Headless bolt feeding device for thread rolling machine

Abstract

The invention relates to the technical field of headless bolt feeding, in particular to a headless bolt feeding device for a thread rolling machine, headless bolts are fed into the thread rolling machine for thread machining, the headless bolt feeding device comprises a main machine body, a plurality of temporary storage plates for storing the headless bolts are arranged at the top of the main machine body, and side plates are further arranged on the two sides of the top of the main machine body; the discharging end of the top of the main machine body is further provided with a hopper used for converting transversely-placed headless bolts into vertically-falling headless bolts, and the main machine body is further provided with a discharging assembly used for pushing the headless bolts on the temporary storage plate into the hopper one by one. According to the headless bolt feeding device, headless bolts are arranged on the temporary storage plate, the headless bolts roll into the through groove from the temporary storage plate, the headless bolts in the through groove fall into the hopper when the movable plate moves, the headless bolts become a vertical state in the falling process and enter the thread rolling machine, follow-up machining is facilitated, and meanwhile the feeding device is simple in structure and low in cost.

Description

Technical Field

[0001] The invention relates to the technical field of headless bolt feeding, in particular to a headless bolt feeding device for a thread rolling machine. Background Art

[0002] A headless bolt is a unique threaded connection that has no nut and one end is usually unthreaded, making it easy to insert into the hole of a device or part. During the manufacturing process, the threads of the headless bolt are processed by a thread rolling machine. To achieve this process, the bolt needs to be fed into the thread rolling machine, which requires a special feeding device.

[0003] For feeding headless screws, vibration plates or conveyors are usually used. However, due to the long length of headless bolts, vibration plates cannot be effectively used. If conveyors are used for feeding, there will be too much material conveyed each time, and the feeding is disorderly, which affects the thread rolling of the thread rolling machine. Therefore, it is necessary to cooperate with a robot to accurately place the headless bolts into the thread rolling machine, which undoubtedly increases production costs. Summary of the invention

[0004] The object of the present invention is to provide a headless bolt feeding device for a thread rolling machine. The headless bolts are arranged on a temporary storage plate. Since the headless bolts roll from the temporary storage plate into the through grooves, the headless bolts in the through grooves fall into the hopper when the movable plate moves. The headless bolts become vertical during the falling process and enter the thread rolling machine, which is convenient for subsequent processing. At the same time, the feeding device has a simple structure and low cost.

[0005] In order to solve the problems of the prior art, the present invention provides a headless bolt feeding device for a thread rolling machine, which feeds the headless bolts into the thread rolling machine for thread processing, comprising a main body, a plurality of temporary storage plates for storing the headless bolts are arranged on the top of the main body, side plates are also arranged on both sides of the top of the main body, and a hopper for converting horizontally placed headless bolts into vertically falling ones is also arranged at the discharge end of the top of the main body, and a feeding assembly for pushing the headless bolts on the temporary storage plate into the hopper one by one is also arranged on the main body.

[0006] Preferably, the material discharging assembly includes a movable plate that reciprocates along the discharging direction of the headless bolts, and a through slot for the headless bolts to pass through is opened on the movable plate. The material discharging assembly also includes a reciprocating motion mechanism for the reciprocating movement of the movable plate.

[0007] Preferably, the material discharge assembly includes a baffle fixed in the hopper, and the material discharge assembly also includes a fixed plate fixed on the main body, and the movable plate slides between the baffle and the fixed plate.

[0008] Preferably, the upper surface of the baffle and the end of the temporary storage plate are in the same plane, and a gap is formed between the baffle and the temporary storage plate for the headless bolt to pass through. When the movable plate moves in the direction of the headless bolt, the through groove coincides with the gap, and the headless bolt falls into the through groove. The through groove is located above the fixed plate, and the fixed plate blocks the headless bolt from falling. When the movable plate moves toward the hopper, the through groove is located in the hopper, the through groove is separated from the fixed plate, and the headless bolt falls into the hopper.

[0009] Preferably, the upper end of the hopper is larger than the lower end of the hopper, and the bottom of the hopper is also provided with a lower barrel for the headless bolt to pass through.

[0010] Preferably, the temporary storage plate is tiltedly arranged on the main body to facilitate the rolling off of the headless bolts.

