A long rod bolt arranging device and method

Abstract

The present invention relates to a long bolt arranging device and method, comprising: an arc-shaped chute docked with a blanking chute of an upstream machine. Below the entrance of the arc-shaped chute, a stop bar is provided at a position shorter than the length of the screw rod of the long rod workpiece to be processed. The arc length of the arc-shaped chute is greater than one radian. The present invention uses an arc-shaped chute and a stop bar to change the long bolt falling from the thread rolling station from a vertical state to a horizontal state and determine the position of the screw head, providing good conditions for neatly arranging the long bolts. Using the present invention in direct cooperation with the packaging box can quickly and accurately pack the workpieces, reduce costs and improve work efficiency.

Description

Technical Field

[0001] The present invention relates to a long rod bolt arranging device and method, which is a mechanical device and a process method, and is a device and method for neatly arranging long rod bolts after thread rolling processing or cleaning and oil spraying for preparation of packaging. Background Art

[0002] For a long time, the packaging of bolts has had the problem of low automation. Short bolts with a relatively small length-diameter ratio can be directly packaged in a scattered form or neatly packaged through arrangement by a vibrating screen. For long rod bolts with a relatively large length-diameter ratio, it is more troublesome. For a long time, there has been no automated equipment that can solve the problem of neatly arranging long rod bolts. On the production line, workers are required to manually sort out the chaotic workpieces in the storage bin and arrange them with the screw heads on both sides into the packaging box. In packaging, the number of screw heads placed on both sides needs to be approximately equal so that the packaging can be relatively uniform and save the space of the packaging box. When traditional long rod bolts fall from the thread rolling machine, they are all scattered, and the screw heads are in all directions. Workers need to quickly sort them out. For a thread rolling machine with a relatively high speed, two or three workers are required to keep up with the speed of loading the box. How to make the long rod bolts arrange the bolt heads evenly and neatly when falling from the thread rolling machine or after cleaning and oil spraying to meet the requirements of loading the box is a problem that needs to be solved. Summary of the Invention

[0003] In order to overcome the problems of the prior art, the present invention provides a long rod bolt arranging device and method. The device and method use an arc-shaped chute to change the long rod member falling vertically by gravity into a horizontal state and determine the direction of the screw head, thereby forming the packaging state of the long rod bolt and improving the packaging efficiency of the long rod bolt.

[0004] The object of the present invention is achieved as follows: A long rod bolt arranging device includes: an arc-shaped chute docked with the downstream chute of the upstream machine. Below the entrance of the arc-shaped chute, a stop bar is provided at a position shorter than the length of the screw rod of the long rod workpiece to be processed, and the arc length of the arc-shaped chute is greater than one radian.

[0005] Furthermore, a retaining bar for preventing the screw head from slipping out of the arc-shaped chute is provided above the arc-shaped chute.

[0006] Furthermore, guard plates are arranged on both sides of the arc-shaped chute.

[0007] Furthermore, the arc-shaped chute is composed of two arc-shaped chutes with opposite entrances, one positive and one negative. Each of the two arc-shaped chutes is provided with its own stop bar and retaining bar; a deflecting rod is provided at the two opposite entrances, and the deflecting rod is connected to a deflecting driving device; a storage tank with a width matching the length of the workpiece is provided below the two opposite arc-shaped chutes.

[0008] Furthermore, the direction-changing driving facility includes: a sensor installed at the outlet of the blanking chute of the thread rolling machine, and the sensor is connected to a driver that drives the direction-changing rod to move.

[0009] Furthermore, the driver is one of an electric cylinder, an oil cylinder, and a pneumatic cylinder.

[0010] Furthermore, the driver is an electromagnet.

[0011] Furthermore, the direction-changing driving facility includes: a lifting rod whose one end can drive the direction-changing rod to lift and the other end can be struck by a workpiece falling in one direction to generate a lifting action; a pressing rod whose one end can drive the direction-changing rod to press down and the other end can be struck by a workpiece falling in the other direction to generate a pressing-down action.

[0012] A method for arranging long rod bolts using the above device, the steps of the method are as follows:

[0013] Step 1, workpiece entry: The long rod workpiece falls from the blanking chute of the thread rolling machine in a vertical state with the screw head on top.

[0014] Step 2, workpiece direction change: When the workpiece enters the direction-changing station, if the previous workpiece moves forward, the direction-changing rod lifts to block the falling workpiece, causing the current workpiece to move in the opposite direction; if the previous workpiece moves backward, the direction-changing rod presses down, causing the current workpiece to continue moving forward.

