Grabbing and stacking device for pressing process of tungsten carbide alloy blanks

Abstract

The present invention belongs to the technical field of tungsten carbide production and application, and in particular, relates to a grabbing and stacking device for a tungsten carbide alloy blank pressing process. It comprises a receiving plate, a grabbing mechanism, a flap mechanism, a conveying mechanism and a stacking mechanism arranged in sequence along the tungsten carbide alloy blank. The present invention provides a grabbing and stacking device for a tungsten carbide alloy blank pressing process. Through the coordinated arrangement of the grabbing mechanism, the flap mechanism, the conveying mechanism and the stacking mechanism, the grabbing, weighing and stacking of the tungsten carbide alloy blank on the press are effectively realized, thereby realizing the setting of its automatic operation. At the same time, the grabbing and stacking device provided by the present invention is simpler and low-cost than a multi-degree-of-freedom manipulator, and is suitable for large-scale promotion and use.

Description

Technical Field

[0001] The invention belongs to the technical field of tungsten carbide production and application, and in particular relates to a grabbing and stacking device for a tungsten carbide alloy blank pressing process. Background Art

[0002] Tungsten carbide alloy is an important hard alloy, which is widely used in engineering frames, such as the disc cutters used in shield machines. The addition of tungsten carbide alloy can effectively improve the rock breaking effect. For this reason, tungsten carbide alloy is widely used.

[0003] The main raw materials of existing tungsten carbide alloys are metallic tungsten and carbon. Tungsten powder with an average particle size of 3~5μm is dry-mixed with an equal amount of carbon black in a ball mill. After being fully mixed, it is pressed and molded and placed in a graphite plate. Then, it is heated to 1400~1700℃ in a graphite resistance furnace or induction furnace to obtain tungsten carbide alloy.

[0004] The existing tungsten carbide alloy blanks are mainly formed by pressing machines. After the workers take out the formed tungsten carbide alloy blanks from the press platform, they are weighed to meet the requirements and placed vertically in the tray to proceed to the next process. Since tungsten carbide alloys are mostly used as alloy teeth, the tungsten carbide alloy blanks are generally rectangular or cylindrical with a maximum length or diameter of no more than 5cm. Therefore, multiple presses are usually operated simultaneously in the factory to meet the needs of a graphite resistance furnace or induction furnace.

[0005] Since the pressing work of the press is fast, a worker is needed to be in charge next to the press every day, which leads to increased production costs. If a multi-degree-of-freedom manipulator is used, although it can complete the above work, the price of a multi-degree-of-freedom manipulator also increases the burden on the enterprise. Therefore, how to achieve automatic stacking of tungsten carbide alloy billets while reducing equipment costs is a technical problem that needs to be solved at present. Summary of the invention

[0006] Aiming at the technical problems existing in weighing and stacking of the tungsten carbide alloy blanks after pressing, the present invention proposes a grabbing and stacking device for the pressing process of tungsten carbide alloy blanks, which has a reasonable design, a simple structure, is convenient to process and can realize automatic weighing and stacking.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: the present invention provides a grabbing and stacking device for a tungsten carbide alloy blank pressing process, comprising a receiving plate, comprising a grabbing mechanism, a flap mechanism, a conveying mechanism and a stacking mechanism arranged in sequence along the tungsten carbide alloy blank, wherein the grabbing mechanism realizes moving the tungsten carbide alloy blank from the press to the flap mechanism by rotating; the flap mechanism comprises a flap frame arranged on one side of the grabbing mechanism and a tilting plate arranged on the top of the flip frame, a weight sensor is arranged on the top of the tilting plate, a weighing plate is connected to the top of the weight sensor, the tilting plate is arranged in a square shape, a connecting rod is arranged on the side wall of the tilting plate, a rotating shaft is arranged at one end of the connecting rod away from the tilting plate, a flip seat is arranged on the top of the flip frame, a placement groove for placing the rotating shaft is arranged on the flip seat, and an electromagnetic push rod is also arranged on the flip frame, and the power end of the electromagnetic push rod is telescopically arranged above the rotating shaft. The lifting mechanism comprises a conveyor belt arranged on one side of the tilting plate, and a baffle is arranged on the side of the conveyor belt away from the tilting plate, and an auxiliary baffle is arranged on the side of the conveyor belt close to the tilting plate, and a notch is arranged on the auxiliary baffle for flipping the tilting plate. The stacking mechanism comprises a receiving plate arranged at the end of the conveyor belt, and a limiting plate for limiting the position of the tungsten carbide alloy billet is arranged on the receiving plate. A push plate is arranged on one side of the receiving plate, and one end of the push plate is connected to a servo electric cylinder away from the receiving plate, and a stacking conveyor belt is arranged on the side of the receiving plate away from the servo electric cylinder. The receiving tray is arranged on the stacking conveyor belt, and the movement direction of the stacking conveyor belt is arranged at a vertical angle to the movement direction of the servo electric cylinder.