[0011] Preferably, a plurality of slide grooves are vertically opened on the side panel, and a limit plate is detachably provided on the inner wall of the side panel. The cross-section of the limit plate is "L"-shaped, and a fixing bolt is also provided on the limit plate. The fixing bolt passes through the slide groove and is fixed with a nut. The limit plate and the temporary storage plate form a groove for only one layer of headless bolts to pass through.

[0012] Preferably, the main body is also provided with a pushing assembly for feeding the headless bolts onto the temporary storage plate, and the pushing assembly includes a support rail fixed on the main body, and the upper surface of the support rail is provided with a limiting groove along its length direction to prevent the headless bolts from rolling.

[0013] The pusher assembly includes a first pusher fixed on the support rail for pushing the headless bolt into the temporary storage plate position, and the pusher assembly also includes a second pusher fixed on the main body for pushing the headless bolt on the support rail into the temporary storage plate.

[0014] The pusher assembly also includes a sensing assembly arranged on the second pusher for detecting that the headless bolt reaches the position of the temporary storage plate.

[0015] The beneficial effects of the present invention compared with the prior art are: 1. This application realizes the effective temporary storage and transportation of headless bolts by setting an inclined temporary storage plate on the main body. When the headless bolt falls into the temporary storage plate, it will roll into the through groove. The movement of the moving plate intermittently feeds the headless bolts into the hopper. The upper end of the hopper is designed to be larger than the lower end, and a discharge barrel is configured at the bottom, so that the headless bolts turn from horizontal to vertical during the falling process, which is convenient for the subsequent thread rolling process. This structure is simple and low cost.

[0016] 2. A movable plate is provided between the baffle plate and the fixed plate of the present application, forming an intermittent feeding mechanism. There is a gap between the baffle plate and the temporary storage plate for the headless bolts to pass through, and the headless bolts first fall into this gap for temporary storage. When the through slot is aligned with the gap, the headless bolt falls into the through slot. The movement of the movable plate separates the through slot from the gap, preparing for the next headless bolt to fall in, thereby effectively avoiding the accumulation of headless bolts.

[0017] 3. The application sets a limit plate on the inner wall of the side plate, which together with the side plate forms a groove that only allows a single layer of headless bolts to pass through. This design prevents the headless bolts from being stacked in multiple layers on the temporary storage plate, ensuring the stable delivery of the headless bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a first stereoscopic structural schematic diagram of a headless bolt feeding device for a thread rolling machine of the present invention.

[0019] Figure 2 It is a second stereoscopic structural schematic diagram of a headless bolt feeding device for a thread rolling machine of the present invention.

[0020] Figure 3 The present invention is a schematic diagram of the three-dimensional structure of a feeding assembly of a headless bolt feeding device for a thread rolling machine.

[0021] Figure 4 The utility model is a top view structural schematic diagram of a headless bolt feeding device for a thread rolling machine of the present invention.

[0022] Figure 5 It is a schematic diagram of the first cross-sectional structure at AA of a headless bolt feeding device for a thread rolling machine of the present invention.

[0023] Figure 6 The invention discloses a side structural schematic diagram of a headless bolt feeding device for a thread rolling machine.

[0024] Figure 7 It is a schematic diagram of the second cross-sectional structure at AA of a headless bolt feeding device for a thread rolling machine of the present invention.

[0025] Figure 8 It is a first stereoscopic structural schematic diagram of a pusher assembly embodiment 1 of a headless bolt feeding device for a thread rolling machine of the present invention.

[0026] Fig. 9 It is a second stereoscopic structural schematic diagram of a first embodiment of a pusher assembly of a headless bolt feeding device for a thread rolling machine of the present invention.

[0027] Fig.10 It is a first stereoscopic structural schematic diagram of a second embodiment of a pusher assembly of a headless bolt feeding device for a thread rolling machine of the present invention.