[0015] Step 3, workpiece state change: Whether moving in the positive direction or the reverse direction, the screw head of the workpiece slides down along the arc-shaped chute. At this time, the stop rod blocks the lower part of the workpiece, causing the whole workpiece to rotate around the stop rod, and the workpiece changes from a vertical state to a horizontal state.

[0016] Step 4, blanking: The workpiece in the horizontal state falls into the horizontal storage chute with the length of the workpiece as the width, continuing to maintain the horizontal state of the long rod-shaped workpiece and keeping it neat; since in the workpiece direction change in Step 2, the screw head of the previous workpiece is always on one side and the screw head of the next workpiece is on the other side, the screw heads of the workpieces in the horizontal storage chute are neatly and evenly distributed at both ends, realizing the uniform distribution of long rod bolts.

[0017] The advantages and beneficial effects of the present invention are: The present invention uses an arc-shaped chute and a stop rod to change the long rod-shaped bolt falling from the thread rolling station from a vertical state to a horizontal state and determine the position of the screw head, providing good conditions for neatly arranging long rod bolts. Using the present invention in direct cooperation with the packaging box can quickly and accurately pack workpieces, reducing costs and improving work efficiency. Description of the Drawings

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic structural diagram of the device according to the first embodiment of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the device according to the third embodiment of the present invention;

[0021] Figure 3 It is a schematic structural diagram of the device according to the fourth embodiment of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the direction-changing drive arrangement according to the eighth embodiment of the present invention. Detailed implementation manners

[0023] Embodiment 1:

[0024] This embodiment is a long rod bolt arranging device, as Figure 1 shown. This embodiment includes: an arc-shaped chute 2 docked with the blanking chute 1 of the upstream machine. Below the entrance 201 of the arc-shaped chute, a stop bar 3 is provided at a position shorter than the length L of the screw of the long rod workpiece to be processed. The arc length of the arc-shaped chute is greater than one radian.

[0025] The workpiece 01 in this embodiment is a long rod piece. The long rod piece refers to a bolt workpiece with a length-to-diameter ratio greater than 3. For example, Figure 1 the workpiece shown has a length-to-diameter ratio greater than 8. The upstream machine refers to processing or conveying mechanical equipment or devices for bolts such as a thread rolling machine, a cleaning machine, an oil spraying machine, a conveyor, or a workpiece transport chain. The blanking chute of the upstream machine is the blanking chute of the above-mentioned mechanical equipment or device. Under normal circumstances, both this blanking chute and the arc-shaped chute described in this embodiment are composed of two parallel long rod pieces that can support the shoulders of the bolt workpiece. The bolt workpiece is actually hung on the two long rod pieces serving as the chute by the bolt shoulders, and the screw part is placed between the two long rod pieces. The two long rod pieces restrict the screw head from falling and use gravity to restrict the shoulders from sliding along the two long rod pieces. The shoulder of the bolt refers to the junction of the screw head and the screw of the workpiece.

[0026] The workpiece is in a vertical state during the thread rolling process or the process of cleaning the oil spray or the feeding machine unloading, that is, the screw head of the workpiece is on the top and the screw rod is on the bottom. When the workpiece is naturally placed on a horizontal plane, it is usually in a horizontal state, so the packaging of this long-rod bolt usually adopts a horizontal state. However, if the long-rod workpiece is allowed to fall from the transport chute of the thread rolling machine into the storage box at will after the thread rolling, the workpiece in the storage box will be in a chaotic state, and the larger the workpiece, the more difficult it is to clean. For this reason, this embodiment provides an arc-shaped chute so that the bolt shoulder can slide along the arc, so that the bolt changes from a vertical state to a horizontal state. Only the arc chute is not enough. This embodiment also provides a lever at the position where the "foot (the lower part of the workpiece in the vertical state)" of the workpiece passes, so as to "trip" the workpiece, so that the workpiece changes state more steadily without jamming.

[0027] A stop bar may be provided above the arc-shaped slide groove, where the screw head passes, to prevent the bolt from being separated from the arc-shaped slide groove as a whole.

[0028] Guard plates may be added on both sides of the arc-shaped slide groove described in this embodiment to prevent the long-rod bolt from shaking too much and causing jamming or even getting stuck when the long-rod bolt changes state.

