Automatic valve rod feeding and discharging device

Abstract

The utility model belongs to the field of valve rod machining, and provides an automatic valve rod feeding and discharging device which comprises a machine table, a feeding frame, a machining table and a discharging frame are sequentially arranged on the machine table from front to back, and a pair of supporting frames and a clamping mechanism are arranged on the front portion and the rear portion of the machining table respectively. A feeding mechanism and a discharging mechanism are arranged between the feeding frame and the machining table and between the discharging frame and the machining table respectively, the clamping mechanism comprises a pair of bottom frames installed on the machining table, and a pair of limiting blocks and a bearing seat are arranged inside and outside each bottom frame respectively. A certain number of valve rods are placed in the feeding frame, the feeding mechanism transfers the current valve rod which is located in the feeding frame and located on the lowest portion to the pair of supporting frames, after the discharging mechanism moves forwards by one station, the front end and the rear end of the discharging mechanism support the current valve rod respectively, and after the previous valve rod on the clamping mechanism moves backwards by one station, the current valve rod is clamped by the clamping mechanism. And the current valve rod is transferred to the clamping mechanism, and the previous valve rod is transferred into the discharging frame for discharging.

Description

Technical Field

[0001] The utility model belongs to the field of valve stem processing, in particular to an automatic loading and unloading device for a valve stem. Background Art

[0002] As a key valve component, the valve stem's machining quality and efficiency directly impact the valve's overall performance and production costs. Valves are widely used in industries such as petroleum, chemical, metallurgy, and electric power, placing stringent requirements on their machining accuracy and surface quality.

[0003] During the machining process, valve stems are often loaded and unloaded one by one using loading and unloading devices to a processing unit for processing. Once the valve stems are processed, they are unloaded. However, existing loading and unloading devices struggle to simultaneously load the valve stems to be processed and unload the processed stems, resulting in low efficiency throughout the loading and unloading process. Furthermore, while existing clamping mechanisms can clamp the valve stems, the clamping process can easily damage the stem surface. Utility Model Content

[0004] In view of the above problems, the purpose of the present invention is to provide an automatic loading and unloading device for valve stems, aiming to solve the problem that the loading and unloading process of the existing automatic loading and unloading device for valve stems is low in efficiency and the clamping process easily damages the valve stem surface.

[0005] The utility model adopts the following technical solutions:

[0006] The automatic loading and unloading device for the valve stem includes a machine table, which is sequentially provided with a loading rack, a processing table, and a unloading rack from front to back, and a pair of support racks and a clamping mechanism are respectively provided at the front and rear of the processing table, and a loading mechanism and an unloading mechanism are respectively provided between the loading rack and the unloading rack and the processing table, and the clamping mechanism includes a pair of base frames installed on the processing table, and a pair of limit blocks and a receiving seat are respectively provided inside and outside the base frames, wherein the limit blocks are fixedly installed and the receiving seat is slidably installed, and the middle part of the receiving seat is recessed downward to form an arc-shaped receiving groove, and a pair of fixing rods are provided at the tail end of the receiving seat, and a T-shaped clamping block is inserted into the fixing rods together, and the lower part of the clamping block is located in the receiving groove, and a spring is provided on the fixing rod between the clamping block and the receiving seat, and a clamping cylinder is provided on the processing table, and the driving shaft of the clamping cylinder is connected to the receiving seat.

[0007] Furthermore, a guide groove is provided on the outer side of the limit block, and a pair of guide rods are provided on the clamping block, and the guide rods are located in the guide groove on the same side.

[0008] Furthermore, the loading mechanism includes a loading plate slidably mounted on the machine platform, a pair of upper and lower cylinders are provided on the loading plate, a V-shaped loading block is provided on the driving shaft of the upper and lower cylinders, and a loading cylinder for driving the loading plate to slide is also provided on the machine platform.

[0009] Furthermore, the blanking mechanism includes a blanking plate slidably mounted on the machine platform, a pair of lifting cylinders are provided in front and behind the blanking plate, the driving shaft of the lifting cylinder is provided with a V-shaped blanking block, and the machine platform is also provided with a blanking cylinder for driving the blanking plate to slide.

[0010] Furthermore, a pair of avoidance openings are opened at the bottom of the loading rack and the top of the unloading rack, a baffle is also provided in the loading rack, a pushing cylinder is provided on the machine platform, and a pushing frame is provided on the driving shaft of the pushing cylinder. The two ends of the pushing frame are respectively arranged above and below the corresponding avoidance openings, and the pushing frame is located in front of the baffle and is arranged adjacent to the baffle.

[0011] The beneficial effect of the present invention is that when valve stems need to be processed in batches, a certain number of valve stems are placed in the loading rack as required, and the loading mechanism transfers the current valve stem located at the bottom of the loading rack to the pair of support racks. After the unloading mechanism moves forward one station, the front and rear ends of the unloading mechanism respectively support the current valve stem and the previous valve stem on the clamping mechanism and move backward one station. After that, the current valve stem is transferred to the clamping mechanism, and the previous valve stem is transferred to the unloading rack for unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an overall diagram of a valve stem automatic loading and unloading device provided by the utility model.