[0028] The numbers in the figure are: 1, main body; 11, temporary storage plate; 12, side plate; 121, slide; 13, limit plate; 14, fixing bolt; 15, hopper; 151, unloading barrel; 16, unloading assembly; 161, baffle; 162, moving plate; 1621, through groove; 163, fixed plate; 164, reciprocating mechanism; 1641, rotating drive member; 1642, driving wheel; 1643, driven wheel; 1644, reducer; 16441, worm; 16442, worm wheel; 1645, cam; 1646, transmission rod; 17. Pushing assembly; 171. First pusher; 1711. First telescopic driving member; 1712. First pushing plate; 172. Second pusher; 1721. Second telescopic driving member; 1722. Second pushing plate; 1723. Third pushing plate; 173. Support rail; 1731. Limiting groove; 174. Sensing assembly; 1741. Extension plate; 1742. Touch plate; 17421. Touch rod; 1743. Pressure sensor; 1744. Articulated block; 175. Reset assembly; 175a. Counterweight block; 175b. Reset spring. DETAILED DESCRIPTION

[0029] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Reference Figure 1-Figure 10 As shown, the present invention provides a headless bolt feeding device for a thread rolling machine, which feeds the headless bolts into the thread rolling machine for thread processing, including a main body 1, a plurality of temporary storage plates 11 for storing the headless bolts are arranged on the top of the main body 1, side plates 12 are also arranged on both sides of the top of the main body 1, and a hopper 15 for converting the horizontally placed headless bolts into vertically falling ones is also arranged at the discharge end of the top of the main body 1, and a feeding assembly 16 for pushing the headless bolts on the temporary storage plate 11 into the hopper 15 one by one is also arranged on the main body 1.

[0031] The material discharging assembly 16 includes a moving plate 162 that reciprocates along the discharging direction of the headless bolts, and a through slot 1621 for the headless bolts to pass through is provided on the moving plate 162. The material discharging assembly 16 also includes a reciprocating mechanism 164 for the moving plate 162 to reciprocate. When the moving plate 162 moves along the discharging direction of the headless bolts under the drive of the reciprocating mechanism 164, the moving plate 162 will push the headless bolts in the through slot 1621 into the hopper 15. The width of the through slot 1621 should be greater than the diameter of the headless bolts to ensure that the bolts can pass smoothly without being stuck. The reciprocating mechanism 164 can be a combination of a cylinder, an electric cylinder, a motor and a lead screw, as long as it is a mechanism that can drive the moving plate 162 to reciprocate.

[0032] refer to Figure 2-Figure 6 As shown, the reciprocating mechanism 164 includes a reducer 1644 installed on the main body 1, a worm wheel 16442 is rotatably provided in the reducer 1644, and both ends of the shaft on the worm wheel 16442 pass through the reducer 1644 and are connected to a cam 1645, a worm 16441 meshing with the worm wheel 16442 is also rotatably provided in the reducer 1644, one end of the worm 16441 passes through the reducer 1644 and is connected to a driven wheel 1643, the reciprocating mechanism 164 also includes a transmission rod 1646, one end of the transmission rod 1646 is movably connected to the cam 1645, and the other end of the transmission rod 1646 is movably connected to the moving plate 162, the blanking assembly 16 also includes a rotating driving member 1641 fixed on the main body 1, the output end of the rotating driving member 1641 is connected to the driving wheel 1642, the driving wheel 1642 and the driven wheel 1643 are connected by a belt, and the rotating The driving member 1641 is the power source of the entire reciprocating motion mechanism 164. The rotating driving member 1641 provides the necessary torque and speed to drive the driving wheel 1642 to rotate. The rotating driving member 1641 can be an electric motor or a pneumatic motor as long as it can rotate. The driven wheel 1643 is connected to the driving wheel 1642 through a belt to receive power from the driving wheel 1642. The belt serves as a transmission medium to ensure that the power transmission between the driving wheel 1642 and the driven wheel 1643 is stable and reliable. The worm 16441 converts the rotational power received from the driven wheel 1643 into the rotational power of the worm wheel 16442, and achieves the effect of reducing speed and increasing torque. The cam 1645 converts the rotational motion of the worm wheel 16442 into the reciprocating motion of the transmission rod 1646, and the transmission rod 1646 transmits this reciprocating motion to the moving plate 162, thereby pushing the headless bolt to move along the discharge direction.

[0033] The material discharging assembly 16 includes a baffle 161 fixed in the hopper 15, and the material discharging assembly 16 also includes a fixed plate 163 fixed on the main body 1, and the movable plate 162 slides between the baffle 161 and the fixed plate 163. The upper surface of the baffle 161 is in the same plane as the end of the temporary storage plate 11, and the upper surface of the baffle 161 is in the same plane as the end of the temporary storage plate 11, so that the headless bolt can smoothly transition. A gap is formed between the baffle 161 and the temporary storage plate 11 for the headless bolt to pass through, ensuring that the headless bolt can smoothly fall into the through groove 1621 when the movable plate 162 moves to a suitable position. When the movable plate 162 moves toward the direction of the headless bolt, when the through slot 1621 coincides with the gap, the headless bolt falls into the through slot 1621. The through slot 1621 is located above the fixed plate 163, and the fixed plate 163 blocks the headless bolt from falling. When the movable plate 162 moves toward the hopper 15, the through slot 1621 is located in the hopper 15, the through slot 1621 separates from the fixed plate 163, and the headless bolt falls into the hopper 15.

