Multi-position heading machine for screw machining

Abstract

The invention discloses a multi-position heading machine for screw machining, and relates to the technical field of screw machining, the multi-position heading machine comprises a discharging mold and a heading mechanism, the discharging mold comprises a foundation plate, a mold table and a movable mold, the movable mold is movably connected to the mold table, and the mold table and the foundation plate are respectively provided with a through opening for a screw to pass through; a first limiting plate is installed on the side, facing the heading mechanism, of the die table. The heading mechanism comprises a movable base plate, a heading gun and a linear driver, the heading gun is installed on the face, facing the mold table, of the movable base plate, the linear driver is used for driving the movable base plate to move towards the foundation plate, and a second limiting plate is installed on the face, facing the mold table, of the movable base plate; the first limiting plate and the second limiting plate are horizontally collinear, the opposite ends of the first limiting plate and the second limiting plate are provided with a clamping groove set and an insertion block set which are matched, and the length of the first limiting plate and the second limiting plate when the first limiting plate and the second limiting plate are connected in an inserted mode is larger than the length of the movable mold. The heading machine has the effects that the damage probability of the heading machine is reduced, and the machining accuracy is improved.

Description

Technical Field

[0001] The present application relates to the technical field of screw processing, and in particular to a multi-position heading machine for screw processing. Background Art

[0002] The screw consists of a shank and a head. The thread of the shank is generally processed by a thread rolling machine, while the head is formed by a heading machine.

[0003] When the heading machine is working, the feeding mechanism delivers the blank from the side to the front of the heading gun head (knife head), the heading gun presses forward, the front end of the blank extends into the discharge die, and the rear end is punched out to form a head structure (such as a countersunk head).

[0004] The following problems currently exist in the above production: The heading gun contacts the discharge die each time to complete the stamping. During the process, the feeding mechanism needs to be withdrawn in time, otherwise the gun head will hit the feeding mechanism. The whole process is relatively fast and there is no limit on feeding. A slight error may cause the heading gun to be deformed and damaged. Therefore, this application proposes a new technical solution. Summary of the invention

[0005] In order to reduce the damage probability of the heading machine and improve the processing accuracy, the present application provides a multi-position heading machine for screw processing.

[0006] The present application provides a multi-position heading machine for screw processing, which adopts the following technical solution: A multi-position heading machine for screw processing, comprising a discharge die and a heading mechanism, characterized in that: the discharge die comprises a base plate, a die table and a movable die, the die table is fixed to the side plate surface of the base plate, the movable die is movably connected to the die table, and the die table and the base plate are respectively provided with openings for screws to pass through; The heading mechanism is located on one side of the base plate where the mold platform is installed and is separated from the mold platform. A limiting plate 1 is installed on the side of the mold platform facing the heading mechanism; the heading mechanism includes a movable base plate, a heading gun and a linear drive. The movable base plate is located on the side of the mold platform away from the base plate. The heading gun is installed on the side of the movable base plate facing the mold platform. The linear drive is used to drive the movable base plate to move toward the base plate. A limiting plate 2 is installed on the side of the movable base plate facing the mold platform. The limiting plate 1 and the limiting plate 2 are horizontally collinear and have a slot group and an insert block group adapted for forming at the opposite ends. The length of the limiting plate 1 and the limiting plate 2 when plugged into each other is greater than the length of the movable mold. The movable mold is an electric structure and moves in a vertical plane according to control instructions. The movable mold is electrically connected to a controller, and the controller is electrically connected to a movement monitoring module. The movement monitoring module includes a detection unit 1, and the detection unit 1 is used to detect the movement amount of the blank delivery mechanism during delivery.

[0007] Optionally, the limit plate 1 is fixed with a metal plate on the slot group, and the metal plate at least contacts the deepest and shallowest slot structures of the slot group. The limit plate 2 is provided with multiple electrode points on the plug block group. The metal plate and the electrode points constitute a breaking circuit and are electrically connected to the controller.

[0008] Optionally, the detection unit 1 includes two laser ranging units, the detection line of one laser ranging unit falls on a pre-set inclined surface or curved surface on the delivery mechanism that varies with height thickness, and the detection line of the other laser ranging unit is parallel to the moving path of the delivery mechanism and is directed toward a fixed structural surface on the delivery mechanism.