[0029] In order to ensure that the long-rod bolt can stably and reliably change its position, the arc length of the arc-shaped groove should be greater than one arc, and the arc length can also reach one-quarter of the arc, but should be less than one-half of the arc.

[0030] In this embodiment, two semicircular arc-shaped chutes can also be provided, and the two half arcs are one positive and one negative, forming a circular arc-shaped chute of a whole circle, so that the workpiece can move forward or backward. An opening and closing mechanism (direction change rod) is added between the two semicircular arc chutes to change the direction of movement of the workpiece when it flows out of the thread rolling machine unloading chute. In this way, the screw head can be controlled in the falling process. If one is positive and the other is negative, it can provide convenience for the workpiece to be placed in the packaging box.

[0031] Embodiment 2:

[0032] This embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment regarding the arc-shaped chute. A retaining bar 4 is provided above the arc-shaped chute in this embodiment to prevent the screw head from falling out of the arc-shaped chute. Figure 1 shown.

[0033] There can be one or two guard bars. If one guard bar is set, it can be placed in the middle of the arc-shaped slide. If two guard bars are set, they can be set at a position with the same width as the two slide rails of the slide. In this way, even the bolts in the unloading chute of the thread rolling machine can enter the arc-shaped slide without being disturbed and pass smoothly.

[0034] Embodiment three:

[0035] This embodiment is an improvement of the above embodiment and a refinement of the above embodiment regarding the arc-shaped chute. In this embodiment, guard plates 5 are provided on both sides of the arc-shaped chute, as Figure 2 shown.

[0036] For lightweight, the guard plate can be a porous guard plate or a mesh guard plate.

[0037] Embodiment Four:

[0038] This embodiment is an improvement of the above embodiment and a refinement of the above embodiment regarding the arc-shaped chute. The arc-shaped chute described in this embodiment consists of two arc-shaped chutes 202 and 203 with opposite entrances, one positive and one negative. Each of the two arc-shaped chutes is provided with its own retaining rod 301, 302 and retaining bar 401, 402; at the two opposite entrances, one positive and one negative, a deflecting rod 6 is provided, and the deflecting rod is connected to a deflecting driving facility; below the two opposite arc-shaped chutes, a storage tank 7 with a width matching the length of the workpiece is provided, as Figure 3 shown.

[0039] In the above embodiment, the long rod bolts are only arranged according to the direction of the screw head, and the state of uniform distribution according to the screw head has not been achieved. Therefore, it is necessary to arrange the bolts according to the position of the screw head. For this reason, this embodiment is provided with two sets of left and right arc-shaped chutes, and a deflecting rod is added in the middle as a selection mechanism. Through the selection mechanism, the screw heads of the falling long rod bolts are arranged in a staggered manner, one positive and one negative, to meet the requirements of boxing. Therefore, the entire chute forms an approximate complete circle, and the long rod bolts fall from both sides in a staggered manner, and then are concentrated at the discharge port. A packaging box is provided at the lower end of the discharge port or a transport chain that can maintain the long rod bolts in a horizontal state is connected.

[0040] The middle deflecting rod is used to select the movement direction of the long rod bolt. When the deflecting rod does not appear at the front end of the falling long rod bolt (such as the position of the deflecting rod shown by the solid line in Figure 3 ), the deflecting rod will not block the forward movement of the long rod bolt, and the long rod bolt continues to move forward (the movement direction of the workpiece that is the same as the downstream mechanical blanking chute is the forward movement, such as the direction shown by arrow A in Figure 3 ), and enters the positive semi-circular arc chute; when the deflecting rod appears at the front end of the falling long rod bolt, the deflecting rod blocks the forward movement of the workpiece, and at this time the long rod bolt moves backward (the movement direction of the workpiece that is opposite to the downstream mechanical blanking chute is the backward movement, such as the direction shown by arrow B in Figure 3 ), and enters the reverse semi-circular arc chute, thus forming a selection of the workpiece direction.

[0041] There are various choices for the said deflecting rod. It can be lifted and lowered along arrow C as Figure 3 shown, or it can be in Figure 3The position of the direction-changing rod indicated by the dashed line in the middle presents a pushing and pulling motion perpendicular to the paper surface to change or not change the motion direction of the long rod bolt.

