A processing device for round-head internal hexagonal square neck bolts and its usage method

Abstract

This invention relates to the field of bolt processing, specifically to a processing device for round-head hexagonal square neck bolts. The device includes a base, a support fixedly connected to the center of the top of the base, a blank box fixedly connected to the top of the support, a blank rod placed inside the blank box, and an upper die sleeve fixedly connected to the top of the base. This processing device and its method of use consist of a transmission mechanism, an unloading mechanism, and a material distribution mechanism. A hydraulic push rod moves the stamping punch, which, along with the lower die sleeve, reciprocates within the upper die sleeve during the stamping process. Under the action of the transmission mechanism, the blank rod inside the blank box automatically falls into the lower die sleeve. As the lower die sleeve moves out of the upper die sleeve, the stamped blank rod is automatically unloaded by the unloading mechanism. The entire bolt head stamping process only requires the activation of the hydraulic push rod, effectively improving operational convenience.

Description

Technical Field

[0001] This invention relates to the field of bolt processing, specifically to a processing device for round-head internal hexagonal square neck bolts and its usage method. Background Technology

[0002] The existing method for producing bolts is as follows: First, the metal blank is placed into the corresponding stamping die for stamping, and then the stamped metal blank is placed into the thread rolling machine to process the threaded part.

[0003] An existing patent (publication number: CN109590754A) discloses a processing device for round-head internal hexagonal square neck bolts, including a frame and a base. The frame is equipped with a heating mechanism, and below the heating mechanism are a grooved wheel mechanism and a cam mechanism. The frame also houses a mold mechanism and a thread rolling mechanism. During the development of this solution, the inventors discovered the following unresolved issues in the existing technology: 1. In operation, the bolt processing device requires controlling the rotation of the drive shaft via a sensor, then activating the second telescopic rod for stamping, and finally energizing the electromagnetic coil. These steps require the separate activation of multiple transmission components, resulting in poor operational convenience; 2. After the bolt head is stamped, it is difficult to inspect its quality, requiring separate manual inspection later, increasing production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a processing device for round-head hexagonal square neck bolts and its usage method, to solve the problems mentioned in the background art: 1. Existing bolt processing devices have poor operational convenience during use; 2. Existing bolt processing devices have difficulty in automatically detecting the processed bolt heads. To achieve the above objectives, this invention provides the following technical solution: A processing device for round-head hexagonal square neck bolts, including a base, a bracket fixedly connected to the middle position of the top of the base, a blank box fixedly connected to the top of the bracket, and a blank rod placed inside the blank box;

[0005] The top of the base is fixedly connected to an upper mold sleeve, and the interior of the upper mold sleeve is slidably connected to a lower mold sleeve. A transmission mechanism is movably connected between the side wall of the lower mold sleeve and the lower part of the blank box, and one side of the transmission mechanism is fixedly connected to the top of the base.

[0006] A material unloading mechanism is movably connected between the bottom of the lower mold sleeve and the top of the base. A conical unloading hole that cooperates with the material unloading mechanism is opened on the top of the base. A material distribution mechanism is movably connected between the lower part of the inner wall of the conical unloading hole and the inner wall of the base.

[0007] Preferably, the transmission mechanism includes a hydraulic push rod, the bottom of which is fixedly connected to the top of the base, one end of which is fixedly connected to a stamping punch, and both sides of the stamping punch are fixedly connected to spring telescopic rods, one end of which is fixedly connected to both sides of the lower die sleeve.

[0008] Both sides of the lower mold sleeve are fixedly connected with L-shaped pads. A rotating rod is rotatably connected to the upper part of the side wall of the L-shaped pad. A guide plate is fixedly connected to the middle part of the rotating rod. A restoring coil spring is fixedly connected between the surface of the rotating rod and the side wall of the L-shaped pad.

[0009] U-shaped blocks are fixedly connected to both sides of the lower part of the bracket. The two U-shaped blocks correspond one-to-one with the two L-shaped pads. A connecting rod is vertically slidably connected to the middle of the U-shaped block. A guide post that cooperates with the guide plate is rotatably connected to the bottom of the connecting rod. The bottom of the guide post overlaps the top of the adjacent L-shaped pad. A washer is fixedly sleeved in the middle of the connecting rod. A return spring is movably connected between the top of the washer and the inner wall of the U-shaped block.