[0009] Optionally, the movable mold includes an outer fixing sleeve, an inner elastic clamp, a locking ring, an inner mold core and a driving mechanism, the outer fixing sleeve is inserted into a socket pre-opened on the mold platform, the inner elastic clamp includes a plurality of claw plates distributed around the central axis of the outer fixing sleeve and a root ring fixed to one end of the claw plate, the locking ring covers the end of the inner elastic clamp away from the mold platform and is detachably connected to the outer end of the outer fixing sleeve, the root ring extends between the outer fixing sleeve and the locking ring, the inner mold core is clamped on the inner side of the inner elastic clamp, and the driving mechanism is used to drive the outer fixing sleeve to move relative to the mold platform.

[0010] Optionally, the driving mechanism includes four arc-shaped bags distributed around the outer fixed sleeve, a flow meter, a solenoid valve and a pump corresponding to each arc-shaped bag, the inner wall of the socket of the mold platform is concave to form an installation groove for placing the arc-shaped bag, the arc-shaped bag is connected to the pump through a pipeline and a flow meter and a solenoid valve are installed on the pipeline, the flow meter and the solenoid valve are electrically connected to the controller, and the controller is also electrically connected to the pump.

[0011] Optionally, a liquid pressure sensor is inserted into the arc-shaped bag, and the liquid pressure sensor is electrically connected to the controller; the arc-shaped bag is installed with a pressure relief valve through a pipeline.

[0012] Optionally, an electric cylinder is embedded in one of the sections of the mold platform that is divided into two along a plane perpendicular to the central axis, and the telescopic direction of the electric cylinder is parallel to the central axis direction of the mold platform and is electrically connected to the controller; Four guide rods are evenly fixed on a section of the outer wall of the outer fixed sleeve insert die table, two of the four guide rods are horizontally symmetrically distributed, and the other two are vertically symmetrically distributed; A slider is sleeved on the guide rod, and the facing sides of the two sections of the mold platform are concave to form a movable groove to accommodate each guide rod and slider. A pressure plate corresponding to each slider is fixed in the movable groove. The pressure plate moves along the central axis direction of the mold platform and is fixed to the telescopic rod end of the electric cylinder.

[0013] Optionally, a plurality of mold platforms and movable mold groups are installed on the base plate, and an appropriate number of heading guns are installed on the movable base plate.

[0014] In summary, this application includes the following beneficial technical effects: 1. By setting relative and matching limit plates 1 and 2 on the discharge die and the heading mechanism, a gap is kept between the two when the heading mechanism stops. Therefore, when the delivery mechanism delivers the blank from the side, as long as its size is not larger than the gap, the collision can be reduced, and it will not affect even if the delivery mechanism is slow to retreat; 2. It can also track the movement of the feeding mechanism and then control the movable mold to adjust the position accordingly to ensure the smooth and accurate screw driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of this application; Figure 2 It is a partial structural explosion diagram of the present application; Figure 3 It is a schematic diagram of the control structure of this application; Figure 4 It is a partial structural schematic diagram of the driving mechanism of the present application; Figure 5 yes Figure 2 A magnified schematic diagram of part A.

[0016] Explanation of the accompanying drawings: 1. Base plate; 2. Mold base; 21. Limit plate 1; 3. Movable mold; 31. External fixing sleeve; 32. Internal elastic clamp; 33. Locking ring; 34. Driving mechanism; 341. Arc-shaped bag; 342. Pump; 343. Flow meter; 344. Solenoid valve; 4. Controller; 5. Movable base plate; 51. Limit plate 2; 6. Linear drive; 7. Mobile monitoring module; 71. Detection unit 1; 72. Heading detection unit 2; 81. Liquid pressure sensor; 82. Pressure relief valve; 91. Guide rod; 92. Slider; 93. Press plate; 94. Electric cylinder. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-5 This application is described in further detail.

[0018] The embodiment of the present application discloses a multi-position heading machine for screw processing.

[0019] Reference Figure 1 and Figure 2 The multi-position heading machine for screw processing includes a discharge die and a heading mechanism, both of which are installed on the base of the heading machine and cooperate with each other to meet the needs of screw heading.

[0020] The discharge mold includes a base plate 1, a mold table 2 and a movable mold 3, wherein the base plate 1 is installed vertically and has a through hole for screws to pass through in the thickness direction; the discharge mold and the heading mechanism are horizontally distributed, the base plate 1 is installed with the mold table 2 facing the heading mechanism, and the movable mold 3 is movably connected to the mold table 2 and is an electric structure. A limit plate 21 is installed on the side of the mold table 2 facing the heading mechanism.

[0021] The heading mechanism includes a movable base plate 5, a heading gun and a linear drive 6, wherein the movable base plate is located on the side of the mold table 2 facing away from the base plate 1, and the heading gun is installed on the side of the movable base plate 5 facing the mold table 2. The style of the heading gun can be selected according to the screw heading style requirements, which is not shown in the figure.

