Circular tube workpiece blanking device and shot blasting machine
By designing a sling and driving device on the shot blasting machine, using the space between the rollers to dial and guide the round tube workpieces to the storage silo, the low discharge efficiency and the simultaneous discharge of multiple round tube workpieces in the prior art are solved. The difficult problem is to achieve rapid, easy unloading of round tube workpieces and improve shot blasting efficiency.
Patent Information
- Application Number
- CN202421608909.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-09
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-07-09
AI Technical Summary
When existing shot blasting machines deal with round tube workpieces, the cutting efficiency is low, and it is difficult to achieve the simultaneous discharge of multiple round tube workpieces. Especially when the material collection device is installed at the end of the shot blasting workbench, the round tube workpieces roll. This leads to difficulty in cutting and some surfaces cannot be shot blasted.
A circular tube workpiece cutting device is designed, including a swing rack, a drive device and a storage silo. Through the swing of the swing rack and the driving device, the round tube workpiece is dialed by a V-shaped groove in the space between the rollers. Export and guide to the storage silo to achieve relatively easy unloading.
It realizes rapid and easy unloading of round tube workpieces, and can release multiple round tube workpieces at one time, improving shot blasting efficiency and simplifying the unloading process.
Smart Images
Figure CN222327862U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a device for unloading round tube workpieces on a shot blasting machine, and also relates to a shot blasting machine equipped with the unloading device. Background Art
[0002] Round tubes are a common type of workpiece for shot blasting. Most round tubes suitable for shot blasting are steel pipes, such as pipelines for transporting oil. The shot blasting of round tubes can be external shot blasting (shot blasting the outer wall of the round tube) or internal shot blasting (shot blasting the inner wall of the round tube). The loading and unloading methods vary depending on the type of shot blasting. Due to the easy rolling characteristics of round tubes, roller conveying is generally used for the conveying of round tubes on shot blasting equipment. There are V-shaped grooves on the rollers, and the axis of the rollers and the round tubes are often at an acute angle, so that two directions of force can be generated. One is the force parallel to the axial direction of the round tube, so as to transport the round tube in the axial direction, and the other is the circumferential force of the round tube, which is used to make the round tube roll, that is, the roller-based conveying can make the round tube roll while moving forward.
[0003] Roller conveyors are often configured on the shot blasting rack (with a shot blasting table) of the shot blasting machine. They are usually not directly used for loading and unloading of round tube workpieces, but the characteristics of roller conveyors need to be considered during loading and unloading. In comparison, the two most common configurations of unloading devices are to set up a feeding rack in parallel with or in conjunction with the shot blasting rack. In order to improve the efficiency of shot blasting, the roller group generally needs to convey multiple round tube workpieces at the same time. Currently, there is still a lack of applications for loading and unloading multiple round tube workpieces at the same time, but there have been some attempts, especially when unloading directly along the shot blasting table. At this time, only the accuracy of loading needs to be considered, and the requirements for unloading are relatively low. As mentioned above, round tube workpieces generally roll while moving forward axially. If a receiving device is set at the end of the shot blasting table, the round tube workpiece reaches the end of the shot blasting table and can fall directly to the receiving device after losing support.
[0004] In some implementations, the shot blasting table is designed to be a structure that can be transformed between a horizontal state and an inclined state. During shot blasting, the shot blasting table is set horizontally. After shot blasting, the table becomes inclined, and the round tube workpiece rolls down in the direction in which the shot blasting table is inclined. In order to prevent the projectiles from flowing into the storage bin of the round tube workpieces, the shot blasting table is designed as a frame structure, so that the projectiles can fall directly during shot blasting. However, it should be known that during shot blasting, the projectiles are scattered and the value of this design is not great. And the premise of this design is that the round tube workpieces generally need to be placed on the shot blasting table in a free manner. This design will inevitably cause some of the round tube workpiece surfaces to not be shot blasted. Under this condition, in a further improved structure, the round tube workpiece is set between two sets of rollers. During shot blasting, the rolling of one or two rollers drives the round tube workpiece to roll. Then, at the end of shot blasting, the shot blasting table still needs to be tilted to make the round tube workpiece roll down. The existence of the roller makes the round tube workpiece located in a wedge-shaped space. In order to make it easier for the round tube workpiece to fall, the shot blasting table needs to swing at a large angle to make the round tube workpiece fall, which is relatively difficult to achieve. Utility Model Content
[0005] The utility model aims to provide a round tube workpiece unloading device which is relatively easy to unload and can unload in groups; the utility model also provides a shot blasting machine equipped with the round tube workpiece unloading device.