[0013] Figure 2 This utility model provides Figure 1 Enlarged view of point A in the middle.

[0014] Figure 3 This utility model provides a schematic diagram of the installation of the clamping block.

[0015] Figure 4 The utility model provides a schematic diagram of a feeding mechanism. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not intended to limit the utility model.

[0017] In order to illustrate the technical solution of the present invention, specific embodiments are provided below.

[0018] For the sake of convenience, only the parts related to the embodiments of the present invention are shown.

[0019] Combine Figure 1-4As shown, the automatic loading and unloading device for the valve stem includes a machine 1, and the machine 1 is provided with a loading rack 2, a processing table 3, and a unloading rack 4 from front to back. A pair of support frames 5 are provided in front and back of the processing table 3, and a clamping mechanism. A loading mechanism and an unloading mechanism are provided between the loading rack 2 and the unloading rack 4 and the processing table 3 respectively. The clamping mechanism includes a pair of base frames 6 installed on the processing table 3, and a pair of limit blocks 7 and a receiving seat 8 are provided inside and outside the base frame 6, wherein the limit blocks 7 are provided. Fixed installation, the receiving seat 8 is slidably installed, the middle part of the receiving seat 8 is recessed downward to form an arc-shaped receiving groove 9, and a pair of fixing rods 10 are provided at the tail of the receiving seat 8. A T-shaped clamping block 11 is inserted into the fixing rods 10, and the lower part of the clamping block 11 is located in the receiving groove 9. A spring 12 is provided on the fixing rod 10 between the clamping block 11 and the receiving seat 8, and a clamping cylinder 13 is provided on the processing table 3. The driving shaft of the clamping cylinder 13 is connected to the receiving seat 8.

[0020] As a key valve component, the valve stem's machining quality and efficiency directly impact the valve's overall performance and production costs. Valve stems are widely used, placing stringent demands on machining accuracy and surface quality. This automatic loading and unloading device can be used to facilitate the loading and unloading of valve stems during machining.

[0021] When batch processing of valve stems is required, a certain number of valve stems are placed in the loading rack as required. First, the loading mechanism transfers the current valve stem, located at the bottom of the loading rack, to the pair of support racks to await loading, and then resets. Simultaneously, the unloading mechanism moves forward one station, with its front and rear ends supporting the current valve stem. After clamping the previous valve stem on the unloading mechanism, it moves backward one station. The current valve stem is then transferred to the clamping mechanism, and the previous valve stem is transferred to the unloading rack for unloading.

[0022] After the valve stem is transferred to the clamping mechanism, the two ends of the valve stem fall into the receiving grooves on the same side. The clamping cylinder drives the receiving seat to move toward the valve stem until the two clamping blocks clamp the valve stem. Finally, the processing mechanism can process the valve stem. Since the processing mechanism is not the focus of this device, it will not be described here.

[0023] As a preferred structure, Figure 2-3 A guide groove (obstructed in the figure) is provided on the outer side of the limit block 7, and a pair of guide rods 14 are provided on the clamping block 11, and the guide rods 14 are located in the guide groove on the same side.

[0024] When the driving cylinder drives the receiving seat to move toward the valve stem, the lower part of the clamping block first contacts the end of the valve stem. The driving cylinder continues to drive the receiving seat to move. Under the pressure of the clamping block, the spring is compressed. When the spring is fully compressed, the two ends of the valve stem are firmly clamped by the clamping block without damaging the surface of the valve stem. When the clamping block moves, the guide rod slides in the guide groove. In this way, when clamping the valve stem, the guide rod plays a guiding and limiting role, making the clamping block more stable during the clamping movement.

[0025] In this structure, when the end of the valve stem is located in the receiving groove, the limit blocks are located on both sides of the end of the valve stem, and the limit blocks play a role in further limiting the valve stem.

[0026] Further as a preferred structure, Figure 4 A pair of avoidance openings 15 are provided at the bottom of the loading rack 2 and the top of the unloading rack. A baffle 16 is also provided in the loading rack 2. A pushing cylinder 17 is provided on the machine 1. The driving shaft of the pushing cylinder 17 is provided with a pushing frame 18. The two ends of the pushing frame 18 are respectively arranged above and below the corresponding avoidance openings 15, and the pushing frame 18 is located in front of the baffle 16 and is adjacent to the baffle.

[0027] In this structure, the area within the loading rack in front of the baffle constitutes the discharge area, while the area within the loading rack behind the baffle constitutes the loading area. In practice, a certain number of valve stems are stacked in the discharge area. Before loading, the loading mechanism's push cylinder drives the push rack upward. First, the two ends of the push rack pass through corresponding clearances, then push up the current valve stem located at the bottom of the discharge area. The current valve stem moves along the height of the baffle. Once in position, it drops from the push rack into the loading area to await loading.