[0022] The linear drive 6 can be a pneumatic cylinder or a hydraulic cylinder, whose cylinder body is fixed to the fixed structure on the base, and the end of the telescopic rod is fixed to the movable base plate 5 so as to push the movable base plate 5 toward the base plate 1 to complete the heading operation.

[0023] A limit plate 2 51 is installed on the side of the movable base plate 5 facing the mold table 2. The limit plate 1 21 and the limit plate 2 51 are horizontally collinear and have a slot group and a plug block group formed to match each other at the opposite ends. The length of the limit plate 1 21 and the limit plate 2 51 when plugged into each other is greater than the movable mold 3, that is, when the heading is completed, there is a gap between the movable base plate 5 and the base plate 1 and the movable mold 3. Therefore, when the material delivery mechanism (such as a robotic arm, a telescopic clamp holding the blank) delivers the blank from the side, as long as its size is not larger than the gap, the occurrence of collision can be reduced, and it will not affect even if the material delivery is slow and retreated.

[0024] Reference Figure 3 At the same time, the present application also includes a controller 4, which is electrically connected to the movable mold 3 and is used to control the movable mold 3 to move in the vertical plane. The controller 4 is also electrically connected to a mobile monitoring module 7, and the mobile monitoring module 7 includes a detection unit 71. The detection unit 71 is used to detect the movement amount of the blank delivery mechanism during delivery.

[0025] Therefore, the present application can also track the movement amount of the material delivery mechanism, and then control the movable mold 3 to adjust the position accordingly to ensure the smooth progress and accuracy of the screw heading.

[0026] In another embodiment of the present application, the slot group at the outer end of the limiting plate 1 21 is continuous, has different depths and is arranged vertically to form steps and slots; the slot group at the opposite end of the limiting plate 2 51 is adapted.

[0027] Furthermore, the limit plate 1 21 is fixed with a metal plate on the slot group, and the metal plate is installed in an embedded manner so as to be embedded in at least the deepest and shallowest slot structures of the slot group; the limit plate 2 51 is provided with a plurality of electrode points on the plug-in block group, and the metal plate and the electrode points constitute a breaking circuit and are electrically connected to the controller 4.

[0028] Example: A metal plate is connected to the out terminal of the controller 4 and a corresponding electrode point is connected to the int terminal. When the application completes a header normally, the corresponding metal plate and electrode point contact form a closed loop. In theory, the controller 4 outputs a high level 1, and the corresponding signal is received and is a high level 1. However, if no signal is returned, that is, the int terminal is a low level 0, it may be: 1) The movement of the heading mechanism is insufficient, and the limit plate 1 21 and the limit plate 2 51 are not plugged into each other; 2) Other objects are accidentally put between the heading mechanism and the discharge mold; at this time, in order to prevent machine damage and safety accidents, the machine must be stopped in time.

[0029] When there are multiple electrode points, the present application can even determine the deformation of the heading mechanism caused by an unexpected collision based on the number of signals returned previously.

[0030] In another embodiment of the present application, the above-mentioned detection unit 71 includes two laser ranging units (sensors), and the detection line of one laser ranging unit falls on a pre-set inclined surface or arc surface on the material delivery mechanism that changes with height thickness. That is, if the material delivery mechanism moves in the vertical direction, it can be detected by the laser ranging unit, and the vertical movement of the material delivery mechanism can be analyzed based on the measured change at the same horizontal distance.

[0031] The detection line of another laser ranging unit is parallel to the moving path of the material delivery mechanism and faces a fixed structural surface on the material delivery mechanism. That is, if the material delivery mechanism starts to move to deliver material, it can be detected by the laser ranging unit, so as to judge whether the material delivery mechanism moves too much or too little.

[0032] In one embodiment of the present application, the movable mold 3 includes an outer fixing sleeve 31 , an inner elastic clamping jaw 32 , a locking ring 33 , an inner mold core and a driving mechanism 34 .

[0033] The outer fixing sleeve 31 is in the shape of a stepped tube and is inserted into a pre-opened socket (one end is open) on the die table 2. The inner elastic clamping claw 32 includes a plurality of claw plates distributed around the central axis of the outer fixing sleeve and a root ring fixed to one end of the claw plate. The inner elastic clamping claw 32 is two and is fixed with screws in a divergent manner. One inner elastic clamping claw 32 is inserted into the outer fixing sleeve 31, with the root ring facing outward. The other inner elastic clamping claw 32 is covered by a locking ring 33. The locking ring 33 is connected to the outer end of the outer fixing sleeve 31 by bolts, and the root ring extends between the outer fixing sleeve 31 and the locking ring 33 and is passed through by the above bolts. The inner mold core (not shown in the figure, such as a tube structure, determined according to the style of the processed screws) is clamped on the inner side of the inner elastic clamping claw 32; the driving mechanism 34 is used to drive the outer fixing sleeve 31 to move relative to the die table 2.