[0010] A U-shaped transmission plate is fixedly connected to the upper part of the connecting rod. An L-shaped partition is movably connected inside the front end of the U-shaped transmission plate, and a transverse partition is movably connected inside the rear end of the U-shaped transmission plate. Inclined grooves are provided on both sides of the U-shaped transmission plate. The sides of the L-shaped partition and the transverse partition are slidably connected to the corresponding inclined grooves. The opposite ends of the L-shaped partition and the transverse partition are movably inserted into the lower part of the blank box.

[0011] Preferably, slots are provided on both sides of the lower part of the blank box, and the L-shaped partition and the horizontal partition are respectively movably inserted into the two slots.

[0012] Preferably, the inner wall of the upper mold sleeve is symmetrically provided with sliding grooves, and the top of the lower mold sleeve is symmetrically fixedly connected with sliders that cooperate with the sliding grooves.

[0013] Preferably, the unloading mechanism includes a rectangular groove, which is opened at the bottom of the lower mold sleeve. A pressing hole is vertically opened on the inner wall of the rectangular groove. A push rod is slidably connected inside the pressing hole. A limit ring is fixedly sleeved on the middle part of the push rod. A compression spring is movably connected between the top of the limit ring and the inner top surface of the pressing hole.

[0014] The top of the base is provided with a trapezoidal groove that matches the rectangular groove. A pad that matches the top rod is rotatably connected between the two sides of the inner wall of the trapezoidal groove. Adjustable coil springs are fixedly connected between the two sides of the pad and the inner wall of the rectangular groove.

[0015] Preferably, the material distribution mechanism includes two through slots, which are symmetrically opened inside the base. The two through slots are respectively arranged on both sides of the conical discharge hole. A discharge groove is opened between the inner wall of the through slot and the inner wall of the conical discharge hole. A spring piece that cooperates with the blank rod is symmetrically fixedly connected to the inner wall of the discharge groove at the rear end.

[0016] A support rod is fixedly connected to the lower part of the inner wall of the base, a detection block is rotatably connected to the middle part of the support rod, and a detection head that cooperates with the blank rod is fixedly connected to the top of the detection block.

[0017] An electric push rod is fixedly connected to the lower part of the base. A waist-shaped groove is opened on the lower part of one side of the detection block. One end of the electric push rod is slidably connected inside the waist-shaped groove. A transmission belt that cooperates with the detection block is movably installed on the lower part of the base.

[0018] Preferably, the top of the detection head is an arc surface, and the bottom of the detection head is a hexagon.

[0019] A method for using a machining device for round-head internal hexagonal square neck bolts includes the following steps:

[0020] S1. When using this bolt processing device, first place the blank rod inside the blank box. Under the action of gravity, the blank rod falls on the top surface of the L-shaped partition. Then, start the hydraulic push rod to move the stamping punch to the side wall of the lower die sleeve. At this time, the stamping punch, along with the spring telescopic rod, presses against the lower die sleeve and moves into the upper die sleeve, causing the L-shaped pads on both sides of the lower die sleeve to move along the guide plate to the guide post. At this time, the guide post moves upward along the inclined surface of the guide plate, causing the guide post to move upward along the connecting rod and the U-shaped transmission plate.

[0021] S2. During the upward movement of the U-shaped transmission plate, the inclined grooves on the side walls of the two U-shaped transmission plates slide in cooperation with the corresponding L-shaped partitions and horizontal partitions, causing the horizontal partitions to move into the blank box and the L-shaped partitions to move out of the blank box. At this time, the blank rod between the horizontal partition and the L-shaped partition falls into the interior of the lower die sleeve. Then, the blank rod enters the interior of the upper die sleeve along with the lower die sleeve. Then, the stamping punch continues to move to stamp one end of the blank rod between the lower die sleeve and the upper die sleeve. At this time, one end of the blank rod is stamped into a round-headed internal hexagonal square neck shape.

[0022] S3. After the blank rod is stamped, the hydraulic push rod moves the stamping punch back to its original position. At this time, the spring telescopic rod pulls the lower die sleeve out of the upper die sleeve. When the push rod inside the lower die sleeve moves to the position of the pad, the pad is pressed by the bottom of the push rod and flips to the inclined position of the trapezoidal groove. At this time, the pad is in an inclined state. As the push rod continues to move with the lower die sleeve, the push rod extends out from the pressing hole and presses the processed blank rod to flip, so that the blank rod is separated from the lower die sleeve and falls headfirst into the conical unloading hole.

