Feeding and discharging device for valve tappet grinding rod

Abstract

The utility model belongs to the technical field of valve tappet machining equipment, and particularly relates to a feeding and discharging device for valve tappet grinding rods, which comprises a frame, a feeding mechanism, a clamping mechanism and a discharging mechanism are arranged on the frame, the feeding mechanism is arranged at one end of the frame, and the discharging mechanism is arranged at the other end of the frame; the feeding mechanism comprises a supporting frame fixedly connected to the rack, a material frame is obliquely arranged on one side of the supporting frame, a limiting rod is arranged at the bottom end of the material frame in a sliding mode and connected with a double-shaft air cylinder, and a turnover assembly is arranged at the bottom of the supporting frame. According to the feeding and discharging device for the valve tappet grinding rod, automatic feeding and discharging are achieved, the overall structure is simple, the labor intensity of production personnel is greatly reduced, time and labor are saved, safety is high, cost is low, and practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of valve tappet processing equipment, and in particular relates to a loading and unloading device for a valve tappet grinding rod. Background Art

[0002] The valve tappet is one of the important parts in the engine. The function of the valve tappet is to transmit the thrust of the camshaft to the push rod (or valve stem) and bear the lateral force applied by the camshaft when it rotates. The tappet is equipped with an adjustment screw at its top to adjust the valve clearance. In the past, the valve stem was polished manually using a lathe grinding wheel. The labor intensity of the workers was high, the production efficiency was low, the polishing effect was poor, the scrap rate was high, and it was completely unable to adapt to the development of modern valve production. In order to improve the surface roughness of the valve stem, the industry has made a lot of efforts and adopted different equipment and processes to solve it.

[0003] The utility model patent with publication number CN201579684U proposes a valve stem sanding belt polishing device, which includes an automatic loading and unloading mechanism, a sanding belt polishing mechanism, a sanding belt tensioning mechanism, an automatic feeding mechanism, a material receiving mechanism, an electrical control system and a hydraulic control system. The polishing device realizes the automatic loading and unloading, automatic feeding and automatic polishing operations in the valve polishing process, reduces the labor intensity of operators and the product scrap rate, and greatly improves the production cycle and the polishing surface quality of the valve stem.

[0004] However, the loading and unloading mechanism in the patented technical solution has a relatively complex structure, resulting in high production and use costs. Therefore, it is necessary to design a loading and unloading device for the valve tappet grinding rod with a simple structure, low cost and strong practicality. Utility Model Content

[0005] The utility model aims to provide a loading and unloading device for a valve tappet grinding rod to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is:

[0007] A loading and unloading device for a valve tappet grinding rod comprises a frame, on which a loading mechanism, a clamping mechanism and a unloading mechanism are arranged, wherein the loading mechanism is arranged at one end of the frame, and the unloading mechanism is arranged at the other end of the frame;

[0008] The feeding mechanism comprises a support frame fixedly connected to the frame, a material frame is obliquely arranged on one side of the support frame, a limit rod is slidably arranged on the bottom end of the material frame, the limit rod is connected to a double-axis cylinder, and a flip assembly is arranged on one side of the lower part of the support frame;

[0009] The clamping mechanism includes a motor fixedly mounted on the frame, the output end of the motor is connected to a rotating seat, a second electric push rod and a bracket are fixedly mounted on the rotating seat, the bracket includes a support rod and a supporting seat, the supporting seat is located at an end away from the rotating seat, a supporting groove is provided on the supporting seat, a guide plate is provided on the middle fixed sleeve of the support rod, the output end of the second electric push rod slides through the guide plate, and a pressure block is fixedly connected to the output end of the second electric push rod.

[0010] As an improvement, the material rack includes two groups of feeding rods, a feeding channel is formed between the two groups of feeding rods, a support plate is provided above the two groups of feeding rods, both sides of the support plate are fixedly connected to the side surfaces of the two groups of feeding rods through connecting plates, each group of feeding rods includes two round rods inclined up and down, and one side wall of the support plate is fixedly connected to the support rack through a connecting plate.

