U-shaped pipe automatic punching machine and U-shaped pipe punching machining method

Abstract

The invention relates to an automatic U-shaped pipe punching machine and a U-shaped pipe punching machining method. An automatic punching machine for U-shaped pipes comprises a punching assembly and a storage assembly, the storage assembly comprises a storage frame used for limiting translation of stored pipes to be machined, the storage frame forms a storage space, and a positioning assembly and the punching assembly are arranged on the side of the storage space. A discharging opening communicating with the storage space is formed in the lower end of the storage frame, the positioning assembly comprises a supporting block located on the side of the discharging opening, a first limiting block and a positioning block, and the supporting block moves to the discharging opening or is laterally away from the discharging opening under the action of a first driver; the first limiting block is far away from or close to the material storage space under the action of the second driver, and the positioning block is close to the material storage space and extends into the pipe to be machined or far away from the material storage space under the action of the third driver. The punching device has the advantages that the production efficiency can be improved, and the punching machining precision is guaranteed.

Description

Technical Field

[0001] The invention relates to an automatic U-shaped tube punching machine and a U-shaped tube punching processing method. Background Art

[0002] In order to improve the punching processing accuracy of pipe fittings and improve the production efficiency of punching processing, a Chinese patent with application number 202010383098.9 discloses a loading and unloading device of an automatic punching device for pipe fittings, including a workbench, a stamping mechanism, a waste discharge mechanism, a clamping and pushing mechanism, including a clamping seat assembly and a pushing drive for driving the clamping seat to reciprocate between the processing area and the loading and unloading area of ​​the workbench. The clamping seat assembly includes a first positioning seat and a second positioning seat arranged at intervals in the front and rear directions of the workbench. The first positioning seat is provided with a first through hole that penetrates front and back and is coaxially arranged with the pipe fitting clamped between the first positioning seat and the second positioning seat, so that the corresponding mandrel cantilevered in the processing area of ​​the workbench can pass through the first through hole and extend into the corresponding pipe fitting, and when pushing the waste, the first through hole is sleeved on the mandrel to limit the free end of the mandrel.

[0003] The above scheme has the following defects: the mechanical structure is complex, including multiple mechanisms, which leads to a long debugging time before production and a long pause time of each mechanism during production. The workpiece bracket needs to be lifted, and then the pipe to be processed needs to be moved by the loading clamp. After the processing is completed, the processed pipe needs to be pushed by the withdrawal block, resulting in a long total time for loading, punching and unloading each pipe, and the production efficiency is still low. Summary of the invention

[0004] The purpose of the invention is to provide a U-shaped tube automatic punching machine which can improve production efficiency and ensure punching processing accuracy.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic U-shaped tube punching machine, comprising a punching component and a storage component, the storage component comprising a storage frame for limiting the translation of the stored tubes to be processed, the storage frame constituting a storage space, a positioning component and the punching component are arranged on the side of the storage space, the lower end of the storage frame constituting a discharge port connected to the storage space, the positioning component comprising a support block, a first limit block and a positioning block located on the discharge port side, the support block moves to the discharge port or laterally away from the discharge port under the action of a first driver, the first limit block moves away from or approaches the storage space under the action of a second driver, and the positioning block approaches the storage space under the action of a third driver and extends into the tube to be processed or away from the storage space.

[0006] The present invention arranges a material storage frame on the side of the punching assembly, and directly punches the tube to be processed on the material storage frame through the punch of the punching assembly. There is no need to adopt a loading mechanism and an unloading mechanism to load and unload the U-shaped tube, which can reduce the pause time of the loading and unloading steps of the U-shaped tube processing, so that the process step of punching and the process step of loading the next tube to be processed can be more continuous, thereby further shortening the punching processing time, so as to improve the punching processing production efficiency of the U-shaped tube.

[0007] The present invention adopts a material storage frame to store the pipes to be processed, and through the coordinated action of components such as support blocks and limit blocks, the continuous automatic feeding and processing of U-shaped tubes is realized, and the frequent clamping and loading and unloading of U-shaped tubes are avoided, so that the production process is smoother and the production efficiency is improved. There is no need to set up mechanisms such as manipulator clamps to transfer U-shaped tubes, the production cost is lower, and the entire device occupies less space. Among them, in order to facilitate the smooth drop of the U-shaped tube, the storage space of the material storage frame is wider than the diameter of the U-shaped tube, and the device of the present invention is used for punching U-shaped tubes, which has higher positioning position accuracy requirements than the processing of conventional straight tubes. The present invention enables the end of the positioning block to extend into the interior of the U-shaped tube for positioning, and the first limit block can contact and limit laterally, thereby enhancing the positioning stability and reliability of the U-shaped tube, further improving the positioning accuracy of the U-shaped tube located at the material storage frame, avoiding processing errors caused by inaccurate positioning, and improving the accuracy and efficiency of punching.