[0042] The described direction-changing driving facility is used to drive the direction-changing rod to lift and lower, or to insert and pull out for a selected action ( Figure 3 The direction-changing driving facility for driving the direction-changing rod is not expressed in the middle). The direction-changing driving facility can adopt power devices such as electric cylinders, air cylinders, oil cylinders, etc., or adopt relatively simple electromagnets, and can also be realized by using a pure mechanical structure.

[0043] When using an electric cylinder, air cylinder, oil cylinder or electromagnet, sensors need to be set at the position where the long rod workpiece enters to determine the entry of the workpiece. Each time a workpiece enters, the direction-changing rod acts once to block or not block the workpiece.

[0044] Example Five:

[0045] This example is an improvement of the above example and is a refinement of the above example regarding the direction-changing driving facility. The direction-changing driving facility described in this example includes: a sensor installed at the outlet of the blanking chute of the thread rolling machine, and the sensor is connected to a driver that drives the movement of the direction-changing rod.

[0046] The sensor used in this example can be a Hall element, which only detects similar to the function of a counter and has an action once as long as there is a workpiece. A simple and reliable electrical output element such as a microswitch can also be used.

[0047] Example Six:

[0048] This example is an improvement of the above example and is a refinement of the above example regarding the driver. The driver described in this example is one of an electric cylinder, an oil cylinder, and an air cylinder.

[0049] An electric cylinder or an electric push rod is a driver with convenient energy acquisition, clean and tidy, and can be used as the first choice.

[0050] Example Seven:

[0051] This example is an improvement of the above example and is a refinement of the above example regarding the driver. The driver described in this example is an electromagnet.

[0052] As a device with a simple and reliable structure, the electromagnet is widely used, but there are also problems of relatively large impact and noise.

[0053] Example Eight:

[0054] This embodiment is an improvement of the above embodiment and a refinement of the above embodiment regarding the direction-changing driving facility. The direction-changing driving facility described in this embodiment includes: a lifting rod 601 whose one end can drive the direction-changing rod to lift and the other end can be struck by a workpiece falling in one direction to generate a lifting action; a pressing rod 602 whose one end can drive the direction-changing rod to press down and the other end can be struck by a workpiece falling in the other direction to generate a pressing-down action, as Figure 4 shown.

[0055] The direction-changing driving facility described in this embodiment is a pure mechanical structure, and realizes the lifting, lowering or inserting / extracting movement of the direction-changing rod through a pure mechanical method. As Figure 4 shown, this embodiment provides a swingable lifting rod and a swingable pressing rod. As Figure 4 shown, when a workpiece falls from the left side, it pushes the lifting rod to move upward ( Figure 4 the direction of arrow a in Figure 4 ), causing the lifting rod to swing along arrow b and causing the lifting rod to push the direction-changing rod to move along arrow c, forming a lifting action. As Figure 4 shown, when a workpiece falls from the right side, it pushes one end of the pressing rod to move upward ( Figure 4 the direction of arrow d in

[0056] ), causing the pressing rod to swing along arrow e and causing the other end of the pressing rod to move downward (

[0057] the direction of arrow f in

[0058] ), and the pressing rod pushes the direction-changing rod to move downward along arrow c, forming a pressing-down action.

[0059] The specific steps of the method are as follows:

[0060] Step 1, workpiece entry: The long rod workpiece falls from the downstream chute of the upstream machine in a vertical state with the screw head facing up.

[0061] When the workpiece falls from the chute of the upstream machine, it should maintain a vertical state with the screw head facing up and the screw rod facing down, and keep a certain distance between each workpiece.

[0062] Step 2, workpiece direction change: When the workpiece enters the direction-changing station, if the previous workpiece moves forward, the deflector rod lifts up to block the falling workpiece, causing the current workpiece to move in the opposite direction; if the previous workpiece moves backward, the deflector rod presses down, causing the current workpiece to continue moving forward.

[0063] In this step, the movement direction of the workpiece is selectively changed, and the direction is changed once for each falling workpiece, thus forming a state where the workpieces are placed upright and upside down alternately. When the workpiece selects its movement direction, the workpiece still maintains a vertical state with the screw head on top and the screw rod at the bottom.

[0064] Step 3, workpiece state change: Whether moving in the forward or reverse direction, the screw head of the workpiece slides downward along the arc-shaped chute. At this time, the blocking rod blocks the lower part of the workpiece, causing the entire workpiece to rotate around the blocking rod, and the workpiece changes from a vertical state to a horizontal state.