[0011] As a further improvement, the flipping assembly includes a first electric push rod fixedly arranged on one side of the lower part of the support frame, the output end of the first electric push rod is hinged with a connecting rod, the bottom of the connecting rod is fixedly connected with a horizontally arranged rotating rod, the connecting rod is perpendicular to the rotating rod, a mounting block is fixedly provided on one side of the bottom of the support frame, the rotating rod passes through the mounting block and is rotatably connected to the mounting block, the end of the rotating rod away from the connecting rod is fixedly connected with a flipping rod, the flipping rod is perpendicular to the rotating rod, and a clamp is fixedly provided on the end of the flipping rod away from the rotating rod.

[0012] As a further improvement, the dual-axis cylinder is fixed to the top of the support plate, the limit rod is set to be L-shaped, the top end of the longitudinal rod of the limit rod is fixedly connected to the output end of the dual-axis cylinder, and the cross rod of the limit rod is slidably connected to the bottom end of the feeding channel.

[0013] As a further improvement, a support plate is provided at the other end of the frame, and the unloading mechanism includes a third electric push rod and a unloading channel. The output end position of the third electric push rod corresponds to the support plate, the top end of the unloading channel is located below the support plate, and the bottom end of the unloading channel is connected to a receiving box.

[0014] As a further improvement, a bracket is fixedly installed in the middle part of the unloading channel, a positioning plate is rotatably connected to the bracket, the lower part of the positioning plate is located in the unloading channel, a sensor is installed on the bracket, the sensor is electrically connected to the electric control box, and the electric control box is electrically connected to the motor, the clamp, the dual-axis cylinder, the first electric push rod, the second electric push rod and the third electric push rod.

[0015] As a further improvement, a supporting step is provided on one side of the supporting seat close to the pressing block, and the supporting step is arranged lower than the supporting groove.

[0016] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] The loading and unloading device for valve tappet grinding rod provided by the utility model moves the valve tappet in the loading channel to the clamping mechanism through the flipping assembly of the loading mechanism, and then the clamping mechanism transfers the valve tappet to the grinding mechanism for grinding. After grinding, it falls into the receiving box through the unloading mechanism. Sensors and electronic control boxes are set to control each process so that it can work continuously and realize automatic loading and unloading. The loading and unloading device of the utility model has a simple overall structure, which greatly reduces the labor intensity of production personnel, saves time and effort, has high safety, low cost and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the flip assembly of the utility model when flipping upward;

[0019] Figure 2 It is a schematic diagram of the structure of the turning assembly and the clamping mechanism of the utility model in cooperation with each other;

[0020] Figure 3 This is a schematic diagram of the structure of the utility model when feeding materials to the grinding mechanism;

[0021] Figure 4 It is the left view of the feeding mechanism;

[0022] Figure 5 It is the right side view of the grinding mechanism;

[0023] Figure 6 It is a structural schematic diagram of the positioning plate;

[0024] Figure 7 It is a structural schematic diagram of the supporting seat;

[0025] Wherein: 1-frame, 2-material rack, 3-feeding rod, 4-support plate, 5-connecting plate, 6-support frame, 7-turning assembly, 8-gripping claw, 9-first electric push rod, 10-connecting rod, 11-rotating rod, 12-mounting block, 13-turning rod, 14-dual-axis cylinder, 15-limiting rod, 16-motor, 17-rotating seat, 18-second electric push rod, 19-support rod, 20-supporting seat, 21-guide plate, 22-pressing block, 23-grinding wheel, 24-housing, 25-support plate, 26-third electric push rod, 27-unloading channel, 28-receiving box, 29-bracket, 30-positioning plate, 31-sensor, 32-feeding channel, 33-supporting groove, 34-supporting step. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the specific implementation methods and the accompanying drawings. The accompanying drawings are only for illustrative purposes and are only schematic diagrams, not actual drawings, and should not be construed as limiting the present application. In order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] like Figure 1-7 As shown, a loading and unloading device for a valve tappet grinding rod comprises a frame 1, on which a loading mechanism, a clamping mechanism and a unloading mechanism are provided. The loading mechanism is provided at one end of the frame, the unloading mechanism is provided at the other end of the frame, and a grinding mechanism is provided at an end close to the unloading mechanism.