[0006] According to a first aspect of an embodiment of the utility model, a round tube workpiece unloading device is provided, which is suitable for a shot blasting workbench equipped with a roller set, wherein there is an inter-roller space between adjacent rollers, and each roller has three to five V-shaped grooves in the axial direction of the roller. The round tube workpiece unloading device comprises:
[0007] The swing frame is pivotally mounted on the shot blasting workbench through a rotating shaft located on one side of the shot blasting workbench to form a lever device. When the swing frame swings to a position where the support surface of the swing frame is lower than the support surface of the roller shaft, the swing frame has an arm that intervenes in the space between the rollers, and the end of the arm exceeds the V-shaped groove farthest from the rotating shaft; a plurality of arms are arranged in the conveying direction of the shot blasting workbench;
[0008] A driving device, used for driving the swing frame to swing; and
[0009] The storage bin is located on one side of the shot blasting platform where the rotating shaft is arranged, so as to receive the round tube workpieces guided by the swinging of the swing frame.
[0010] Optionally, the ends of the arms are bent upward or have stops.
[0011] Optionally, there are two or three swing frames, which are arranged in the conveying direction of the shot blasting workbench.
[0012] Optionally, each swing frame has two to five arms.
[0013] Optionally, a portion between the swing frame and the arm bounded by the rotating shaft is a lead-out portion, and an upper surface of the lead-out portion is continuously leadable to an upper surface of the arm.
[0014] Optionally, the angle between the upper surface of the lead-out portion and the upper surface of the arm is 170°~175°.
[0015] Optionally, the length of the lead-out portion is one fifth to one quarter of the length of the arm;
[0016] The driving device is a swing power component that directly drives the rotating shaft or a driving assembly arranged on the side where the arm is located.
[0017] Optionally, the drive assembly includes a pneumatic or hydraulic cylinder located below the arm;
[0018] The push rod of the air cylinder or hydraulic cylinder is hinged to the lower side of the arm;
[0019] The cylinder seat of the air cylinder or hydraulic cylinder is hingedly mounted on a lifting frame.
[0020] Optionally, the storage bin comprises:
[0021] A cabin bottom frame extending along the conveying direction;
[0022] The blocking frame is arranged on the side of the cabin bottom frame away from the shot blasting workbench;
[0023] The material flow rack is obliquely placed on the bottom frame of the cabin and is located on one side of the shot blasting workbench; the upper part of the material flow rack extends to the location of the swing frame.
[0024] According to a second aspect of an embodiment of the utility model, a shot blasting machine is provided, comprising the round tube workpiece unloading device described in the first aspect of an embodiment of the utility model.
[0025] According to the round tube workpiece unloading device of the embodiment of the utility model, firstly, the adapted roller group can convey three to five round tube workpieces at a time, and the round tube workpiece unloading device can push out the three to five round tube workpieces at a time during unloading. Specifically, there is an inter-roller space between the rollers in the roller group, and then the adapted swing frame has an arm that can intervene in the inter-roller space. The length of the arm should be sufficient to extend its end to the V-shaped groove that can exceed the farthest distance from the axis of the swing frame. When the swing frame swings, the arm can push the round tube workpiece out of the V-shaped groove. As the arm gradually rises, a guiding slope is generated, so that the round tube workpiece moves to the side where the rotating shaft is located. Then, a storage bin is provided on the side of the shot blasting workbench where the rotating shaft is located, and the round tube workpiece pushed out by the arm rolls into the storage bin. It can be seen that the basic action of unloading is relatively simple, and unloading is very easy. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 Schematic diagram of the top view of the round tube workpiece feeding device in one embodiment (the double-dotted line portion is the shot blasting workbench).
[0027] Figure 2 It is a left-side structural schematic diagram of a round tube workpiece blanking device in one embodiment.
[0028] Figure 3 It is a schematic diagram of the front view structure of a shift fork in one embodiment.
[0029] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the shift fork in one embodiment from the left side.
