Automatic feeding and discharging anti-collision protection device

Abstract

The utility model discloses an automatic feeding and discharging anti-collision protection device which comprises a fixed plate, a movable plate, a material clamp and an anti-collision sensing mechanism, the material clamp is arranged on the movable plate, and the movable plate is arranged on the fixed plate in a pivoting mode so that the movable plate can pivot and swing upwards or downwards relative to the fixed plate; the anti-collision sensing mechanism comprises a reset assembly and a sensing assembly, and the reset assembly and the sensing assembly are arranged on the fixed plate and correspond to the movable plate, so that when the material clamp is subjected to upward or downward trigger force, the movable plate is driven to overcome the reset force of the reset assembly, then the material clamp swings upwards or downwards, the sensing assembly is triggered, and the anti-collision effect is achieved. And when the trigger force disappears, the movable plate drives the material clamp to return to the original position under the action of the reset force of the reset assembly. Through the trigger type mechanical sensing assembly, in the automatic feeding and discharging process, once the situation of inaccurate alignment occurs, a signal can be triggered, and the situation of collision and the like caused by forced feeding and discharging is prevented.

Description

Technical Field

[0001] The utility model relates to the structure of a loading and unloading device, in particular to an automatic loading and unloading anti-collision protection device. Background Art

[0002] In the process of automatically loading and unloading tools, electrodes or workpieces through mechanisms such as manipulators, there is often a step of aligning and clamping or removing. For example, clamping a tool into a tool holder (or removing it from the tool holder), clamping an electrode into an electrode fixing seat (or removing it from the electrode fixing seat), and clamping a workpiece into a fixed position of a fixture (or removing it from the fixture). However, during the process of clamping or removing, there must be a problem that the alignment is inaccurate and it cannot be clamped or removed. At this time, a trigger-type protection device is required to timely feedback and stop the loading and unloading when the alignment is inaccurate, preventing forced loading and unloading in case of inaccurate alignment and resulting in impacts and other situations. Summary of the Utility Model

[0003] Aiming at the above deficiencies, the purpose of the utility model is to provide an automatic loading and unloading anti-collision protection device. Through a trigger-type mechanical sensing component, during the process of automatic loading and unloading, once the alignment is inaccurate, a signal will be triggered to prevent forced loading and unloading and resulting in impacts and other situations.

[0004] The technical solution adopted by the utility model is: an automatic loading and unloading anti-collision protection device, including a fixing plate, a movable plate, a material fixture and an anti-collision sensing mechanism; the material fixture is arranged on the movable plate, and the movable plate is pivotally arranged on the fixing plate, so that the movable plate can pivotally swing upward or downward relative to the fixing plate; the anti-collision sensing mechanism includes a reset component and a sensing component, the reset component and the sensing component are arranged on the fixing plate and correspond to the movable plate, so that when the material fixture is subjected to an upward or downward triggering force, the movable plate is driven to overcome the reset force of the reset component and then swing upward or downward, and trigger the sensing component. When the triggering force disappears, under the action of the reset force of the reset component, the movable plate drives the material fixture back to its original position.

[0005] Further, the fixing plate is provided with a clearance window, and the clearance window is adapted to the movable plate, so that the movable plate has a space for pivotal swinging up and down relative to the fixing plate.

[0006] Further, the middle position of the movable plate is pivotally arranged on the fixing plate through a pin.

[0007] Further, the reset assembly includes a first screw, a second screw, a first spring, a second spring, a first pressing plate and a second pressing plate. Threads are respectively provided at the end portions of the first and second screws. The first and second pressing plates are arranged on the fixing plate. The first pressing plate is provided with a first through hole, and the second pressing plate is provided with a second screw hole adapted to the thread at the end of the second screw. A first screw hole adapted to the thread at the end of the first screw is provided at the front portion of the movable plate, and a second through hole is provided at the rear portion of the movable plate. The first spring is sleeved on the first screw. The first screw passes through the first through hole on the first pressing plate and is then fixed in the first screw hole at the front portion of the movable plate. The second spring is sleeved on the second screw. The second screw passes through the second through hole at the rear portion of the movable plate and is then fixed in the second screw hole of the second pressing plate.