[0034] According to the above configuration, the present application can relatively conveniently replace the inner mold core to meet the processing requirements of various screws.

[0035] Reference Figure 4 In another embodiment of the present application, the driving mechanism 34 includes four arc-shaped bags 341 distributed around the outer fixing sleeve 31, and the arc-shaped bags 341 can be made of rubber; the inner wall of the insertion hole of the mold table 2 for the outer fixing sleeve 31 to be inserted is concave to form an installation groove for placing the arc-shaped bag 341, and the arc-shaped bag 341 is connected to the pump 342 through a pipeline, and a flow meter 343 and an electromagnetic valve 344 are installed on the pipeline, and the flow meter 343 and the electromagnetic valve 344 are electrically connected to the controller 4, and the controller 4 is electrically connected to the pump 342.

[0036] According to the above configuration, the controller 4 can calculate the liquid volume in each arc-shaped bag 341 according to the detection value of the flow meter 343 and the working information of the pump 342 , and change the position of the external fixing sleeve 31 by adjusting the liquid volume in each arc-shaped bag 341 by controlling the pump 342 .

[0037] Furthermore, a liquid pressure sensor 81 is respectively inserted into each of the above-mentioned arc-shaped bags 341 and a pressure relief valve 82 is installed through a pipeline. The liquid pressure sensor 81 is electrically connected to the controller 4. The valve body of the pressure relief valve 82 is located outside the mold table 2. The pressure relief valve 82 preferably has an electrically controlled valve structure to facilitate pressure relief control.

[0038] According to the above configuration, firstly, the controller 4 can determine whether the pressure is too low, i.e., liquid leakage, based on each liquid pressure sensor 81; secondly, it can release the pressure in time when the pressure is too high to prevent the arc-shaped bag 341 from being damaged.

[0039] Reference Figure 5 In another embodiment of the present application, the mold platform 2 is divided into two parts along the vertical plane; four guide rods 91 are evenly fixed on a section of the outer wall of the mold platform 2 inserted into the outer fixing sleeve 31, two of the four guide rods 91 are horizontally symmetrically distributed, and the other two are vertically symmetrically distributed; a slider 92 is sleeved on the guide rod 91.

[0040] The two sections of the mold platform 2 are concavely formed on the opposite sides to form movable grooves for accommodating the guide rods 91 and the sliders 92. The movable grooves are fixed with pressing plates 93 corresponding to the sliders 92. The pressing plates 93 move along the central axis of the mold platform 2. An electric cylinder 94 is embedded in one section of the mold platform 2. The telescopic rod end of the electric cylinder 94 fixes the pressing plate 93. The two sections of the mold platform 2 are fixed with bolts.

[0041] According to the above arrangement, if the inner mold core needs to be moved upward, the corresponding electric cylinder 94 will drive the pressure plate 93 to press the slider 92 on the two symmetrical guide rods 91, so that it is restricted to move only up and down. Therefore, the present application can reduce the probability of erroneous movement of the movable mold 3.

[0042] In another embodiment of the present application, the mobile monitoring module 7 further includes a second head detection unit 72 . The second head detection unit 72 can be a laser ranging sensor or an acoustic wave ranging sensor and is installed on the side of the base plate 1 facing the movable base plate 5 .

[0043] In order to make the processing more efficient, multiple mold tables 2 and movable molds 3 are installed on the base plate 1, and multiple heading guns are arranged on the corresponding movable base plate 5, that is, one machine with multiple workstations is realized to meet the needs of processing multiple screws at one time.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-position heading machine for screw processing, comprising a discharge die and a heading mechanism, characterized in that: The discharge mold comprises a base plate (1), a mold platform (2) and a movable mold (3), wherein the mold platform (2) is fixed to a side plate surface of the base plate (1), and the movable mold (3) is movably connected to the mold platform (2), and the mold platform (2) and the base plate (1) are respectively provided with openings for screws to pass through; The heading mechanism is located on a side of the base plate (1) on which the die table (2) is mounted and is separated from the die table (2); a limiting plate 1 (21) is installed on a side of the die table (2) facing the heading mechanism; the heading mechanism comprises a movable base plate (5), a heading gun and a linear drive (6); the movable base plate (5) is located on a side of the die table (2) facing away from the base plate (1); the heading gun is installed on a side of the movable base plate (5) facing the die table (2); the linear drive (6) is used to drive the movable base plate (5) to move toward the base plate (1); a limiting plate 2 (51) is installed on a side of the movable base plate (5) facing the die table (2); the limiting plate 1 (21) and the limiting plate 2 (51) are horizontally collinear and have a slot group and an insert block group formed to match them at their opposite ends; the length of the limiting plate 1 (21) and the limiting plate 2 (51) when plugged into each other is greater than the length of the movable mold (3); The movable mold (3) is an electric structure and moves in a vertical plane according to a control instruction. The movable mold (3) is electrically connected to a controller (4). The controller (4) is electrically connected to a movement monitoring module (7). The movement monitoring module (7) includes a detection unit 1 (71). The detection unit 1 (71) is used to detect the movement amount of the blank delivery mechanism during delivery.