[0030] In the figure: 1. gear lever, 2. storage bin, 3. rotating shaft, 4. paddle, 5. bushing, 6. bearing seat, 7. lifting frame, 8. lifting cylinder, 10. shaft body, 11. shot blasting frame, 12. chain transmission mechanism, 13. space between rollers, 14. motor, 15. material flow rod, 16. round tube workpiece, 17. first hinge shaft, 18. cotter pin, 19. second hinge shaft, 20. sprocket, 21. sprocket shaft, 22. weight reduction hole, 23. keyway, 24. shaft hole. DETAILED DESCRIPTION
[0031] The round tube workpiece 16 has typical rotating body characteristics and is easy to roll. Therefore, for the conveyance of the round tube workpiece 16 on the shot blasting line, a component with a groove is generally used for conveyance. In the field, the most common conveying component for the round tube workpiece 16 is a roller group. The roller group is usually adapted to a certain number of rollers 9 according to the length of the round tube workpiece 16, such as Figure 1 The illustrated structure has eleven rollers 9. In order to meet the needs of conveying round tube workpieces 16, V-shaped grooves are provided on the rollers 9, and the rollers 9 are arranged in an oblique manner. The so-called oblique arrangement is based on the conveying direction, that is, the axis of the rollers 9 is neither perpendicular nor parallel to the conveying direction. Figure 1 In the illustrated structure, the angle with the conveying direction is 60°. Under this condition, the round tube workpiece 16 is arranged along the conveying direction. Under this condition, when the V-groove rolls on the roller 9, the round tube workpiece 16 will move in the conveying direction and rotate around its own axis.
[0032] Since the round tube workpiece 16 has relatively large rigidity and is generally a steel tube, the arrangement between the rollers 9 is relatively loose. In other words, there is often a relatively large space between the rollers 9, which is called the roller space 13. Even if the rollers 9 are inclined, it can still meet the requirements, for example Figure 1 Intervention of middle paddle 4.
[0033] Figure 1In the process, the rollers 9 are connected in sequence by a chain transmission mechanism and driven by the same motor to ensure the synchronization of the rotation of the rollers 9. The frame part used to support the rollers 9 can be called a shot blasting frame 11 of the shot blasting workbench. The rollers 9 are suspended to one side, and most of the shots fall directly during the shot blasting process.
[0034] Figure 1 and Figure 2 In the embodiment, four V-grooves are provided on the roller 9. In some embodiments, the number of the V-grooves can be three or five. The number should not be too large, otherwise the roller 9 will be overloaded, especially when the roller 9 is cantilevered, the overall deflection of the roller 9 will be easily generated.
[0035] Furthermore, the round tube workpiece unloading device includes a swing frame, a driving device for driving the swing frame to swing, and a storage bin 2 for collecting materials, wherein the basic movement form of the swing frame is swinging, and swinging is a form of rotation relative to turnover in the mechanical field. The swinging angle range is usually less than 180°, but can also exceed 180°, and is more manifested as circumferential reciprocating motion of the corresponding components.
[0036] The swing frame is installed on one side of the shot blasting table through the rotating shaft 3. For the convenience of description, this side is called the installation side.
[0037] The axis of the rotating shaft 3 is parallel to the conveying direction of the round tube workpiece 16, so the swing plane of the swing frame must be perpendicular to the axis of the round tube workpiece 16. Therefore, when the swing frame swings, the round tube workpiece 16 will be pushed out from the side.
[0038] exist Figure 1 and Figure 2 In the illustrated structure, the swing frame is divided into two parts with the rotating shaft 3 as the boundary, which is similar to a lever device. For the convenience of description, it is directly defined as a lever device.
[0039] In the initial state, the part of the swing frame that can be inserted into the roller space 13 should be lower than the support plane of the roller shaft 9, and there is no contact between the swing frame and the round tube workpiece 16. It should be known that the support plane of the roller shaft 9 is not fixed, because the horizontal plane of the lower generatrix of the round tube workpiece 16 with different diameters will be different. Therefore, the part of the swing frame that can be inserted into the roller space 13 is preferably lower than the lower edge of the upper generatrix of the V-shaped groove.
[0040] It should be known that the supporting plane of the roller 9 is a horizontal plane here. When the working surface of the swing frame swings to a roughly horizontal plane, it comes into contact with the round tube workpiece 16, and then further swings to lift the round tube workpiece 16. Based on the characteristics of the lever device, as the swing frame further swings, the working surface will tilt. When the round tube workpiece 16 loses the restriction of the V-groove, it will roll to the side where the storage bin 2 is located.