[0008] Preferably, a second limit block is provided on the side of the material storage space and is matched with a fourth driver, and a clearance space for the tube to be processed is formed between the second limit block and the punching assembly.

[0009] By setting the second limit block, the movement range of the tube to be processed can be further limited to ensure that the U-shaped tube maintains a stable position during the processing, avoiding the impact of the punching accuracy and efficiency due to shaking or deviation of the U-shaped tube.

[0010] Preferably, the fourth driver and the punching assembly are both fixed to the output end of the third driver.

[0011] Fixing the fourth driver and the punching assembly at the output end of the same driver can realize the synchronous movement and coordinated control of multiple components, simplify the complexity of the control system, improve the stability and reliability of the equipment, and thus improve production efficiency. At the same time, the punch stroke of the punching assembly can be made shorter and the punch shorter without moving interference, so as to further improve the processing accuracy and shorten the processing time.

[0012] Preferably, the output end of the third driver is provided with a movable plate, the fourth driver and the punching assembly are both fixed on the movable plate, the movable plate is provided with a guide plate extending upward, the guide plate is provided with a guide hole penetrating and guiding the punch between the punching assemblies. By providing the guide plate to guide the punch, the punch with a certain length is prevented from tilting, so as to further improve the processing accuracy.

[0013] Preferably, the side surface of the second limiting block is provided with an arc-shaped positioning groove penetrating through two opposite sides of the second limiting block.

[0014] The design of the arc-shaped positioning groove of the second limit block can better adapt to the arc-shaped structure of the outer wall of the U-shaped tube, provide a more stable and reliable positioning effect, ensure that the U-shaped tube will not shift or shake during the processing, improve the processing stability and accuracy, and thus improve production efficiency.

[0015] Preferably, the positioning block includes a block body and a pin arranged on the block body and used to extend into the tube to be processed. The material storage frame has a positioning frame on the side away from the positioning block. When the pin extends into the tube to be processed, the tube to be processed is confined between the block body and the positioning frame.

[0016] By setting the block and the positioning frame, the two work in coordination with each other to form a double positioning of the U-shaped tube, further restricting the movement and deviation of the U-shaped tube, ensuring that the U-shaped tube maintains a stable position during the processing, and improving the processing accuracy and efficiency.

[0017] Preferably, the side wall of the first limiting block is provided with a plurality of arc-shaped positioning grooves which are continuous in the upper and lower directions, and the arc-shaped positioning grooves pass through two opposite sides of the first limiting block.

[0018] The design of multiple arc-shaped positioning grooves of the first limit block can better adapt to the U-shaped tubes stacked up and down, provide a more reliable positioning effect, ensure that the U-shaped tube on the upper side maintains a stable position during the processing, and reduce the negative impact on the U-shaped tube on the lower side that is undergoing punching processing.

[0019] Preferably, the edge of the support block has a guide surface inclined from bottom to top, and the upper end of the guide surface is connected to the upper end support surface of the support block.

[0020] When the support block moves away from the discharge port of the material storage frame, the U-shaped tube that has completed the punching process and is located at the lower side will move from the upper support surface of the support block to the guide surface. During this process, the U-shaped tube that has completed the punching process will gradually move downward. After the support block is completely moved away from the lower side of the material storage space, the translation tendency force of the U-shaped tube that has completed the punching process due to the influence of inertia can be reduced, thereby ensuring the normal fall of the U-shaped tube that has completed the punching process and falling to the specified position.

[0021] The present invention also discloses a U-shaped tube punching processing method using the above-mentioned U-shaped tube automatic punching machine, comprising the following steps: S1. The stacked tubes to be processed are placed in the storage space of the storage frame, and the tubes to be processed are supported by the support block in the storage space; S2. The end of the positioning block extends into the tube to be processed at the bottom under the action of the third driver; S3. The first stopper moves under the action of the second driver and contacts the side of the tube to be processed in the storage space, and contacts the second tube to be processed from the bottom of the stacked tubes to be processed; S4. Punching the tube to be processed at the bottom by punching the punching assembly; S5. The support block is laterally moved away from the discharge port under the action of the first driver, and the positioning block is moved away from the storage space under the action of the third driver so that the U-shaped tube located at the lower side falls downward; S6. The support block is reset and moved to below the stacked tube to be processed under the action of the first drive; S7. The first limit block is moved away from the storage space under the action of the second driver, so that the stacked tubes to be processed fall downward and are supported on the upper side of the support block; S8. Repeat steps S2 to S7 to complete punching of all the tubes to be processed in the storage space.