[0008] Further, the first pressing plate and the second pressing plate are of an integral structure, sharing the same pressing plate, with a first through hole provided corresponding to the first screw and a second screw hole provided corresponding to the second screw.

[0009] Further, the sensing assembly includes a sensor, an induction piece and an induction piece mounting bracket. The sensor is arranged at the tail end of the fixing plate, the induction piece mounting bracket is arranged at the tail end of the material fixture, and the induction piece is arranged on the induction piece mounting bracket and corresponds to the sensor, such that when the material fixture swings upward or downward beyond a set amplitude, the induction piece will trigger the sensor.

[0010] Further, the material fixture is a cylinder fixture or a motor fixture.

[0011] Further, ball limit screws are arranged on both sides of the fixing plate at the clearance window, and limit grooves adapted to the ball limit screws are arranged on both sides of the movable plate. The balls at the ends of the ball limit screws abut against the limit grooves. With such a design, it can not only guide the up-and-down swing of the movable plate, but also limit the amplitude of the up-and-down swing of the movable plate to avoid excessive swing amplitude.

[0012] The utility model has the following advantages: By cooperating the reset assembly with the sensing assembly, an anti-collision sensing mechanism is formed. During the automatic loading and unloading process, once the alignment is inaccurate, a signal will be triggered to stop the loading and unloading action, preventing situations such as collisions caused by forced loading and unloading. Moreover, the reset assembly and the sensing assembly can, as needed, use the set size of the reset force and the size of the swing amplitude of the movable plate as triggering conditions to avoid false triggering and false alarms. This automatic loading and unloading anti-collision protection device is applicable to the automatic loading and unloading of electrodes, tools, and even workpieces.

[0013] The following further illustrates the utility model in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0014] Figure 1 Schematic diagram of the overall structure of this embodiment Figure 1 ;

[0015] Figure 2 Schematic diagram of the overall structure of this embodiment Figure 2 ;

[0016] Figure 3 Schematic diagram of the overall structure of this embodiment Figure 1 ;

[0017] Figure 4 is Figure 2 Schematic diagram of the structure after hiding the first and second pressing plates;

[0018] Figure 5 is Figure 4 Schematic diagram of the structure after hiding the movable plate;

[0019] Figure 6 is Figure 4 Schematic diagram of the mechanism after hiding the fixed plate;

[0020] Figure 7 Exploded structure schematic diagram of this embodiment;

[0021] In the figure: fixed plate 1; clearance window 11; movable plate 2; first screw hole 21; second through hole 22; material clamp 3; reset assembly 4; first screw rod 41; second screw rod 42; first spring 43; second spring 44; first pressing plate 45; first through hole 451; second pressing plate 46; second screw hole 461; sensing assembly 5; sensor 51; induction sheet 52; induction sheet mounting bracket 53; pin 6; ball limit screw 7. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0023] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0024] In addition, if the embodiments of the present utility model involve descriptions such as "first" or "second", etc., the descriptions of "first" or "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or is unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0025] See Figures 1 to 7 , the automatic loading and unloading anti-collision protection device provided in this embodiment includes a fixed plate 1, a movable plate 2, a material clamp 3 and an anti-collision sensing mechanism; the material clamp 3 is arranged on the movable plate 2, and the movable plate 2 is pivotally arranged on the fixed plate 1, so that the movable plate 2 can pivotally swing upward or downward relative to the fixed plate 1; the anti-collision sensing mechanism includes a reset component 4 and a sensing component 5, the reset component 4 and the sensing component 5 are arranged on the fixed plate 1 and correspond to the movable plate 2, so that when the material clamp 3 receives an upward or downward triggering force, it drives the movable plate 2 to overcome the reset force of the reset component 4, and then swings upward or downward, and triggers the sensing component 5. When the triggering force disappears, under the action of the reset force of the reset component 4, the movable plate 2 drives the material clamp 3 to return to the original position (horizontal position).

[0026] Specifically, the fixed plate 1 is provided with a clearance window 11, and the clearance window 11 is adapted to the movable plate 2, so that the movable plate 2 has a space for pivoting and swinging up and down relative to the fixed plate 1.