[0041] from Figure 1 As can be seen in the figure, the swing frame is an assembly, each swing frame is equipped with multiple arms. Figure 1 and Figure 2 In the illustrated structure, the arm adopts a sheet-like structure, and is composed as follows Figure 2 The paddle 4 shown in FIG. Multiple arms can be provided by Figure 1 The rotating shafts 3 shown in the figure are assembled in one piece, and the arms are parallel to each other.
[0042] The arm can intervene in the space 13 between the rollers, and its length needs to be sufficient to swing out a group of round tube workpieces 16. Therefore, the end of the arm can extend to the lower side of the round tube workpiece 16 farthest from the rotating shaft 3, and exceed the round tube workpiece 16. Relative to the roller shaft 9, the end of the arm needs to exceed the V-groove of the roller shaft 9 farthest from the rotating shaft 3. Technical personnel in this field should have a clear understanding of this.
[0043] The arms are arranged in plurality in the conveying direction of the shot blasting worktable to support the round tube workpiece 16 at different axial positions of the round tube workpiece 16 , so that the round tube workpiece 16 can be lifted and guided, and smoothly delivered to the storage bin 2 .
[0044] Correspondingly, the storage bin 2 is located on one side of the shot blasting platform where the rotating shaft 3 is provided, that is, the first side, so as to receive the round tube workpiece guided by the swing frame.
[0045] Accordingly, regarding the driving device, on the one hand, a component that directly outputs swinging, such as a swing cylinder, a swing motor, etc., can be used, and on the other hand, a mechanism that can output swinging, such as a rack and pinion mechanism, can be selected. The rack drives the gear to generate swinging, and the swing angle of the gear is adjusted based on the stroke of the linear motion of the rack. Accordingly, the rotating shaft 3 now constitutes a gear shaft.
[0046] In a preferred embodiment, the swing frame is driven by a triangular mechanism, which is a common mechanism in the mechanical field and a variation of a four-bar mechanism, and is commonly found on equipment such as dump trucks. Figure 2 In the illustrated structure, the centrally arranged paddle 4 is selected as the power introduction component, and the lower side of the paddle 4 is hingedly mounted with a push rod of a lifting cylinder 8 through a first hinge shaft 17, and the cylinder seat of the lifting cylinder 8 is connected with the lifting cylinder 8 through the first hinge shaft 17. Figure 2 The second hinge shaft 19 shown is hingedly mounted on the upper end of the lifting frame 7.
[0047] The purpose of the lifting frame 7 is to adjust the height of the lifting cylinder 8 to adapt to the height of the shot blasting workbench.
[0048] The lifting cylinder 8 can also be replaced by a hydraulic cylinder.
[0049] exist Figure 2In the illustrated structure, the end of the paddle 4 constituting the arm is bent upward to prevent the round tube workpiece 16 from rolling down to the second side opposite to the first side when the round tube workpiece 16 is lifted from the V-shaped groove.
[0050] As for the end that is warped upward, a blocking part may be directly used to block it. The blocking part may be a bump, a baffle or a blocking pin.
[0051] Relatively speaking, whether a sheet-shaped component such as the paddle 4 or other types of arms are used, the upwardly curved end is easy to make, and for example, for a rod-shaped arm, it is relatively easier to install independent components such as bumps or stop pins.
[0052] Figure 3 and Figure 3 A paddle 4 with a relatively simple structure is shown. Its working part is a sheet-shaped body, and a hub sleeve is provided at the root. The hub sleeve has a key groove 23 and is installed on the rotating shaft 3 by a key connection.
[0053] The sheet body of the paddle 4 of the sheet structure is perpendicular to the axis of the rotating shaft 3 and has a relatively strong bending resistance under the condition of the same cross-sectional area.
[0054] Since the round tube workpiece 16 is generally long, such as a pipeline for transporting oil, the length of each pipe is generally more than 10m. In order to effectively disperse the load, there are two or three swing frames, which are arranged in the conveying direction of the shot blasting workbench.
[0055] Based on the same consideration, each swing frame has two to five arms to effectively disperse the load, and the properly arranged arms can improve the stability of moving the round tube workpiece 16.
[0056] About the arm, Figure 3 and Figure 4 The structure shown is relatively simple. The hub sleeve with the shaft hole 24 itself has a cylindrical outer profile, which is conducive to the rolling of the round tube workpiece 16 after passing over the hub sleeve.