[0022] The invention has the advantages of improving production efficiency and ensuring punching processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the U-shaped tube automatic punching machine of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the U-shaped tube automatic punching machine of the present invention when the U-shaped tube that has completed the punching process falls.

[0025] Figure 3 The present invention is a schematic structural diagram of a punching assembly and a positioning assembly of the automatic punching machine for U-shaped tubes. DETAILED DESCRIPTION

[0026] The present invention will be further described below based on the accompanying drawings and specific embodiments.

[0027] Depend on Figures 1 to 3As shown, this embodiment discloses a U-shaped tube automatic punching machine, including a punching assembly, a positioning assembly and a material storage assembly. The material storage assembly includes a fixed plate 11 and a material storage frame composed of a plurality of positioning frames 12 extending upwards arranged on the fixed plate 11. The upper and lower sides of the material storage frame are respectively provided with a feed port and a discharge port. A plurality of positioning frames 12 form a material storage space for accommodating a U-shaped tube 100 to be processed. The punching assembly and the positioning assembly are both located on the upper side of the fixed plate 11. The fixed plate 11 is provided with a U-shaped discharge trough 13 that passes through from top to bottom and corresponds to the discharge port. The fixed plate 11 of this embodiment is composed of two fixed plate monomers 111 that are symmetrically arranged on the left and right.

[0028] The punching assembly and the positioning assembly are both located on the side of the positioning frame 12. In this embodiment, the two ends and the corners of the U-shaped tube need to be punched. The left and right parts of the storage space formed by the storage frame are both provided with punching assemblies and positioning assemblies. The punching assembly includes a first punching driver 21 and a second punching driver 22. The output ends of the first punching driver 21 and the second punching driver 22 are both provided with punches. The first punching driver 21, the second punching driver 22 and the punch of this embodiment can adopt any existing punching device parts for pipe punching processing.

[0029] The positioning assembly includes a support block 31, a first limit block 41, a second limit block 51, and a positioning block 61. The support block 31 is translated to the discharge port or laterally away from the discharge port under the action of the first driver 32. The first limit block 41 is away from or close to the storage space under the action of the second driver 42. The positioning block 61 is close to the storage space and extends into the tube to be processed or away from the storage space under the action of the third driver 62. A clearance space for making way for the tube to be processed 100 is formed between the second limit block 51 and the first punching driver 21 of the punching assembly. The second limit block 51 is close to or away from the storage space under the action of the fourth driver 52.

[0030] The side wall of the second stop block 51 is provided with a clearance hole for the punch of the first punching driver 21. The side walls of the second stop block 51 and the first stop block 41 are both provided with arc-shaped positioning grooves 50 that penetrate from front to back. The side wall of the first stop block 41 is provided with three arc-shaped positioning grooves that are continuous up and down. The side wall of the second stop block 51 is provided with an arc-shaped positioning groove that is specifically used to position the tube 100 to be processed at the bottom. The edge of the support block 31 has a guide surface 311 that is inclined from bottom to top, and the upper end of the guide surface 311 is connected to the upper end support surface of the support block 31.

[0031] Depend on Figure 1 and Figure 3As shown, the output end of the third driver 62 is provided with a movable plate 63, and the movable plate 63 is made on the fixed plate 11 through a slide rail assembly 631, and the positioning block 61, the fourth driver 52, and the first punching driver 21 are all arranged on the movable plate 63. The movable plate 63 of this embodiment is also provided with a guide plate 64 extending upward, and the guide plate 64 is provided with a guide hole that penetrates left and right and guides the punch of the first punching driver 21. The punch of the first punching driver 21 is always located in the guide hole of the guide plate 64, and the guide hole of the guide plate 64, the clearance hole of the second limit block 51 and the punch of the first punching driver 21 are coaxial. Among them, since it is necessary to process a through hole on the tube 100 to be processed in this embodiment, the pin 602 of this embodiment is provided with a matching hole corresponding to the clearance hole and the guide hole.

[0032] Depend on Figure 3 As shown, the positioning block 60 includes a block body 601 fixed on a movable plate 63 and a pin 602 arranged on the block body 601 and used to extend into the tube 100 to be processed. When the pin 602 extends into the tube to be processed at the bottom of the stack, the tube end face of the tube to be processed contacts the block body 601, and the tube to be processed is confined between the block body 601 and the positioning frame located at the rear side of the storage frame.

