gripper cylinder, and grippers; The horizontal sliding track includes a slider, and the horizontal telescopic cylinder body is fixedly connected to the horizontal sliding track and arranged coaxially. The telescopic end is driven by the slider. The cylinder body of the vertically set telescopic cylinder is set on the slider, with the telescopic end pointing vertically downward. A rotary cylinder is connected to the telescopic end, and the telescopic axis of the vertically set telescopic cylinder is coaxial with the rotation axis of the rotary cylinder. The first and second ends of the rotary cylinder rotate relative to each other. The first end is connected to the vertically set telescopic cylinder, and the second end is connected to the cylinder body of the gripper cylinder. Each gripper arm of the gripper cylinder is equipped with a gripper.

5. The double-sided cutting equipment for the extension rod lathe according to claim 2, characterized in that, The automatic feeding device also includes: a drop prevention adjustment device; The anti-fall adjustment device includes two horizontal telescopic cylinders. The first cylinder is located above the triggering block, and the second cylinder is located on the bracket where the first blocking device is located. The two horizontal telescopic cylinders are coaxial, and the vertical plane of their axis is the same as the vertical plane of the center of the first conveyor belt.

6. The double-sided cutting equipment for the extension rod lathe according to claim 1, characterized in that, The chuck feeding device includes: a conveyor belt material handling gripper device, a positioning slot, and a positioning slot feeding device; The conveyor belt material handling gripper device is used to transfer materials from the automatic feeding device to the upper side of the positioning groove, and the materials automatically fall into the positioning groove. The positioning groove uses a rectangular block with a rectangular countersunk hole facing downwards on the top surface. The bottom surface of the countersunk hole is a circular arc groove. Taking the central axis of the circular arc groove as a reference, concentric through holes of the same diameter are opened on the vertical surface of the short side of the positioning groove. The through holes are connected to the countersunk hole. The positioning slot feeding device uses a telescopic cylinder, and the movable axis of the positioning slot feeding device is coaxial with the through hole. The chuck feeding device has a movable limit device whose movable axis is coaxial with the through hole.

7. The double-sided cutting equipment for the extension rod lathe according to claim 6, characterized in that, The conveyor belt material handling gripper device includes: a horizontal transfer telescopic cylinder and a transfer gripper cylinder; The cylinder body of the horizontal transfer telescopic cylinder is fixed on the lathe body or the frame of the automatic feeding device by a bracket, and a transfer gripper cylinder is installed on the telescopic end. The cylinder body of the transfer gripper cylinder is connected to the horizontal transfer telescopic cylinder. Each gripper arm of the gripper cylinder is equipped with a gripper, and the mirror surface of the gripper is on the same vertical plane as the feeding axis of the automatic feeding device.

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