[0029] The feeding mechanism includes an inclined material rack 2, the material rack 2 includes two groups of feeding rods 3, a feeding channel 32 is formed between the two groups of feeding rods 3, a support plate 4 is provided above the two groups of feeding rods 3, both sides of the support plate 4 are fixedly connected to the side surfaces of the two groups of feeding rods 3 by connecting plates 5, each group of feeding rods 3 includes two round rods inclined up and down, the operator places a plurality of valve tappets to be processed into the feeding channel 32 in sequence, the valve tappets can slide downward from the feeding channel 32 under the action of gravity, the bottom end of the feeding channel 32 extends into the limit rod 15, the limit rod 15 is retractable, the limit rod 15 has a blocking and limiting effect on the valve tappets on the material rack 2, and prevents the valve tappets from sliding off the material rack 2, so that the limit rod 15 opens or blocks the lower end of the feeding channel 32, so that the valve tappets can fall orderly from the feeding channel 32.

[0030] A support frame 6 is fixedly connected to the frame 1, and the support frame 6 is located on one side of the material frame 2. The bottom end of the support frame 6 is fixedly connected to the frame 1, and a side wall of the support plate 4 is fixedly connected to the support frame 6 through a connecting plate. A flip assembly 7 is fixedly connected to one side of the lower part of the support frame 6, and a clamping claw 8 is fixedly connected to the end of the flip assembly 7. The flip assembly 7 includes a first electric push rod 9 fixedly arranged on one side of the lower part of the support frame 6, and a connecting rod 10 is hinged at the output end of the first electric push rod 9. A horizontally arranged rotating rod 11 is fixedly connected to the bottom of the connecting rod 10, and the connecting rod 10 is perpendicular to the rotating rod 11. A mounting block 12 is fixedly arranged at the bottom of the support frame 6, and the rotating rod 11 passes through the mounting block 12 and is rotatably connected to the mounting block 12. The end of the rotating rod 11 is fixedly connected to a flip rod 13, and the flip rod 13 is perpendicular to the rotating rod 11. A clamping claw 8 is fixedly arranged at the end of the flip rod 13.

[0031] In this embodiment, the clamping jaw 8 is used to receive the valve tappet dropped from the feeding channel 32, and the clamping jaw 8 can be turned upward to the bottom of the material rack 2, or turned downward to a horizontal state. When the output end of the first electric push rod 9 is extended and retracted, the connecting rod 10 is driven to rotate, and then the rotating rod 11 is driven to rotate, thereby driving the flip rod 13 and the clamping jaw 8 to rotate.

[0032] Specifically, a double-axis cylinder 14 is provided at the top of the lower end of the support plate 4, and the output end of the double-axis cylinder 14 is connected to a limit rod 15. The limit rod 15 is set to be L-shaped, and the cross bar of the limit rod 15 can extend into the feeding channel 32 of the material rack 2 to block the valve tappet. The top of the longitudinal rod of the limit rod 15 is fixedly connected to the output end of the double-axis cylinder 14, and the limit rod 15 is driven by the double-axis cylinder 14 to move horizontally.

[0033] In this embodiment, when the clamping jaws 8 are flipped upward to the bottom of the material rack 2, a space that can accommodate a valve tappet is left between the clamping jaws 8 and the valve tappet at the bottom. At this time, the cross bar of the limiting rod 15 is pulled out from the material rack 2, so that the valve tappet at the bottom can fall to a position under the action of gravity and fall onto the clamping jaws 8. The clamping jaws 8 clamp the rod of the fallen valve tappet, and the valve tappet adjacent to it also falls to a position. At this time, the cross bar of the limiting rod 15 moves horizontally and extends into the material rack 2 to support the valve tappet above to prevent it from falling due to gravity. Then the flipping rod 13 drives the clamping jaws 8 to flip, and transfers the valve tappet from the material rack 2 to the clamping mechanism.