[0034] The material discharging assembly 16 drives the moving plate 162 to reciprocate between the baffle plate 161 and the fixed plate 163 through the reciprocating mechanism 164. When the moving plate 162 moves in the direction of the headless bolts, the through slot 1621 coincides with the gap between the temporary storage plate 11 and the baffle plate 161, allowing the headless bolts to fall into the through slot 1621. Then, the moving plate 162 continues to move toward the hopper 15 under the drive of the reciprocating mechanism 164, the through slot 1621 separates from the fixed plate 163, and the headless bolts fall into the hopper 15. Through this process, the material discharging assembly 16 can push the headless bolts from the temporary storage plate 11 into the hopper 15 one by one for processing by the thread rolling machine.

[0035] There is a gap between the baffle plate 161 and the temporary storage plate 11 for the headless bolt to pass through, and the headless bolt first falls into the gap for temporary storage. When the through slot 1621 is aligned with the gap, the headless bolt falls into the through slot 1621. The movement of the moving plate 162 separates the through slot 1621 from the gap, preparing for the next headless bolt to fall in, thereby effectively avoiding the accumulation of headless bolts.

[0036] The upper end of the hopper 15 is larger than the lower end of the hopper 15. The upper end of the hopper 15 is designed to be larger than the lower end. This funnel shape helps the headless bolts to flow smoothly to the bottom under the action of gravity. The bottom of the hopper 15 is also provided with a lower barrel 151 for the headless bolts to pass through.

[0037] When the headless bolt falls into the temporary storage plate 11, it will roll into the through groove 1621. The movement of the movable plate 162 will intermittently feed the headless bolt into the hopper 15. The hopper 15 is designed so that the upper end is larger than the lower end, and a discharge barrel 151 is arranged at the bottom, so that the headless bolt turns from horizontal to vertical during the falling process, which is convenient for the subsequent thread rolling process. This structure is simple and low in cost. Driven by the reciprocating motion mechanism 164, the movable plate 162 returns to the initial position, ready for the next push of the headless bolt. This process will be repeated until all the headless bolts are fed into the hopper 15 and passed through the discharge barrel 151 for subsequent processing.

[0038] The temporary storage plate 11 is tilted on the main body 1 to facilitate the rolling down of the headless bolts. The tilted setting of the temporary storage plate 11 helps the headless bolts to roll down smoothly under the action of gravity. To ensure that the headless bolts can roll down to the receiving position of the unloading assembly 16 stably and continuously. The main function of the temporary storage plate 11 is to temporarily store a certain number of headless bolts and release them one by one to the unloading assembly 16 when needed. Through the tilted setting, the headless bolts can roll down automatically, reducing the need for manual intervention. A number of slide grooves 121 are vertically opened on the side plate 12, and the inner wall of the side plate 12 is detachably provided with a limit plate 13. The cross section of the limit plate 13 is "L" shaped. This design enables it to fit tightly on the inner wall of the side plate 12, so that the limit plate 13 can be stably installed on the side plate 12. The limit plate 13 is also provided with a fixing bolt 14, which passes through the slide groove 121 and is fixed with a nut. These slide grooves 121 allow the limit plate 13 to be adjusted in the vertical direction. The fixing bolt 14 passes through the limit plate 13 and the slide groove 121 and is fixed by a nut. This design allows the height of the limit plate 13 to be adjusted as needed to accommodate headless bolts of different sizes. The limit plate 13 and the temporary storage plate 11 form a groove that only allows one layer of headless bolts to pass through. This groove ensures that the headless bolts will not stack or get stuck on each other during the rolling process, thereby ensuring the stability and accuracy of the material feeding process.