[0023] S4. Finally, the blank rod slides down along the conical discharge hole and falls onto the top of the detection block, so that the internal hexagonal groove of the blank rod is inserted into the top position of the detection head. Then, the electric push rod is activated to extend and make the detection block rotate on the surface of the support rod. At this time, the detection head carries the blank rod to the discharge groove with the spring piece and flips over. When the internal hexagonal groove of the blank rod is stamped to be qualified, the internal hexagonal groove and the detection head are stably engaged. The flipped detection head carries the blank rod to press against the spring piece and deform it before falling from the through groove position into the surface of the transmission belt. The transmission belt transports the qualified blank rod to the thread rolling machine position for processing.

[0024] S5. When the internal hexagonal groove of the blank rod is not stamped properly, the internal hexagonal groove cannot be stably engaged with the detection head. During the process of the detection head rotating the blank rod, the blank rod cannot press against the spring to deform. At this time, the blank rod is restricted inside the conical discharge hole. As the detection block continues to rotate and tilts, the blank rod slides down the inclined surface of the detection block to a position away from the transmission belt for automatic material distribution.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] In this invention, the hydraulic push rod, transmission mechanism, and unloading mechanism work together to move the stamping punch. During the stamping process, the stamping punch moves back and forth inside the upper die sleeve with the lower die sleeve. Under the action of the transmission mechanism, the blank rod inside the blank box automatically falls into the lower die sleeve. As the lower die sleeve moves out of the upper die sleeve, the stamped blank rod is automatically unloaded under the action of the unloading mechanism. The entire stamping process of the screw head only requires the hydraulic push rod to be activated, which improves the ease of operation.

[0027] In this invention, through the coordinated use of components such as the base, the conical unloading hole, and the material distribution mechanism, after the processed screw enters the conical unloading hole, the screw is inserted into the top of the detection head. Then, the electric push rod is activated to rotate the detection block on the surface of the support rod, so that qualified screws are deformed by pressing against the spring and fall onto the surface of the transmission belt, and are transported to the next process by the transmission belt. Unqualified screws cannot be deformed by pressing against the spring and fall to the bottom of the base for recycling, avoiding the need for operators to inspect them separately later and reducing production costs.

[0028] In this invention, through the coordinated use of components such as guide plates, lower die sleeves, and guide pillars, when the lower die sleeve moves towards the hydraulic push rod along with the stamping punch, the side walls of the guide plates on both sides of the lower die sleeve contact the guide pillars, causing the guide plates to flip upwards. At this time, the blank box will not automatically unload. When the lower die sleeve moves to its limit position and then moves towards the upper die sleeve, the guide pillars will slide in cooperation with the inclined surfaces of the guide plates, causing the guide pillars to move upwards with the connecting rods. At this time, the blank box will automatically unload, thereby effectively ensuring the stability of the automatic feeding of the blank rod. Attached Figure Description

[0029] Figure 1 This is a left sectional view of the base and the conical discharge hole of the present invention;

[0030] Figure 2 For the present invention Figure 1 Enlarged view of the structure at point A in the middle;

[0031] Figure 3 For the present invention Figure 1 Enlarged view of the structure at point B;

[0032] Figure 4 This is a top view of the base position of the present invention;

[0033] Figure 5 This is a cross-sectional view of a portion of the lower mold sleeve and the rectangular groove of the present invention;

[0034] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point C;

[0035] Figure 7 This is a perspective view of the upper mold sleeve of the present invention;

[0036] Figure 8 This is a perspective view of the lower mold sleeve of the present invention;

[0037] Figure 9 This is a perspective view of the positions of the guide plate and guide post of the present invention;

[0038] Figure 10 This is a side sectional view showing the partial positions of the spring sheet and the discharge trough in this invention;

[0039] Figure 11 This is a perspective view of the blank rod of the present invention.

[0040] In the diagram: 1. Base; 2. Bracket; 3. Blank box; 4. Blank rod; 5. Upper die sleeve; 6. Lower die sleeve; 7. Transmission mechanism; 701. Hydraulic push rod; 702. Stamping punch; 703. Spring telescopic rod; 704. L-shaped pad; 705. Rotating rod; 706. Guide plate; 707. Returning coil spring; 708. U-shaped block; 709. Connecting rod; 710. Guide post; 711. Washer; 712. Return spring; 713. U-shaped transmission plate; 714. L-shaped partition; 715. Horizontal... 716. Baffle plate; 8. Inclined chute; 9. Unloading mechanism; 10. Rectangular chute; 11. Pressing hole; 12. Top rod; 13. Limiting ring; 14. Compression spring; 15. Trapezoidal chute; 16. Pad plate; 17. Adjusting coil spring; 18. Conical unloading hole; 19. Material distribution mechanism; 10. Through chute; 102. Discharge chute; 103. Spring; 104. Support rod; 105. Detection block; 106. Detection head; 107. Electric push rod; 108. Waist-shaped chute; 109. Transmission belt. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1 to 11 This invention provides a technical solution: a processing device for round-head internal hexagonal square neck bolts, including a base 1, a bracket 2 fixedly connected to the middle position of the top of the base 1, a blank box 3 fixedly connected to the top of the bracket 2, and a blank rod 4 placed inside the blank box 3. It should be noted that during the process of placing the blank rod 4 into the blank box 3, the head of the blank rod 4 is positioned towards the hydraulic push rod 701.