[0057] In some embodiments, Figure 2 As shown, the portion between the swing frame and the arm bounded by the rotating shaft 3 is the lead-out portion, the upper surface of the lead-out portion is continuously leadable with the upper surface of the arm, and the lead-out portion is used to adjust the rolling direction of the circular tube workpiece 16 according to different directions.
[0058] Furthermore, the angle between the upper surface of the lead-out portion and the upper surface of the arm is 170°~175°, that is, it is slightly warped. When the paddle 4 rotates to move the circular tube workpiece 16, the lead-out portion may still be in a horizontal state, that is, the lead-out angle of the lead-out portion is relatively horizontal, which is conducive to determining the falling position of the circular tube workpiece 16.
[0059] In some embodiments, the length of the lead-out portion is one-fifth to one-quarter of the length of the arm; under this condition, the arm can be directly used as the intervention component for power.
[0060] exist Figure 2 In the illustrated structure, the storage bin 2 comprises:
[0061] A cabin bottom frame extending along the conveying direction;
[0062] The blocking frame is arranged on the side of the cabin bottom frame away from the shot blasting workbench;
[0063] The material flow rack is obliquely placed on the bottom frame of the cabin and is located on one side of the shot blasting workbench; the upper part of the material flow rack extends to the location of the swing frame.
[0064] Since the round tube workpiece 16 has relatively high rigidity and a relatively large length, a rack structure such as a bottom rack, a blocking rack, and a material flow rack is adopted, which has a simple structure and a relatively small overall weight.
Claims
1. A device for unloading round tube workpieces, suitable for a shot blasting workbench equipped with a roller set, with a roller space between adjacent rollers, and three to five V-shaped grooves on each roller in the axial direction of the roller, characterized in that: The round tube workpiece unloading device comprises: The swing frame is pivotally mounted on the shot blasting workbench through a rotating shaft located on one side of the shot blasting workbench to form a lever device. When the swing frame swings to a position where the support surface of the swing frame is lower than the support surface of the roller shaft, the swing frame has an arm that intervenes in the space between the rollers, and the end of the arm exceeds the V-shaped groove farthest from the rotating shaft; a plurality of the arms are arranged in the conveying direction of the shot blasting workbench; A driving device, used for driving the swing frame to swing; and The storage bin is located on one side of the shot blasting platform where the rotating shaft is arranged, so as to receive the round tube workpieces guided by the swinging of the swing frame.
2. The round tube workpiece unloading device according to claim 1, characterized in that: The ends of the arms are bent upward or have stops.
3. The round tube workpiece unloading device according to claim 1, characterized in that: There are two or three swing frames, which are arranged in the conveying direction of the shot blasting table.
4. The round tube workpiece unloading device according to claim 3 is characterized in that: Each swing frame has two to five arms.
5. The round tube workpiece unloading device according to claim 1, characterized in that: The portion between the swing frame and the arm bounded by the rotating shaft is a lead-out portion, and the upper surface of the lead-out portion is continuously leadable with the upper surface of the arm.
6. The round tube workpiece unloading device according to claim 5, characterized in that: The angle between the upper surface of the lead-out portion and the upper surface of the arm is 170° to 175°.
7. The round tube workpiece unloading device according to claim 5, characterized in that: The length of the lead-out portion is one fifth to one quarter of the arm length; The driving device is a swing power component that directly drives the rotating shaft or a driving assembly arranged on the side where the arm is located.
8. The round tube workpiece unloading device according to claim 7, characterized in that: The drive assembly includes a pneumatic or hydraulic cylinder located below the arm; The push rod of the air cylinder or hydraulic cylinder is hinged to the lower side of the arm; The cylinder seat of the air cylinder or hydraulic cylinder is hingedly mounted on a lifting frame.
9. The round tube workpiece unloading device according to claim 1, characterized in that: The storage bin comprises: A cabin bottom frame extending along the conveying direction; The blocking frame is arranged on the side of the cabin bottom frame away from the shot blasting workbench; The material flow rack is obliquely placed on the bottom frame of the cabin and is located on one side of the shot blasting workbench; the upper part of the material flow rack extends to the location of the swing frame.
10. A shot blasting machine, characterized in that: It comprises the round tube workpiece unloading device as described in any one of claims 1 to 9.