[0008] Preferably, the grabbing mechanism comprises a grabbing frame and a rotating motor arranged on the grabbing frame, the power end of the rotating motor is connected to a rotating plate, the rotating plate is provided with a grabbing cylinder, and the power end of the grabbing cylinder is connected to a grabbing suction cup.

[0009] Preferably, a grab plate is provided on the top of the grab frame, an arc-shaped guide rail is provided on the grab plate, and a slider matching with the arc-shaped guide rail is provided on the bottom of the rotating plate.

[0010] Preferably, lifting frames are provided at both ends of the conveyor belt, and the lifting frames include a base and a jack arranged above the base, and a power end of the jack is connected to both ends of the conveyor belt.

[0011] Preferably, a waste guide plate is provided on the side of the tilting plate away from the conveyor belt, and the waste guide plate is arranged to be inclined downward.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] 1. The present invention provides a grabbing and stacking device for a tungsten carbide alloy blank pressing process. Through the coordinated arrangement of a grabbing mechanism, a flap mechanism, a conveying mechanism and a stacking mechanism, the grabbing, weighing and stacking of the tungsten carbide alloy blank on the press are effectively realized, thereby realizing the setting of its automated operation. At the same time, the grabbing and stacking device provided by the present invention is simpler and less expensive than a multi-degree-of-freedom manipulator, and is suitable for large-scale promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 A schematic diagram of the structure of a grabbing and stacking device for the tungsten carbide alloy blank pressing process provided in Example 1;

[0016] Figure 2 A schematic diagram of the structure of the grabbing mechanism provided in Example 1;

[0017] Figure 3 A schematic diagram of the structure of the flap mechanism provided in Example 1;

[0018] Figure 4 A front view of the flap mechanism provided in Example 1;

[0019] Figure 5 A schematic diagram of the structure of the working state of the flap mechanism and the conveying mechanism provided in Example 1;

[0020] Figure 6 A schematic diagram of the structure between the conveying mechanism and the palletizing mechanism provided in Example 1;

[0021] Figure 7 A top view of the conveying mechanism and the palletizing mechanism provided in Example 1;

[0022] In the above figures, 1, grabbing mechanism; 11, grabbing frame; 12, grabbing plate; 121, arc guide rail; 13, rotating motor; 14, rotating plate; 15, grabbing cylinder; 16, grabbing suction cup; 2, flipping mechanism; 21, flipping frame; 211, flip seat; 212, placement slot; 22, tilting plate; 221, connecting rod; 222, rotating shaft; 23, weight sensor; 24, weighing plate; 25, electromagnetic push rod; 2 6. Pressing shaft; 27. Flap cylinder; 28. Universal joint; 3. Conveying mechanism; 31. Conveyor belt; 32. Bearing seat; 33. Connecting seat; 331. Guide light axis; 34. Base; 35. Jack; 36. Baffle; 37. Auxiliary baffle; 4. Stacking mechanism; 41. Receiving plate; 42. Limiting plate; 43. Pushing plate; 44. Servo electric cylinder; 45. Stacking conveyor belt; 46. Receiving tray; 5. Waste guide plate. DETAILED DESCRIPTION

[0023] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0025] Embodiment 1, as Figure 1 to Figure 7 As shown, this embodiment aims to provide a grasping and stacking device for a tungsten carbide alloy blank pressing process, aiming to solve the technical problems of high labor costs and high robot costs in the subsequent steps of the existing tungsten carbide alloy blank pressing and forming. To this end, the grasping and stacking device for a tungsten carbide alloy blank pressing process provided by this embodiment includes a receiving tray, which can be an existing receiving tray, and includes a bottom plate, side plates arranged on both sides of the bottom plate, and a back plate, and its front end and top are opened.