[0043] The top of the base 1 is fixedly connected to the upper mold sleeve 5, the interior of the upper mold sleeve 5 is slidably connected to the lower mold sleeve 6, the side wall of the lower mold sleeve 6 is movably connected to the lower part of the blank box 3, and one side of the transmission mechanism 7 is fixedly connected to the top of the base 1.

[0044] A material unloading mechanism 8 is movably connected between the bottom of the lower mold sleeve 6 and the top of the base 1. A conical unloading hole 9 that cooperates with the material unloading mechanism 8 is opened on the top of the base 1. A material distribution mechanism 10 is movably connected between the lower part of the inner wall of the conical unloading hole 9 and the inner wall of the base 1.

[0045] In this embodiment, as Figures 1 to 11 As shown, the transmission mechanism 7 includes a hydraulic push rod 701. The bottom of the hydraulic push rod 701 is fixedly connected to the top of the base 1. One end of the hydraulic push rod 701 is fixedly connected to a stamping punch 702. Both sides of the stamping punch 702 are fixedly connected to spring telescopic rods 703. One end of each of the two spring telescopic rods 703 is fixedly connected to both sides of the lower die sleeve 6.

[0046] Both sides of the lower mold sleeve 6 are fixedly connected to L-shaped pads 704. A rotating rod 705 is rotatably connected to the upper part of the side wall of the L-shaped pad 704. A guide plate 706 is fixedly connected to the middle of the rotating rod 705. A restoring coil spring 707 is fixedly connected between the surface of the rotating rod 705 and the side wall of the L-shaped pad 704. It should be noted that the bottom of the guide plate 706 is chamfered. When the lower mold sleeve 6 moves towards the hydraulic push rod 701 with the L-shaped pad 704 and the guide plate 706, after the chamfer at the bottom of the guide plate 706 contacts the guide post 710, the guide plate 706 flips upward along the axis of the rotating rod 705 to avoid interference with the guide post 710.

[0047] U-shaped blocks 708 are fixedly connected to both sides of the lower part of the bracket 2. Each U-shaped block 708 corresponds to one of the two L-shaped pads 704. A connecting rod 709 is vertically slidably connected to the middle of the U-shaped block 708. A guide post 710 that cooperates with the guide plate 706 is rotatably connected to the bottom of the connecting rod 709. The bottom of the guide post 710 overlaps the top of the adjacent L-shaped pad 704. A washer 711 is fixedly sleeved in the middle of the connecting rod 709. A return spring 712 is movably connected between the top of the washer 711 and the inner wall of the U-shaped block 708. It should be noted that when the guide plate 706 moves into the upper mold sleeve 5 along with the lower mold sleeve 6, the guide plate 706 will contact the guide post 710. At this time, the guide post 710 slides upward along the inclined surface of the guide plate 706.

[0048] A U-shaped transmission plate 713 is fixedly connected to the upper part of the connecting rod 709. An L-shaped partition 714 is movably connected inside the front U-shaped transmission plate 713. A transverse partition 715 is movably connected inside the rear U-shaped transmission plate 713. Inclined grooves 716 are provided on both sides of the U-shaped transmission plate 713. The sides of the L-shaped partition 714 and the transverse partition 715 are slidably connected inside the corresponding inclined grooves 716. The opposite ends of the L-shaped partition 714 and the transverse partition 715 are movably inserted into the lower part of the blank box 3.

[0049] In this embodiment, as Figures 1 to 11 As shown, slots are provided on both sides of the lower part of the blank box 3, and L-shaped partitions 714 and horizontal partitions 715 are movably inserted into the two slots respectively. It should be noted that: two U-shaped transmission plates 713 are symmetrically arranged on both sides of the lower part of the blank box 3, and L-shaped partitions 714 and horizontal partitions 715 are movably inserted into the lower part of the blank box 3 in a staggered manner. The opposite ends of L-shaped partitions 714 and horizontal partitions 715 are both tapered, and the blank rod 4 can slide between L-shaped partitions 714 and horizontal partitions 715.