[0039] When the headless bolts are placed on the temporary storage plate 11, they will roll down along the inclined temporary storage plate 11 under the action of gravity. The limiting plate 13 limits the rolling direction of the headless bolts through its "L"-shaped cross-section and close fit with the side plate 12, so that the headless bolts can only roll down along a predetermined path. By adjusting the height of the limiting plate 13, it can be ensured that the headless bolts form only one layer during the rolling process, avoiding stacking and jamming.

[0040] The main body 1 is also provided with a pusher assembly 17 for feeding the headless bolts onto the temporary storage plate 11. The pusher assembly 17 includes a support rail 173, which is fixed to the main body 1. The upper surface of the support rail 173 is provided with a limiting groove 1731 along its length direction to prevent the headless bolts from rolling.

[0041] The support rail 173 is firmly fixed to the main body 1 by bolts or other fasteners to ensure that it will not move or deform during use. These limit grooves 1731 have precise sizes and shapes, and are intended to prevent the headless bolts from rolling or deflecting during the pushing process. The design of the limit grooves 1731 ensures that the headless bolts can stay stably on the support rails 173 until they are pushed to the temporary storage plate 11. The support rails 173 provide a solid support surface for the headless bolts, allowing them to remain stable during the pushing process. Through the design of the limit grooves 1731, the support rails 173 can guide the headless bolts to move along a predetermined path, avoiding rolling or deflection. The limit grooves 1731 also play a positioning role, ensuring the accuracy of the headless bolts when they are pushed to the temporary storage plate 11.

[0042] refer to Figure 8-Figure 10 As shown, the pusher assembly 17 includes a first pusher 171 fixed on the support rail 173 for pushing the headless bolt into the position of the temporary storage plate 11, and the first pusher 171 includes a first telescopic drive 1711 fixed on the support rail 173, and the output end of the first telescopic drive 1711 is connected to a first push plate 1712. The first telescopic drive 1711 is the power source of the first pusher 171, and the first telescopic drive 1711 is usually an electric telescopic rod or a cylinder. The first telescopic drive 1711 is fixed on the support rail 173 and is responsible for providing the linear motion required to push the headless bolt. When the telescopic drive is extended, the push plate will move accordingly to push the headless bolt to a predetermined position. The pusher assembly 17 also includes a second pusher 172 fixed on the main body 1 for pushing the headless bolt on the support rail 173 into the temporary storage plate 11. The second pusher 172 includes a second telescopic driving member 1721 fixed on the main body 1. The output end of the second telescopic driving member 1721 is connected to a second push plate 1722. A third push plate 1723 is fixed on the second push plate 1722. The second telescopic driving member 1721 is fixed on the main body 1 and also provides power for linear motion. Similar to the first telescopic driving member 1711, the second telescopic driving member 1721 is an electric telescopic rod or cylinder.

[0043] When in use, the headless bolt is conveyed to the support rail 173 through the Z-shaped conveyor. By starting the first telescopic driving member 1711, the first telescopic driving member 1711 causes the first push plate 1712 to push the headless bolt to the temporary storage plate 11. Then, the second telescopic driving member 1721 is started to push the second push plate 1722 (and the third push plate 1723 thereon) forward. The second push plate 1722 and the third push plate 1723 work together to accurately push the headless bolt onto the temporary storage plate 11. The coordinated work of the first pusher 171 and the second pusher 172 ensures that the headless bolt can be accurately and efficiently pushed onto the temporary storage plate 11. This design not only improves production efficiency, but also reduces the difficulty of operation and the need for manual intervention.

[0044] The pusher assembly 17 also includes a sensing assembly 174 disposed on the second pusher 172 for detecting that the headless bolt has reached the position of the temporary storage plate 11. The sensing assembly 174 includes a hinge block 1744 fixed on the second push plate 1722, and a touch plate 1742 is rotatably disposed on the hinge block 1744. The design of the hinge block 1744 should ensure that the touch plate 1742 can rotate smoothly and flexibly while bearing a certain pressure and impact force. A touch rod 17421 is connected to the touch plate 1742. The sensing assembly 174 also includes a pressure sensor 1743 fixed on the hinge block 1744. An extension plate 1741 is connected to the touch plate 1742. A reset assembly 175 for resetting the touch plate 1742 is also disposed on the extension plate 1741.