[0026] In order to realize automatic grabbing, weighing and stacking of tungsten carbide alloy billets, the grabbing and stacking device for the pressing process of tungsten carbide alloy billets provided in the present embodiment includes a grabbing mechanism, a flap mechanism, a conveying mechanism and a stacking mechanism arranged in sequence along the tungsten carbide alloy billets, wherein the grabbing mechanism realizes moving the tungsten carbide alloy billets from the press to the flap mechanism by rotation. Specifically, the grabbing mechanism includes a grabbing frame and a rotating motor arranged on the grabbing frame. In the present embodiment, the grabbing frame is arranged in the shape of a rectangular frame, and a grabbing plate is arranged on the top thereof. The rotating motor is fixed under the grabbing plate and the power end of the rotating motor extends out of the grabbing plate. A rotating plate is connected to the part of the power end of the rotating motor that extends out of the grabbing plate. The rotating plate is arranged in the shape of a long plate. A grabbing cylinder is arranged on the rotating plate. The central axis of the grabbing cylinder is coaxially arranged with the central axis of the press. At the same time, a grabbing suction cup is connected to the power end of the grabbing cylinder. In this way, after the grabbing suction cup grabs the tungsten carbide alloy blank using negative pressure, it is rotated at a certain angle under the action of the rotating motor, and then the tungsten carbide alloy blank is placed on the flip mechanism. In this embodiment, the rotation angle of the rotating motor is set greater than 90 degrees. The purpose is to set the flip mechanism obliquely behind the grabbing mechanism. The purpose of this is to facilitate the arrangement of the transportation of qualified materials and unqualified materials.

[0027] Considering that the grabbing cylinder is arranged on the rotating plate, in order to ensure the grabbing stability of the grabbing cylinder, in this embodiment, an arc guide rail is arranged on the grabbing plate, and a slider matching the arc guide rail is arranged at the bottom of the rotating plate. In this way, the entire rotating plate is equivalent to having two supports, thereby ensuring the stability of the rotation of the rotating plate.

[0028] In order to complete the work of weighing and transportation after weighing, the flip mechanism provided in this embodiment includes a flip frame arranged on one side of the grabbing mechanism and a tilting plate arranged on the top of the flip frame. The flip frame is also arranged in a rectangular frame shape, and the tilting plate is arranged in a square plate shape. A weight sensor is arranged on the top of the tilting plate, and a weighing plate is connected to the top of the weight sensor. In this way, when the tungsten carbide alloy billet is placed on the weighing plate, the weight sensor senses the weight and realizes weighing.

[0029] In this way, the weighing work is completed. After the weighing is completed, the tungsten carbide alloy billets need to be transported. When stacking, the tungsten carbide alloy billets need to be placed vertically. For this reason, the flat state needs to be adjusted to a vertical state. For this reason, a connecting rod is provided on the side wall of the tilting plate. In this embodiment, two spaced connecting rods are provided on each side wall. A rotating shaft is provided at one end of the connecting rod away from the tilting plate. A flip seat is provided on the top of the flip frame. A placement groove for placing the rotating shaft is provided on the flip seat. The placement groove is a semicircular groove. At the same time, an electromagnetic push rod is also provided on the flip frame. The electromagnetic push rod The power end of the push rod is telescopically arranged above the rotating shaft. In the present embodiment, in order to lower the height of the electromagnetic push rod so as not to affect the flipping of the weighing plate, a pressure shaft is connected to the power end of the electromagnetic push rod in the present embodiment. The pressure shaft is arranged in an inverted L-shape, and a guide hole is arranged on the flipping frame. The pressure shaft passes through the guide hole. In this way, the pressure shaft can be telescoped above the rotating shaft under the action of the electromagnetic push rod. In the present embodiment, in order to facilitate the rotation of the rotating shaft, an annular groove is arranged in the middle of the rotating shaft. The arrangement of the annular groove not only facilitates the reduction of the height of the pressure shaft, but also enables the rotating shaft to rotate better.