[0065] This step is the key step to change the workpiece from a vertical state to a horizontal lying state. Due to the action of the arc-shaped chute, the screw head quickly falls along the arc-shaped groove, but the bottom of the screw rod is blocked by the blocking rod and cannot move forward with the screw head according to inertia, causing the entire workpiece to tip over and form a state of changing from vertical to lying flat. Due to the direction selection in the previous step, the lying flat of the workpiece forms a uniform change with the screw head on the left and right alternately.

[0066] Step 4, blanking: The workpiece in the horizontal state falls into the horizontal storage tank with the length of the workpiece as the width, continuing to maintain the horizontal state of the long rod-shaped workpiece and keeping it neat; since in the workpiece direction change in Step 2, the screw head of the previous workpiece is always on one side and the screw head of the next workpiece is on the other side, the screw heads of the workpieces in the horizontal storage tank are neatly and evenly distributed at both ends, achieving the uniform distribution of long rod bolts.

[0067] After the above steps, the lying flat arrangement of the workpiece screw heads left and right forms the state required for packaging, as Figure 3 shown in such a neat arrangement. If packaging boxes are set at the outlets of the left and right arc-shaped chutes as Figure 3 shown, the packaging effect can be directly achieved. It is also possible to use a transport chain that maintains the lying flat state of the workpiece to introduce the workpiece into a dedicated box packaging machine to complete the arrangement of the workpieces before packaging.

[0068] Finally, it should be noted that the above is only used to illustrate the technical solution of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred arrangement, those of ordinary skill in the art should understand that the technical solution of the present invention (such as the form of the workpiece output by the upstream mechanical transport chain, the form of downstream workpiece box loading, the sequence of steps, etc.) can be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A long rod bolt arranging device, characterized in that, Comprising: An arc-shaped chute docked with the blanking chute of the upstream machine. Below the entrance of the arc-shaped chute, a stop bar is provided at a position shorter than the length of the screw of the workpiece to be processed. The arc length of the arc-shaped chute is greater than one radian; a retaining bar for preventing the screw head from slipping out of the arc-shaped chute is provided above the arc-shaped chute; guard plates are arranged on both sides of the arc-shaped chute; the arc-shaped chute is composed of two arc-shaped chutes with opposite entrances, one positive and one negative. Each of the two arc-shaped chutes is provided with its own stop bar and retaining bar; a deflecting rod is provided at the two opposite entrances, one positive and one negative, and the deflecting rod is connected to a deflecting driving device; a storage chute with a width matching the length of the workpiece is provided below the two opposite arc-shaped chutes; the deflecting driving device includes: a sensor installed at the outlet of the blanking chute of the upstream machine, and the sensor is connected to a driver for driving the deflecting rod to move; the driver is one of an electric cylinder, an oil cylinder, a pneumatic cylinder, or an electromagnet; the deflecting driving device includes: a lifting rod whose one end can drive the deflecting rod to lift, and the other end can be struck by a workpiece falling in one direction to generate a lifting action; a pressing rod whose one end can drive the deflecting rod to press down, and the other end can be struck by a workpiece falling in the other direction to generate a pressing down action.

2. A method for arranging long rod bolts using the device according to claim 1, characterized in that, The steps of the method are as follows: Step 1, workpiece entry: The long rod workpiece falls from the blanking chute of the thread rolling machine in a vertical state with the screw head on top. Step 2, workpiece diversion: When the workpiece enters the diversion station, if the previous workpiece moves forward, the deflecting rod is lifted to block the falling workpiece, causing the current workpiece to move in the opposite direction; if the previous workpiece moves backward, the deflecting rod is pressed down, causing the current workpiece to continue moving forward. Step 3, workpiece state change: Whether moving in the positive direction or the negative direction, the screw head of the workpiece slides down along the arc-shaped chute. At this time, the stop bar blocks the lower part of the workpiece, causing the whole workpiece to rotate around the stop bar, and the workpiece changes from a vertical state to a horizontal state. Step 4, blanking: The workpiece in the horizontal state falls into the horizontal storage chute with the length of the workpiece as the width, continuing to maintain the horizontal state of the long rod workpiece and keeping it neat; since in the workpiece diversion in Step 2, the screw head of the previous workpiece is always on one side and the screw head of the next workpiece is on the other side, the screw heads of the workpieces in the horizontal storage chute are neatly and evenly distributed at both ends, realizing the uniform distribution of long rod bolts.

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