[0045] The sensing component 174 is responsible for detecting whether the headless bolt has successfully reached the predetermined position of the temporary storage plate 11. The reset component 175 ensures that the touch plate 1742 can be accurately reset after each detection to prepare for the next detection. When the headless bolt is pushed to the temporary storage plate 11, the headless bolt will contact the touch plate 1742. At this time, the touch plate 1742 rotates around the hinge block 1744. At this time, the touch rod 17421 on the touch plate 1742 contacts the pressure sensor 1743. After the pressure sensor 1743 detects the pressure, it will control the movement of the second telescopic drive member 1721. After the headless bolt leaves the detection position, the reset component 175 restores the touch plate 1742 to the initial position to prepare for the next detection.

[0046] refer to Figure 8 and Fig. 9 As shown, in the first embodiment, the reset assembly 175 includes a counterweight block 175 a fixed on the extension plate 1741 .

[0047] The counterweight 175a provides power for the reset of the touch plate 1742 through its gravity. When the touch plate 1742 is pushed by the headless bolt and rotates, the counterweight 175a moves upward. When the headless bolt enters the temporary storage plate 11, the counterweight 175a falls back due to its own gravity, thereby resetting the touch plate 1742. At this time, the reset component 175 completes a complete reset cycle and is ready for the next test. The counterweight 175a should be firmly fixed on the extension plate 1741 to prevent it from falling off or loosening during the reset process. Bolts, welding or other reliable fixing methods can be used. The mass of the counterweight 175a should be reasonably selected based on factors such as the weight, moment of inertia and required reset speed of the touch plate 1742. An overweight counterweight 175a may cause the reset process to be too rapid or violent, while an underweight counterweight 175a may not provide sufficient reset power.

[0048] refer to Fig.10 As shown, in the second embodiment: the reset assembly 175 includes a reset spring 175b, one end of the reset spring 175b is connected to the hinge block 1744, and the other end of the reset spring 175b is connected to the extension plate 1741.

[0049] When the touch plate 1742 is pushed by the headless bolt and rotates, the reset spring 175b will be stretched; when the headless bolt leaves the detection position, the reset spring 145b will release its stored elastic potential energy and push the touch plate 1742 to return to the initial position. The elastic characteristics of the reset spring 145b can ensure the stability and accuracy of the touch plate 1742 during the reset process. Since the reset spring 145b has a certain stiffness and damping, the reset spring 145b can effectively slow down the shaking or jitter of the touch plate 1742 during the reset process, thereby ensuring that the touch plate 1742 can accurately stay at the predetermined position. The stiffness of the reset spring 145b determines its ability to store and release elastic potential energy. An overly stiff reset spring 145b may cause the reset process to be too rapid or violent, while an overly soft reset spring 145b may not provide sufficient reset force. Therefore, the appropriate stiffness of the reset spring 145b should be selected based on factors such as the weight of the touch plate 1742 and the required reset speed.

[0050] Working principle: When in use, the headless bolt is first conveyed to the top of the support rail 173 by the Z-type conveyor. Then, the first telescopic drive member 1711 is started, and the first telescopic drive member 1711 pushes the headless bolt to move. When the headless bolt moves to the position of the temporary storage plate 11, the headless bolt will come into contact with the touch plate 1742. The force exerted on the touch plate 1742 causes the touch rod 17421 to come into contact with the pressure sensor 1743. After detecting this pressure signal, the pressure sensor 1743 controls the second telescopic drive member 1721 to move. After the headless bolt leaves the detection position, the reset assembly 175 restores the touch plate 1742 to the initial position to prepare for the next detection. The action of the second telescopic drive member 1721 pushes the second push plate 1722 and the third push plate 1723, thereby pushing the headless bolt onto the temporary storage plate 11. When the headless bolt successfully falls into the temporary storage plate 11, the touch plate 1742 will be reset to the initial state. At this time, the headless bolt will roll into the through slot 1621 along the inclined surface of the temporary storage plate 11. Then, the rotary drive member 1641 is started to drive the driving wheel 1642 to rotate. The rotation of the driving wheel 1642 drives the synchronous rotation of the driven wheel 1643, and then the worm 16441 starts to rotate. The rotation of the worm 16441 drives the rotation of the worm wheel 16442, and the worm wheel 16442 drives the rotation of the cam 1645. The rotation of the cam 1645 is converted into the reciprocating motion of the moving plate 162 through the transmission rod 1646. When the through slot 1621 on the moving plate 162 moves into the hopper 15, the headless bolt will fall into the hopper 15. Since the design feature of the hopper 15 is that the upper end is larger than the lower end, and a discharge barrel 151 is configured at the bottom, the headless bolt will gradually change from horizontal to vertical during the falling process, and finally smoothly enter the thread rolling machine to prepare for the subsequent thread rolling process.