[0030] In order to achieve a 90° flip of the tilting plate, a vertically arranged flap cylinder is provided in the flap frame, and the bottom of the flap cylinder and the power end of the flap cylinder are respectively connected to the flip frame and the tilting plate through a universal shaft coupling. In this way, it is only necessary to press any one of the four rotating axes of the tilting plate to enable the tilting plate to be flipped in the direction of the rotating axis under the action of the flap cylinder. In this embodiment, a waste guide plate is provided on the side of the tilting plate away from the conveying mechanism, and the waste guide plate is tilted downward. In this way, unqualified waste products can slide directly into the waste box through the waste guide plate, while qualified products can flip the tilting plate to make it slide onto the conveying mechanism, and at the same time, the change from a flat state to a vertical state is achieved. It should be noted that at this time, it is necessary to slowly control the operation of the flap cylinder to avoid flipping the tungsten carbide alloy billet out.

[0031] In order to receive and transport tungsten carbide alloy billets, in this embodiment, the conveying mechanism includes a conveyor belt arranged on one side of the tilting plate, a baffle is arranged on the side of the conveyor belt away from the tilting plate, an auxiliary baffle is arranged on the side of the conveyor belt close to the tilting plate, and a notch for flipping the tilting plate is arranged on the auxiliary baffle. The baffle and the auxiliary baffle are coordinated to limit the shape of the tungsten carbide alloy billet to prevent it from flipping over on the conveyor belt. In this embodiment, the baffle and the auxiliary baffle are suspended above the conveyor belt to prevent the conveyor belt from rubbing against them.

[0032] Considering that the tungsten carbide alloy blank has a rectangular shape and a cylindrical shape, when it is in a cylindrical state, it is equivalent to a wheel state, and it is not necessary to use a conveyor belt. By utilizing its round shape, the conveyor belt can be transported by rolling. For this reason, a lifting frame is provided at both ends of the conveyor belt. As is known to all, a belt-type conveying mechanism includes a belt and rollers mounted on both ends of the belt, and bearings and bearing seats are provided on both sides of the rollers to realize the transmission of the conveyor belt. In this embodiment, a connecting seat is provided at the bottom of the two bearing seats at the same end, and a lifting frame is provided below the connecting seat. The lifting frame includes a base and a jack arranged above the base. In this embodiment, in order to ensure the stability of the lifting and lowering of the connecting seat, the base is arranged in an I-shape, so that guide light axes are provided at the four corners of the connecting seat, and the guide light axes are arranged through the top plate of the base. The power end of the conveyor belt is connected to the bottom of the connecting seat, so that the conveyor belt can be adjusted from a horizontal state to an inclined state. It should be noted that only the end close to the flap mechanism needs to be adjusted, and the use of the jack is mainly due to the fact that the jack can maintain the state without the need for a hydraulic pump station, which can save materials.

[0033] In this way, the conveying work of the tungsten carbide alloy blanks is completed by using the conveyor belt, and then stacking is required. For this purpose, the stacking mechanism includes a receiving plate arranged at the end of the conveyor belt, and a limit plate for limiting the position of the tungsten carbide alloy blanks is arranged on the receiving plate. The limit plates are arranged on both sides of the receiving plate, wherein a notch is arranged on one side close to the conveyor belt, and the limit plates on the other side achieve the blocking of the tungsten carbide alloy blanks so that they fall on the receiving plate. Due to the effect of inertia, the tungsten carbide alloy blanks will continue to slide on the receiving plate, and for this reason, a limit plate for limiting the position of the tungsten carbide alloy blanks is arranged on the receiving plate. Considering that if the speed of the tungsten carbide alloy blanks is too high, when it hits the limit plate, it will fall down, so that it becomes flat again. For this reason, the slope of the guide ramp should not be too large, so that the tungsten carbide alloy blanks fall slowly on the receiving plate as the standard.

[0034] In order to push the tungsten carbide alloy blanks, a push plate is provided on one side (rear end) of the receiving plate, and a servo electric cylinder is connected to the end of the push plate away from the receiving plate. In this embodiment, the main purpose of using the servo electric rod is to control the distance of its power end, while the cylinder has the problem of poor control. At the same time, a stacking conveyor belt is provided on the side of the receiving plate away from the servo electric cylinder, and the receiving tray is provided on the stacking conveyor belt, and the movement direction of the stacking conveyor belt is set at a vertical angle to the movement direction of the servo electric cylinder. In this way, after stacking one column, the stacking conveyor belt moves, driving the receiving tray to move the distance of a tungsten carbide alloy blank, and the next column of stacking can be completed.