[0027] Specifically, the middle position of the movable plate 2 is pivotally arranged on the fixed plate 1 through a pin 6.

[0028] Specifically, the reset assembly 4 includes a first screw 41, a second screw 42, a first spring 43, a second spring 44, a first pressing plate 45 and a second pressing plate 46. Threads are respectively provided at the end portions of the first and second screws 41 / 42. The first and second pressing plates 45 / 46 are arranged on the fixed plate 1. The first pressing plate 45 is provided with a first through hole 451, and the second pressing plate 46 is provided with a second screw hole 461 adapted to the thread at the end of the second screw 42. A first screw hole 21 adapted to the thread at the end of the first screw 41 is provided at the front portion of the movable plate 2, and a second through hole 22 is provided at the rear portion of the movable plate 2. The first spring 43 is sleeved on the first screw 41. The first screw 41 passes through the first through hole 451 on the first pressing plate 45 and is then fixed in the first screw hole 21 at the front portion of the movable plate 2. The second spring 44 is sleeved on the second screw 42. The second screw 42 passes through the second through hole 22 at the rear portion of the movable plate 4 and is then fixed in the second screw hole 461 of the second pressing plate 46. With such an arrangement: When the movable plate is in a relatively horizontal state, both the first spring and the second spring are basically in a released state, or one of the springs is slightly stressed. After all, when the material fixture clamps the workpiece, the workpiece itself has a certain weight. When the movable plate swings upward (the front part tilts upward and the rear part descends), the rear part of the movable plate will cooperate with the cap end of the second screw to squeeze the second spring (at this time, the first spring is in a released state). When the movable plate swings downward (the front part descends and the rear part tilts upward), the movable plate drives the first screw to descend, and the cap end of the first screw will cooperate with the first fixed plate to squeeze the first spring (at this time, the second spring is in a released state).

[0029] The above is a relatively preferred structure of the reset component, because it can better ensure the force balance when the movable plate and the material fixture thereon pivot up and down. For example, when the movable plate swings upward, the second spring is in a compressed state, while the first spring is in a released state, and the second spring provides the reset force; conversely, when the movable plate swings downward, the first spring is in a compressed state, while the second spring is in a released state, and the first spring provides the reset force. Of course, it is also feasible to assemble the two sets of spring components in reverse. All in all, the first spring and the second spring cooperate with each other, one expanding and the other contracting, to ensure the force balance when the movable plate and the material fixture thereon pivot up and down, and to ensure the scientific nature of the reset. It should be noted here that although the reset components in other ways have slightly worse effects, they can also meet the reset requirements to a certain extent. For example, the middle position of the movable plate is pivotally arranged on the fixed plate through a torsion spring, and the torsion spring can also play a reset role. Another example is to only use a screw rod, a spring, and a pressing plate. However, during assembly, one end of the spring is fixed to the nut part of the screw rod, and the other end of the spring is fixed to the movable plate. In this way, the movable plate can be reset by using the compression force (compressed state) of the spring, and the movable plate can also be reset by using the tensile force (tensile state) of the spring.

[0030] Specifically, the first pressing plate 45 and the second pressing plate 46 are of an integral structure, sharing the same pressing plate, and a first through hole is provided corresponding to the first screw rod, and a second screw hole is provided corresponding to the second screw rod.

[0031] Specifically, the sensing component 5 includes a sensor 51, an induction piece 52, and an induction piece mounting bracket 53. The sensor 51 is arranged at the tail end of the fixed plate 1, the induction piece mounting bracket 53 is arranged at the tail end of the material fixture 3, and the induction piece 52 is arranged on the induction piece mounting bracket 53 and corresponds to the sensor 51, so that when the material fixture swings upward or downward beyond the set amplitude, the induction piece will trigger the sensor.

[0032] It should be noted here that the positions of the sensor and the induction piece can also be swapped, that is, the sensor is installed on the material fixture and the induction piece is installed on the fixed plate. All in all, it is to utilize the relative positions of the sensor and the induction piece, combined with the up and down swing of the movable plate, to achieve the triggering of the induction, and thus achieve the automatic anti-collision protection for loading and unloading. It should also be noted here that in one design method, the induction piece is provided with an avoidance through hole, and the avoidance through hole corresponds to the sensor. Once the movable plate swings upward or downward, causing the avoidance through hole to deviate from the position, a signal will be triggered.