[0051] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A headless bolt feeding device for a thread rolling machine, which feeds the headless bolt into the thread rolling machine for thread processing, characterized in that: The main body (1) comprises a main body, wherein a plurality of temporary storage plates (11) for storing headless bolts are arranged on the top of the main body (1), and side plates (12) are arranged on both sides of the top of the main body (1). A hopper (15) for converting horizontally placed headless bolts into vertically falling headless bolts is arranged at the discharge end of the top of the main body (1), and a feeding assembly (16) for pushing the headless bolts on the temporary storage plates (11) into the hopper (15) one by one is also arranged on the main body (1).

2. A headless bolt feeding device for a thread rolling machine according to claim 1, characterized in that: The material discharge assembly (16) comprises a movable plate (162) that reciprocates along the discharge direction of the headless bolts, and a through slot (1621) is provided on the movable plate (162) for the headless bolts to pass through. The material discharge assembly (16) further comprises a reciprocating motion mechanism (164) for the reciprocating movement of the movable plate (162).

3. A headless bolt feeding device for a thread rolling machine according to claim 2, characterized in that: The material discharge assembly (16) comprises a baffle (161) fixed in the hopper (15), and the material discharge assembly (16) further comprises a fixed plate (163) fixed on the main body (1), and the movable plate (162) slides between the baffle (161) and the fixed plate (163).

4. A headless bolt feeding device for a thread rolling machine according to claim 3, characterized in that: The upper surface of the baffle plate (161) and the end of the temporary storage plate (11) are in the same plane, and a gap is formed between the baffle plate (161) and the temporary storage plate (11) for the headless bolt to pass through. When the movable plate (162) moves in the direction of the headless bolt, the through slot (1621) coincides with the gap, and the headless bolt falls into the through slot (1621). The through slot (1621) is located above the fixed plate (163), and the fixed plate (163) blocks the headless bolt from falling. When the movable plate (162) moves in the direction of the hopper (15), the through slot (1621) is located in the hopper (15), the through slot (1621) and the fixed plate (163) are separated, and the headless bolt falls into the hopper (15).

5. A headless bolt feeding device for a thread rolling machine according to claim 4, characterized in that: The upper end of the hopper (15) is larger than the lower end of the hopper (15), and a lower barrel (151) for a headless bolt to pass through is also provided at the bottom of the hopper (15).

6. A headless bolt feeding device for a thread rolling machine according to claim 4, characterized in that: The temporary storage plate (11) is arranged obliquely on the main body (1) to facilitate the rolling off of the headless bolts.

7. A headless bolt feeding device for a thread rolling machine according to claim 4, characterized in that: The side plate (12) is vertically provided with a plurality of slide grooves (121). A limit plate (13) is detachably provided on the inner wall of the side plate (12). The cross section of the limit plate (13) is in an "L" shape. A fixing bolt (14) is also provided on the limit plate (13). The fixing bolt (14) passes through the slide groove (121) and is fixed with a nut. The limit plate (13) and the temporary storage plate (11) form a groove for only one layer of headless bolts to pass through.

8. The headless bolt feeding device for a thread rolling machine according to claim 1 or claim 4, characterized in that: The main body (1) is also provided with a pusher assembly (17) for feeding the headless bolts onto the temporary storage plate (11); the pusher assembly (17) comprises a support rail (173); the support rail (173) is fixed to the main body (1); a limit groove (1731) is provided on the upper surface of the support rail (173) along its length direction for preventing the headless bolts from rolling.

9. The headless bolt feeding device for a thread rolling machine according to claim 8 or claim 4, characterized in that: The pusher assembly (17) comprises a first pusher (171) fixed on a support rail (173) for pushing a headless bolt into a position on a temporary storage plate (11); the pusher assembly (17) further comprises a second pusher (172) fixed on a main body (1) for pushing a headless bolt on the support rail (173) into a position on the temporary storage plate (11).

10. The headless bolt feeding device for a thread rolling machine according to claim 9 or claim 4, characterized in that: The pusher assembly (17) further comprises a sensing assembly (174) arranged on the second pusher (172) for detecting the position of the headless bolt reaching the temporary storage plate (11).

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