[0033] This embodiment also discloses a U-shaped tube punching processing method using the above-mentioned U-shaped tube automatic punching machine, comprising the following steps: S1. The stacked tubes 100 to be processed are placed in the storage space of the storage frame, and the tubes 100 to be processed are supported by the support block 31 in the storage space; S2. Start the third driver 62, the pin 602 at the end of the positioning block 60 extends into the tube to be processed at the lowermost side, the block 601 of the positioning block 60 contacts the tube end surface of the tube to be processed at the lowermost side, and pushes the tube to be processed at the lowermost side to contact the positioning frame 12 at the rear side of the storage frame; S3. Start the second driver 42, so that the first limit block 41 translates and contacts the second side of the tube to be processed located upward in the storage space; S4. Start the first punching driver 21, the second punching driver 22 and the fourth driver, so that the end of the tube to be processed at the bottom is restricted to the side of the second limit block 51, and complete the punching of the tube to be processed at the bottom; S5. The positioning block 60 is moved away from the storage space under the action of the third driver, and then the support block 31 is moved laterally under the action of the first driver 32 to move away from the discharge port, and the U-shaped tube located at the bottom of the punching process has been completed and falls downward under its own weight; S6. The support block 31 is reset and moved to below the stacked tube to be processed under the action of the first driver 32; S7. The first limit block 41 is away from the storage space under the action of the second driver 42, so that the stacked tubes to be processed fall downward and are supported on the upper side of the support block 31; S8. Repeat steps S2 to S7 in sequence to complete punching of all the tubes to be processed in the storage space.

Claims

1. A U-shaped tube automatic punching machine, comprising a punching assembly and a material storage assembly, characterized in that: The material storage component includes a material storage frame for limiting the translation of the stored tubes to be processed, the material storage frame constitutes a material storage space, a positioning component and the punching component are provided on the side of the material storage space, the lower end of the material storage frame constitutes a discharge port connected to the material storage space, the positioning component includes a support block, a first limit block and a positioning block located on the discharge port side, the support block moves to the discharge port or laterally away from the discharge port under the action of a first driver, the first limit block moves away from or approaches the material storage space under the action of a second driver, and the positioning block approaches the material storage space and extends into the tube to be processed or away from the material storage space under the action of a third driver.

2. The U-shaped tube automatic punching machine according to claim 1, characterized in that: A second limiting block is arranged on the side of the material storage space and is matched with a fourth driver, and a clearance space for the pipe to be processed is formed between the second limiting block and the punching assembly.

3. The U-shaped tube automatic punching machine according to claim 2, characterized in that: The fourth driver and the punching assembly are both fixed to the output end of the third driver.

4. The U-shaped tube automatic punching machine according to claim 3 is characterized in that: The output end of the third driver is provided with a movable plate, the fourth driver and the punching assembly are both fixed on the movable plate, the movable plate is provided with a guide plate extending upward, and the guide plate is provided with a guide hole that penetrates and guides the punch between the punching assemblies.

5. The U-shaped tube automatic punching machine according to claim 2, characterized in that: The side surface of the second limiting block is provided with an arc-shaped positioning groove which passes through two opposite sides of the second limiting block.

6. The U-shaped tube automatic punching machine according to claim 1, characterized in that: The positioning block includes a block body and a pin arranged on the block body and used to extend into the tube to be processed. The material storage frame has a positioning frame on the side away from the positioning block. When the pin extends into the tube to be processed, the tube to be processed is confined between the block body and the positioning frame.

7. The U-shaped tube automatic punching machine according to claim 1, characterized in that: The side wall of the first limiting block is provided with a plurality of arc-shaped positioning grooves which are continuous up and down, and the arc-shaped positioning grooves pass through two opposite sides of the first limiting block.

8. The U-shaped tube automatic punching machine according to claim 1, characterized in that: The edge of the support block has a guide surface inclined from bottom to top, and the upper end of the guide surface is connected to the upper end support surface of the support block.

9. A U-shaped tube punching method using the U-shaped tube automatic punching machine according to claims 1 to 8, characterized in that The steps include: S1. The stacked tubes to be processed are placed in the storage space of the storage frame, and the tubes to be processed are supported by the support block in the storage space; S2. The end of the positioning block extends into the tube to be processed at the bottom under the action of the third driver; S3. The first stopper moves under the action of the second driver and contacts the side of the tube to be processed in the storage space, and contacts the second tube to be processed from the bottom of the stacked tubes to be processed; S4. Punching the tube to be processed at the bottom by punching the punching assembly; S5. The support block is laterally moved away from the discharge port under the action of the first driver, and the positioning block is moved away from the storage space under the action of the third driver so that the U-shaped tube located at the lower side falls downward; S6. The support block is reset and moved to below the stacked tube to be processed under the action of the first drive; S7. The first limit block is moved away from the storage space under the action of the second driver, so that the stacked tubes to be processed fall downward and are supported on the upper side of the support block; S8. Repeat steps S2 to S7 to complete punching of all the tubes to be processed in the storage space.

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