[0033] Specifically, the material fixture is a cylinder fixture or a motor fixture.

[0034] Specifically, ball limiting screws 7 are arranged on both sides of the clearance window 11 of the fixed plate 1, limiting grooves adapted to the ball limiting screws 7 are arranged on both sides of the movable plate 2, and the balls at the ends of the ball limiting screws 7 abut against the limiting grooves. With such a design, it can not only guide the up-and-down swing of the movable plate, but also limit the amplitude of the up-and-down swing of the movable plate to avoid excessive swing amplitude.

[0035] The present utility model is not limited to the above embodiments. Any other automatic loading and unloading anti-collision protection device obtained by adopting the same or similar technical features as those of the above embodiments of the present utility model falls within the protection scope of the present utility model.

Claims

1. An automatic loading and unloading anti-collision protection device, comprising a fixed plate, a movable plate, a material clamp and an anti-collision sensor mechanism, characterized in that: The material clamp is arranged on a movable plate, and the movable plate is pivotally arranged on a fixed plate so that the movable plate can pivotally swing upward or downward relative to the fixed plate; the anti-collision sensor mechanism includes a reset component and a sensor component, and the reset component and the sensor component are arranged on the fixed plate and correspond to the movable plate, so that when the material clamp is subjected to an upward or downward triggering force, the movable plate overcomes the reset force of the reset component, and then swings upward or downward and triggers the sensor component. When the triggering force disappears, the movable plate returns to its original position with the material clamp under the action of the reset force of the reset component.

2. The automatic loading and unloading anti-collision protection device according to claim 1 is characterized in that: The fixed plate is provided with a space-avoiding window, and the space-avoiding window is adapted to the movable plate, so that the movable plate has space for pivoting and swinging up and down relative to the fixed plate.

3. The automatic loading and unloading anti-collision protection device according to claim 1 or 2, characterized in that: The middle position of the movable plate is pivotally arranged on the fixed plate through a pin.

4. The automatic loading and unloading anti-collision protection device according to claim 3 is characterized in that: The reset assembly includes a first screw, a second screw, a first spring, a second spring, a first pressure plate and a second pressure plate, the ends of the first and second screws are respectively provided with threads, the first and second pressure plates are arranged on the fixed plate, and the first pressure plate is provided with a first through hole, the second pressure plate is provided with a second screw hole matched with the thread of the end of the second screw, the front part of the movable plate is provided with a first screw hole matched with the thread of the end of the first screw, the rear part of the movable plate is provided with a second through hole, the first spring sleeve is provided on the first screw, the first screw passes through the first through hole on the first pressure plate, and then is fixed on the first screw hole at the front part of the movable plate, the second spring sleeve is provided on the second screw, the second screw passes through the second through hole at the rear part of the movable plate, and then is fixed on the second screw hole of the second pressure plate.

5. The automatic loading and unloading anti-collision protection device according to claim 4 is characterized in that: The first pressing plate and the second pressing plate are an integrated structure, share the same pressing plate, and have a first through hole corresponding to the first screw rod, and a second screw hole corresponding to the second screw rod.

6. The automatic loading and unloading anti-collision protection device according to claim 3 is characterized in that: The sensing assembly includes a sensor, a sensing sheet, and a sensing sheet mounting bracket. The sensor is arranged at the tail end of a fixed plate, and the sensing sheet mounting bracket is arranged at the tail end of a material clamp. The sensing sheet is arranged on the sensing sheet mounting bracket and corresponds to the sensor, so that when the material clamp swings upward or downward beyond a set amplitude, the sensing sheet will trigger the sensor.

7. The automatic loading and unloading anti-collision protection device according to claim 1 is characterized in that: The material clamp is a cylinder clamp or a motor clamp.

8. The automatic loading and unloading anti-collision protection device according to claim 2 is characterized in that: The fixed plate is provided with ball limit screws on both sides of the air-avoiding window, and the movable plate is provided with limit grooves matched with the ball limit screws on both sides, and the balls at the ends of the ball limit screws abut against the limit grooves.

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