[0050] In this embodiment, as Figures 1 to 11 As shown, the inner wall of the upper mold sleeve 5 is symmetrically provided with sliding grooves, and the top of the lower mold sleeve 6 is symmetrically fixedly connected with sliders that cooperate with the sliding grooves.

[0051] In this embodiment, as Figures 1 to 11 As shown, the unloading mechanism 8 includes a rectangular groove 801, which is located at the bottom of the lower mold sleeve 6. A pressing hole 802 is vertically formed on the inner wall of the rectangular groove 801. A push rod 803 is slidably connected inside the pressing hole 802. A limiting ring 804 is fixedly sleeved on the middle of the push rod 803. A compression spring 805 is movably connected between the top of the limiting ring 804 and the inner top surface of the pressing hole 802. It should be noted that the elasticity of the compression spring 805 is greater than that of the adjusting coil spring 808.

[0052] The top of the base 1 is provided with a trapezoidal groove 806 that matches the rectangular groove 801. A pad 807 that matches the top rod 803 is rotatably connected between the two sides of the inner wall of the trapezoidal groove 806. An adjusting coil spring 808 is fixedly connected between the two sides of the pad 807 and the inner wall of the rectangular groove 801. It should be noted that: under the action of the adjusting coil spring 808, the side wall of the pad 807 is in contact with the inclined surface of the trapezoidal groove 806. When the ejector rod 803 moves into the upper mold sleeve 5 along with the lower mold sleeve 6, the bottom of the ejector rod 803 will press against the side wall of the pad 807, causing the pad 807 to flip towards the plane of the trapezoidal groove 806. When the ejector rod 803 moves towards the hydraulic push rod 701 along with the lower mold sleeve 6, the pad 807 is in an inclined state. At this time, the bottom of the ejector rod 803 slides along the inclined surface of the pad 807 and gradually rises inside the pressing hole 802. When the lower mold sleeve 6 is completely removed from the upper mold sleeve 5, the rising ejector rod 803 pushes the blank rod 4 out from the lower mold sleeve 6.

[0053] In this embodiment, as Figures 1 to 11 As shown, the material distribution mechanism 10 includes a through groove 101. There are two through grooves 101, which are symmetrically opened inside the base 1. The two through grooves 101 are respectively set on both sides of the conical discharge hole 9. A discharge groove 102 is opened between the inner wall of the through groove 101 and the inner wall of the conical discharge hole 9. A spring piece 103 that cooperates with the blank rod 4 is symmetrically fixedly connected to the inner wall of the rear discharge groove 102.

[0054] A support rod 104 is fixedly connected to the lower part of the inner wall of the base 1. A detection block 105 is rotatably connected to the middle of the support rod 104. A detection head 106 that cooperates with the blank rod 4 is fixedly connected to the top of the detection block 105. It should be noted that when the hexagonal head of the blank rod 4 is inserted into the top position of the detection head 106, the detection block 105 can cause the blank rod 4 to deform against the spring 103 during the flipping process, so that the blank rod 4 enters the through groove 101 from the discharge groove 102 position. However, when the head of the blank rod 4 is not fully pressed into the position of the detection head 106, the head of the blank rod 4 will not be fully inserted into the position of the detection head 106. At this time, during the flipping process of the detection block 105 with the blank rod 4, the spring 103 will not deform because the head of the blank rod 4 and the detection head 106 cannot effectively cooperate and bear force. At this time, the blank rod 4 will not enter the through groove 101 on the side of the transmission belt 109, thereby realizing automatic sorting.

[0055] An electric push rod 107 is fixedly connected to the lower part of the base 1. A waist-shaped groove 108 is opened on the lower part of one side of the detection block 105. One end of the electric push rod 107 is slidably connected inside the waist-shaped groove 108. A transmission belt 109 that cooperates with the detection block 105 is movably installed on the lower part of the base 1. It should be noted that when the detection block 105, carrying a qualified blank rod 4, flips from the discharge groove 102 position into the through groove 101, the blank rod 4 will fall to the position of the transmission belt 109, and the transmission belt 109 will carry the blank rod 4 into the interior of the thread rolling machine. Usually, the thread part of the bolt is processed by the thread rolling machine. The thread rolling machine is existing technology and will not be described in detail.