[0028] In this structure, the loading mechanism includes a loading plate 19 slidably mounted on the machine 1, a pair of upper and lower cylinders 20 are provided on the loading plate 19, and a V-shaped loading block 21 is provided on the driving shaft of the upper and lower cylinders 20. The machine 1 is also provided with a loading cylinder 22 for driving the loading plate 19 to slide.

[0029] After the current valve stem falls into the loading area, the loading block is located directly below the current valve stem. First, the upper and lower cylinders drive the loading block upward, passing through the corresponding avoidance openings. The two loading blocks support the ends of the current valve stem. The upper and lower cylinders continue to drive the loading block upward until the current valve stem is higher than the bottom of the loading rack. The loading cylinder drives the loading plate backward one station, and the support rack is now directly below the current valve stem. Finally, the upper and lower cylinders drive the loading block downward until the current valve stem falls onto the two support racks.

[0030] The blanking mechanism includes a blanking plate 23 slidably mounted on the machine 4, and a pair of lifting cylinders 24 are provided in front and behind the blanking plate 23. The driving shaft of the lifting cylinder 24 is provided with a V-shaped blanking block 25. The machine 1 is also provided with a blanking cylinder 26 for driving the blanking plate 23 to slide.

[0031] After the machining mechanism completes processing the previous valve stem, the blanking cylinder drives the blanking plate forward one position. The first pair of blanking blocks is now directly below the current valve stem, and the second pair is directly below the previous valve stem. All the lifting cylinders then simultaneously drive the corresponding blanking blocks upward a short distance. The first pair of blanking blocks now lifts the current valve stem, while the second pair lifts the previous valve stem, with the current valve stem above the clamping mechanism. The blanking plate then moves backward one position. The two ends of the current valve stem are now directly above the receiving groove on the same side, and the previous valve stem is directly above the blanking rack.

[0032] Finally, all the lifting cylinders simultaneously drive the corresponding unloading blocks downward. After moving into position, the two ends of the current valve stem fall into the receiving grooves on the same side, and the previous valve stem falls onto the unloading rack for unloading. This shows that the entire loading and unloading process of the valve stem is relatively continuous. Using this unloading and unloading device, the valve stems are loaded and unloaded one by one and in an orderly manner, and the entire loading and unloading efficiency is high.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A valve stem automatic loading and unloading device, characterized by: The automatic loading and unloading device for the valve stem includes a machine table, which is sequentially provided with a loading rack, a processing table, and a unloading rack from front to back, and a pair of support racks and a clamping mechanism are respectively provided at the front and rear of the processing table, and a loading mechanism and an unloading mechanism are respectively provided between the loading rack and the unloading rack and the processing table, and the clamping mechanism includes a pair of base frames installed on the processing table, and a pair of limit blocks and a receiving seat are respectively provided inside and outside the base frames, wherein the limit blocks are fixedly installed and the receiving seat is slidably installed, and the middle part of the receiving seat is recessed downward to form an arc-shaped receiving groove, and a pair of fixing rods are provided at the tail end of the receiving seat, and a T-shaped clamping block is inserted into the fixing rods together, and the lower part of the clamping block is located in the receiving groove, and a spring is provided on the fixing rod between the clamping block and the receiving seat, and a clamping cylinder is provided on the processing table, and the driving shaft of the clamping cylinder is connected to the receiving seat.

2. The automatic valve stem loading and unloading device according to claim 1, characterized in that: A guide groove is formed on the outer side of the limit block, and a pair of guide rods are provided on the clamping block. The guide rods are located in the guide groove on the same side.

3. The automatic valve stem loading and unloading device according to claim 2, characterized in that: The loading mechanism includes a loading plate slidably mounted on the machine platform, a pair of upper and lower cylinders are provided on the loading plate, a V-shaped loading block is provided on the driving shaft of the upper and lower cylinders, and a loading cylinder for driving the loading plate to slide is also provided on the machine platform.

4. The automatic valve stem loading and unloading device according to claim 3, characterized in that: The blanking mechanism includes a blanking plate slidably mounted on the machine platform, a pair of lifting cylinders are provided in front and behind the blanking plate, the driving shaft of the lifting cylinder is provided with a V-shaped blanking block, and the machine platform is also provided with a blanking cylinder for driving the blanking plate to slide.

5. The automatic valve stem loading and unloading device according to claim 4, characterized in that: A pair of avoidance openings are provided at the bottom of the loading rack and the top of the unloading rack. A baffle is also provided inside the loading rack. A pushing cylinder is provided on the machine platform. A pushing frame is provided on the driving shaft of the pushing cylinder. Both ends of the pushing frame are respectively arranged above and below the corresponding avoidance openings, and the pushing frame is located in front of the baffle and adjacent to the baffle.

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