2. The multi-position heading machine for screw processing according to claim 1, characterized in that: The first limit plate (21) is fixed with a metal plate on the slot group, the metal plate at least contacts the deepest and shallowest slot structures of the slot group, the second limit plate (51) is provided with a plurality of electrode points on the plug block group, the metal plate and the electrode points constitute a disconnecting circuit and are electrically connected to the controller (4).

3. The multi-position heading machine for screw processing according to claim 1, characterized in that: The detection unit 1 (71) includes two laser distance measuring units, the detection line of one laser distance measuring unit falls on a pre-set inclined surface or arc surface on the material delivery mechanism that changes with height and thickness, and the detection line of the other laser distance measuring unit is parallel to the moving path of the material delivery mechanism and faces a fixed structural surface on the material delivery mechanism.

4. The multi-position heading machine for screw processing according to claim 1, characterized in that: The movable mold (3) comprises an outer fixing sleeve (31), an inner elastic clamping jaw (32), a locking ring (33), an inner mold core and a driving mechanism (34); the outer fixing sleeve (31) is inserted into a socket pre-opened on the mold platform (2); the inner elastic clamping jaw (32) comprises a plurality of claw plates distributed around the central axis of the outer fixing sleeve (31) and a root ring fixed to one end of the claw plate; the locking ring (33) covers the end of the inner elastic clamping jaw (32) away from the mold platform (2) and is detachably connected to the outer end of the outer fixing sleeve (31); the root ring extends between the outer fixing sleeve (31) and the locking ring (33); the inner mold core is clamped on the inner side of the inner elastic clamping jaw (32); and the driving mechanism (34) is used to drive the outer fixing sleeve (31) to move relative to the mold platform (2).

5. The multi-position heading machine for screw processing according to claim 4, characterized in that: The driving mechanism (34) comprises four arc-shaped capsules (341) distributed around the outer fixing sleeve (31), flow meters (343) corresponding to each arc-shaped capsule (341), a solenoid valve (344) and a pump (342); the inner wall of the insertion hole of the mold platform (2) is concave to form a mounting groove for placing the arc-shaped capsule (341); the arc-shaped capsule (341) is connected to the pump (342) through a pipeline, and the flow meter (343) and the solenoid valve (344) are installed on the pipeline; the flow meter (343) and the solenoid valve (344) are electrically connected to the controller (4), and the controller (4) is also electrically connected to the pump (342).

6. The multi-position heading machine for screw processing according to claim 5, characterized in that: A liquid pressure sensor (81) is inserted into the arc-shaped bag (341), and the liquid pressure sensor (81) is electrically connected to the controller (4); a pressure relief valve (82) is installed in the arc-shaped bag (341) via a pipeline.

7. The multi-position heading machine for screw processing according to claim 4, characterized in that: An electric cylinder (94) is embedded in one section of the mold platform (2) divided into two along a plane perpendicular to the central axis, the electric cylinder (94) has a telescopic direction parallel to the central axis direction of the mold platform (2) and is electrically connected to a controller (4); Four guide rods (91) are evenly fixed on a section of the outer wall of the insert mold platform (2) of the outer fixing sleeve (31), two of the four guide rods (91) are horizontally symmetrically distributed, and the other two are vertically symmetrically distributed; The guide rod (91) is sleeved with a slider (92), and the two opposite sides of the mold platform (2) are concave to form a movable groove for accommodating each guide rod (91) and the slider (92), and a pressing plate (93) corresponding to each slider (92) is fixed in the movable groove, and the pressing plate (93) moves along the central axis direction of the mold platform (2) and is fixed to the telescopic rod end of the electric cylinder (94).

8. The multi-position heading machine for screw processing according to claim 7, characterized in that: A plurality of die platforms (2) and movable die sets are mounted on the base plate (1), and a matching number of heading guns are mounted on the movable base plate (5).

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