[0056] In this embodiment, as Figures 1 to 11 As shown, the top of the detection head 106 is an arc surface, and the bottom of the detection head 106 is hexagonal. It should be noted that the arc surface at the top of the detection head 106 allows the internal hexagonal hole of the blank rod 4 to be stably inserted into the top surface of the detection head 106 after the blank rod 4 is stamped, and the arc surface facilitates quick positioning with the internal hexagonal hole of the blank rod 4.

[0057] A method for using a machining device for round-head internal hexagonal square neck bolts includes the following steps:

[0058] S1. When using this bolt processing device, first place the blank rod 4 into the blank box 3. Under the action of gravity, the blank rod 4 falls on the top surface of the L-shaped partition 714. Then, start the hydraulic push rod 701 to move the stamping punch 702 to the side wall position of the lower die sleeve 6. At this time, the stamping punch 702, along with the spring telescopic rod 703, presses the lower die sleeve 6 against the upper die sleeve 5 and moves it inside. This causes the L-shaped pads 704 on both sides of the lower die sleeve 6 to move along the guide plate 706 to the position of the guide post 710. At this time, the guide post 710 moves upward along the inclined surface of the guide plate 706, causing the guide post 710 to move upward along the connecting rod 709 and the U-shaped transmission plate 713.

[0059] S2. During the upward movement of the U-shaped transmission plate 713, the inclined grooves 716 on the side walls of the two U-shaped transmission plates 713 cooperate with the corresponding L-shaped partitions 714 and horizontal partitions 715 to slide, causing the horizontal partitions 715 to move into the blank box 3, while the L-shaped partitions 714 move outward from the blank box 3. At this time, the blank rod 4 between the horizontal partitions 715 and the L-shaped partitions 714 falls into the interior of the lower die sleeve 6. Then, the blank rod 4 enters the interior of the upper die sleeve 5 along with the lower die sleeve 6. Then, the stamping punch 702 continues to move to stamp one end of the blank rod 4 between the lower die sleeve 6 and the upper die sleeve 5. At this time, one end of the blank rod 4 is stamped into a round-headed internal hexagonal square neck shape.

[0060] S3. After the blank rod 4 is stamped, the hydraulic push rod 701 resets the stamping punch 702. At this time, the spring telescopic rod 703 pulls the lower die sleeve 6 out of the upper die sleeve 5. When the push rod 803 inside the lower die sleeve 6 moves to the position of the pad 807, the pad 807 is pressed by the bottom of the push rod 803 and flips to the inclined position of the trapezoidal groove 806. At this time, the pad 807 is in an inclined state. As the push rod 803 continues to move with the lower die sleeve 6, the push rod 803 extends out from the inside of the pressing hole 802 and presses the processed blank rod 4 to flip, so that the blank rod 4 is separated from the position of the lower die sleeve 6 and falls headfirst into the inside of the conical unloading hole 9.

[0061] S4. Finally, the blank rod 4 slides down along the conical discharge hole 9 and falls onto the top of the detection block 105, so that the internal hexagonal groove of the blank rod 4 is inserted into the top position of the detection head 106. Then, the electric push rod 107 is activated to extend and make the detection block 105 rotate on the surface of the support rod 104. At this time, the detection head 106 carries the blank rod 4 to the discharge groove 102 with the spring piece 103 and flips. When the internal hexagonal groove of the blank rod 4 is stamped as qualified, the internal hexagonal groove and the detection head 106 are stably engaged. The flipped detection head 106 carries the blank rod 4 to press against the spring piece 103 and deforms before falling from the through groove 101 into the surface of the transmission belt 109. The transmission belt 109 transports the qualified blank rod 4 to the wire rolling machine for processing.