[0035] Through the above settings, the automatic grabbing, weighing and stacking of tungsten carbide alloy billets are effectively realized. Its structure is mainly realized by the coordinated setting of motors, cylinders, belt conveyor mechanisms and servo electric cylinders. Its cost is much lower than that of multi-freedom robots, thereby reducing the cost of the enterprise.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A grabbing and stacking device for a tungsten carbide alloy blank pressing process, comprising a receiving tray, characterized in that: The invention comprises a grabbing mechanism, a flap mechanism, a conveying mechanism and a stacking mechanism which are sequentially arranged along the tungsten carbide alloy blank, wherein the grabbing mechanism realizes moving the tungsten carbide alloy blank from the press to the flap mechanism by rotating; the flap mechanism comprises a flap frame arranged on one side of the grabbing mechanism and a tilting plate arranged on the top of the flip frame, a weight sensor is arranged on the top of the tilting plate, a weighing plate is connected to the top of the weight sensor, the tilting plate is arranged in a square shape, a connecting rod is arranged on the side wall of the tilting plate, a rotating shaft is arranged at one end of the connecting rod away from the tilting plate, a flip seat is arranged on the top of the flip frame, a placement groove for placing the rotating shaft is arranged on the flip seat, an electromagnetic push rod is also arranged on the flip frame, a power end of the electromagnetic push rod is telescopically arranged above the rotating shaft, a pressing shaft is connected to the power end of the electromagnetic push rod, the pressing shaft is arranged in a tilted L-shape, a guide hole is arranged on the flip frame, the pressing shaft passes through the guide hole, and the pressing shaft is realized under the action of the electromagnetic push rod. The telescopic structure above the rotating shaft is provided with a vertically arranged flap cylinder in the flap frame, and the bottom of the flap cylinder and the power end of the flap cylinder are respectively connected to the flip frame and the tilting plate through a universal shaft coupling. The tilting plate can be flipped 90 degrees in two directions under the action of the flap cylinder. The conveying mechanism includes a conveyor belt arranged on one side of the tilting plate, and a baffle is arranged on the side of the conveyor belt away from the tilting plate, and an auxiliary baffle is arranged on the side of the conveyor belt close to the tilting plate, and a notch is arranged on the auxiliary baffle for flipping the tilting plate. The stacking mechanism includes a receiving plate arranged at the end of the conveyor belt, and a limiting plate for limiting the position of the tungsten carbide alloy billet is arranged on the receiving plate. A push plate is arranged on one side of the receiving plate, and one end of the push plate is connected to a servo electric cylinder, and a stacking conveyor belt is arranged on the side of the receiving plate away from the servo electric cylinder, and the receiving plate is arranged on the stacking conveyor belt, and the movement direction of the stacking conveyor belt is arranged at a vertical angle to the movement direction of the servo electric cylinder.

2. The grabbing and stacking device for the pressing process of tungsten carbide alloy blanks according to claim 1 is characterized in that: The grabbing mechanism comprises a grabbing frame and a rotating motor arranged on the grabbing frame, a rotating plate is connected to the power end of the rotating motor, a grabbing cylinder is arranged on the rotating plate, and a grabbing suction cup is connected to the power end of the grabbing cylinder.

3. The grabbing and stacking device for the pressing process of tungsten carbide alloy blanks according to claim 2 is characterized in that: A grab plate is arranged on the top of the grab frame, an arc-shaped guide rail is arranged on the grab plate, and a sliding block matched with the arc-shaped guide rail is arranged on the bottom of the rotating plate.

4. The grabbing and stacking device for the pressing process of tungsten carbide alloy blanks according to claim 1, 2 or 3, characterized in that: Lifting frames are arranged at both ends of the conveyor belt. The lifting frames include a base and a jack arranged above the base. The power end of the jack is connected to both ends of the conveyor belt.

5. The grabbing and stacking device for the pressing process of tungsten carbide alloy blanks according to claim 4 is characterized in that: A waste guide plate is arranged on one side of the tilting plate away from the conveyor belt, and the waste guide plate is arranged to be inclined downward.

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