[0062] S5. When the internal hexagonal groove of the blank rod 4 is not stamped properly, the internal hexagonal groove cannot be stably engaged with the detection head 106. During the process of the detection head 106 rotating the blank rod 4, the blank rod 4 cannot press against the spring 103 to deform. At this time, the blank rod 4 is restricted inside the conical discharge hole 9. As the detection block 105 continues to rotate and tilts, the blank rod 4 slides down the inclined surface of the detection block 105 to a position away from the transmission belt 109 for automatic material distribution.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A processing device for round-head internal hexagonal square neck bolts, comprising a base (1), characterized in that: A bracket (2) is fixedly connected to the middle position of the top of the base (1), and a blank box (3) is fixedly connected to the top of the bracket (2). A blank rod (4) is placed inside the blank box (3). The top of the base (1) is fixedly connected to an upper mold sleeve (5), and the interior of the upper mold sleeve (5) is slidably connected to a lower mold sleeve (6). The side wall of the lower mold sleeve (6) is movably connected to the lower part of the blank box (3), and one side of the transmission mechanism (7) is fixedly connected to the top of the base (1). The bottom of the lower mold sleeve (6) is movably connected to the top of the base (1) by a material unloading mechanism (8). The top of the base (1) is provided with a conical unloading hole (9) that cooperates with the material unloading mechanism (8). The lower part of the inner wall of the conical unloading hole (9) is movably connected to the inner wall of the base (1) by a material distribution mechanism (10). The transmission mechanism (7) includes a hydraulic push rod (701), the bottom of which is fixedly connected to the top of the base (1), and a stamping punch (702) is fixedly connected to one end of the hydraulic push rod (701). Spring telescopic rods (703) are fixedly connected to both sides of the stamping punch (702), and one end of each of the two spring telescopic rods (703) is fixedly connected to both sides of the lower die sleeve (6). Both sides of the lower mold sleeve (6) are fixedly connected with L-shaped pads (704). The upper part of the side wall of the L-shaped pad (704) is rotatably connected with a rotating rod (705). The middle part of the rotating rod (705) is fixedly connected with a guide plate (706). A restoring coil spring (707) is fixedly connected between the surface of the rotating rod (705) and the side wall of the L-shaped pad (704). U-shaped blocks (708) are fixedly connected to both sides of the lower part of the bracket (2). The two U-shaped blocks (708) correspond one-to-one with the two L-shaped pads (704). A connecting rod (709) is vertically slidably connected to the middle of the U-shaped block (708). A guide post (710) that cooperates with the guide plate (706) is rotatably connected to the bottom of the connecting rod (709). The bottom of the guide post (710) overlaps the top of the adjacent L-shaped pad (704). A washer (711) is fixedly sleeved in the middle of the connecting rod (709). A return spring (712) is movably connected between the top of the washer (711) and the inner wall of the U-shaped block (708). The upper part of the connecting rod (709) is fixedly connected to a U-shaped transmission plate (713). The front end of the U-shaped transmission plate (713) is movably connected to an L-shaped partition (714). The rear end of the U-shaped transmission plate (713) is movably connected to a transverse partition (715). Inclined grooves (716) are provided on both sides of the U-shaped transmission plate (713). The sides of the L-shaped partition (714) and the transverse partition (715) are slidably connected to the corresponding inclined grooves (716). The opposite ends of the L-shaped partition (714) and the transverse partition (715) are movably inserted into the lower part of the blank box (3). The unloading mechanism (8) includes a rectangular groove (801), which is located at the bottom of the lower mold sleeve (6). The inner wall of the rectangular groove (801) is vertically provided with a pressing hole (802). A push rod (803) is slidably connected inside the pressing hole (802). A limit ring (804) is fixedly sleeved in the middle of the push rod (803). A compression spring (805) is movably connected between the top of the limit ring (804) and the inner top surface of the pressing hole (802). The top of the base (1) is provided with a trapezoidal groove (806) that matches the rectangular groove (801). A pad (807) that matches the top rod (803) is rotatably connected between the two sides of the inner wall of the trapezoidal groove (806). An adjusting coil spring (808) is fixedly connected between the two sides of the pad (807) and the inner wall of the rectangular groove (801). The material distribution mechanism (10) includes a through groove (101), and there are two through grooves (101). The two through grooves (101) are symmetrically opened inside the base (1). The two through grooves (101) are respectively set on both sides of the conical discharge hole (9). A discharge groove (102) is opened between the inner wall of the through groove (101) and the inner wall of the conical discharge hole (9). A spring piece (103) that cooperates with the blank rod (4) is symmetrically fixedly connected to the inner wall of the discharge groove (102) at the rear end. A support rod (104) is fixedly connected to the lower part of the inner wall of the base (1), a detection block (105) is rotatably connected to the middle part of the support rod (104), and a detection head (106) that cooperates with the blank rod (4) is fixedly connected to the top of the detection block (105). An electric push rod (107) is fixedly connected to the lower part of the base (1). A waist-shaped groove (108) is provided on the lower part of one side of the detection block (105). One end of the electric push rod (107) is slidably connected inside the waist-shaped groove (108). A transmission belt (109) that cooperates with the detection block (105) is movably installed on the lower part of the base (1).

2. The processing device for round-head internal hexagonal square neck bolts according to claim 1, characterized in that: The blank box (3) has slots on both sides at the bottom, and the L-shaped partition (714) and the horizontal partition (715) are respectively movably inserted into the two slots.

3. The processing device for round-head internal hexagonal square neck bolts according to claim 2, characterized in that: The inner wall of the upper mold sleeve (5) is symmetrically provided with sliding grooves, and the top of the lower mold sleeve (6) is symmetrically fixedly connected with sliders that cooperate with the sliding grooves.

4. The processing device for round-head internal hexagonal square neck bolts according to claim 3, characterized in that: The top of the detection head (106) is an arc surface, and the bottom of the detection head (106) is a hexagon.

5. The method of using the round head internal hexagonal square neck bolt processing device according to claim 1 includes the following steps: S1. When using this bolt processing device, first put the blank rod (4) into the blank box (3). Under the action of gravity, the blank rod (4) falls on the top surface of the L-shaped partition (714). Then start the hydraulic push rod (701) to move the stamping punch (702) to the side wall position of the lower die sleeve (6). At this time, the stamping punch (702) pushes the lower die sleeve (6) with the spring telescopic rod (703) to move into the upper die sleeve (5), so that the L-shaped pads (704) on both sides of the lower die sleeve (6) move with the guide plate (706) to the position of the guide post (710). At this time, the guide post (710) moves upward along the inclined surface of the guide plate (706), so that the guide post (710) moves upward with the connecting rod (709) and the U-shaped transmission plate (713). S2. During the upward movement of the U-shaped transmission plate (713), the inclined grooves (716) on the side walls of the two U-shaped transmission plates (713) slide in cooperation with the corresponding L-shaped partitions (714) and the horizontal partitions (715), causing the horizontal partitions (715) to move into the blank box (3) and the L-shaped partitions (714) to move out of the blank box (3). At this time, the blank rod (4) between the horizontal partitions (715) and the L-shaped partitions (714) falls into the interior of the lower die sleeve (6). Then, the blank rod (4) enters the interior of the upper die sleeve (5) along with the lower die sleeve (6). Then, the stamping punch (702) continues to move to stamp one end of the blank rod (4) between the lower die sleeve (6) and the upper die sleeve (5). At this time, one end of the blank rod (4) is stamped into a round-headed internal hexagonal square neck shape. S3. After the blank rod (4) is stamped, the hydraulic push rod (701) takes the stamping punch (702) back to its original position. At this time, the spring telescopic rod (703) pulls the lower die sleeve (6) out of the upper die sleeve (5). When the push rod (803) inside the lower die sleeve (6) moves to the position of the pad (807), the pad (807) is pressed by the bottom of the push rod (803) and flips to the inclined position of the trapezoidal groove (806). At this time, the pad (807) is in an inclined state. As the push rod (803) continues to move with the lower die sleeve (6), the push rod (803) extends out from the inside of the pressing hole (802) and presses the processed blank rod (4) to flip, so that the blank rod (4) is separated from the position of the lower die sleeve (6) and falls headfirst into the inside of the conical unloading hole (9). S4. Finally, the blank rod (4) slides down along the conical discharge hole (9) and falls on the top of the detection block (105), so that the inner hexagonal groove of the blank rod (4) is inserted into the top position of the detection head (106). Then, the electric push rod (107) is started to extend and make the detection block (105) rotate on the surface of the support rod (104). At this time, the detection head (106) carries the blank rod (4) to the discharge groove (102) with the spring piece (103) and flips. When the inner hexagonal groove of the blank rod (4) is stamped as qualified, the inner hexagonal groove and the detection head (106) are stably engaged, so that the flipped detection head (106) carries the blank rod (4) to press against the spring piece (103) and deforms before falling from the through groove (101) into the surface of the transmission belt (109). The transmission belt (109) transports the qualified blank rod (4) to the thread rolling machine for processing. S5. When the internal hexagonal groove of the blank rod (4) is not stamped properly, the internal hexagonal groove cannot be stably engaged with the detection head (106). During the process of the detection head (106) carrying the blank rod (4) to flip, the blank rod (4) cannot press against the spring piece (103) to generate deformation. At this time, the blank rod (4) is restricted inside the conical discharge hole (9). As the detection block (105) continues to flip and is tilted, the blank rod (4) slides down along the inclined surface of the detection block (105) to a position away from the transmission belt (109) for automatic material distribution.

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