[0034] The clamping mechanism includes a motor 16 installed on the frame 1, and the output end of the motor 16 is connected to a rotating seat 17, and a second electric push rod 18 and a bracket are fixedly installed on the rotating seat 17. The bracket includes a support rod 19 and a supporting seat 20. The supporting seat 20 is located at an end away from the rotating seat 17. A supporting groove 33 is provided on the supporting seat 20. A guide plate 21 is fixedly sleeved in the middle of the support rod 19. The output end of the second electric push rod 18 slides through the guide plate 21. The output end of the second electric push rod 18 is fixedly connected to a pressure block 22, and the pressure block 22 cooperates with the supporting seat 20 to support the valve tappet.

[0035] Specifically, a supporting step 34 is provided on one side of the supporting seat 20 close to the pressing block 22, and the supporting step 34 is arranged lower than the supporting groove 33. When the valve tappet is placed in the supporting seat 20, the stem of the valve tappet is placed in the supporting groove 33, and the flat bottom end of the valve tappet is placed on the supporting step 34, and then the pressing block 22 presses the valve tappet tightly, so that the valve tappet is fixed more firmly.

[0036] When the clamping claw 8 of the feeding mechanism clamps the valve tappet and places it in the supporting groove 33 of the supporting seat 20, the rod of the valve tappet is close to the direction of the feeding mechanism, and the plane of the valve tappet is close to the direction of the clamping mechanism. Then, the plane of the valve tappet is pressed against the supporting seat 20 by the pressing block 22, and then the motor 16 drives the rotating seat 17 to rotate 180° to transfer the valve tappet to the grinding mechanism.

[0037] A support plate 25 is provided at one end of the frame 1 away from the feeding mechanism. The grinding mechanism includes two grinding wheels 23. A housing 24 is provided outside the grinding wheels 23 to protect the grinding wheels 23. A gap is left between the outer peripheral surfaces of the two grinding wheels 23. The support plate 25 is located below the gap between the two grinding wheels 23. The gap distance is smaller than the diameter of the valve tappet rod, so that the valve tappet rod will not fall after being placed between the two grinding wheels 23. When the valve tappet is placed in the gap, the plane of the valve tappet is located on the support plate 25 to play a supporting role. After the valve tappet is polished by the grinding wheel 23, the valve tappet is pushed off the two grinding wheels 23 by the unloading mechanism.

[0038] The unloading mechanism includes a third electric push rod 26, which is installed in the housing 24 at one end away from the grinding wheel 23, and the output end of the third electric push rod 26 corresponds to the rod of the valve tappet. A unloading channel 27 is fixedly provided at the lower part of the housing 24, and the top of the unloading channel 27 is located below the support plate 25, and the bottom of the unloading channel 27 is connected to a receiving box 28. After the valve tappet is polished, the third electric push rod 26 can push it off the grinding wheel 23 and the support plate 25, and then the valve tappet slides along the unloading channel 27 into the receiving box 28. A bracket 29 is fixedly installed in the middle of the unloading channel 27, and a positioning plate 30 is rotatably connected to the bracket 29. The lower part of the positioning plate 30 is located in the unloading channel 27. When the valve tappet slides down from the unloading channel 27, the valve tappet can collide with the positioning plate 30, causing the positioning plate 30 to swing. A sensor 31 is installed on the bracket 29, and the sensor 31 is electrically connected to the electric control box, and the electric control box is electrically connected to the motor 16, the clamp 8, the dual-axis cylinder 14, the first electric push rod 9, the second electric push rod 18 and the third electric push rod 26. When the valve tappet slides over the positioning plate 30, the swing of the positioning plate 30 triggers the sensor 31 signal, thereby making the motor 16, the clamp 8, the dual-axis cylinder 14, the first electric push rod 9, the second electric push rod 18 and the third electric push rod 26 work, thereby completing the loading, grinding and unloading of the valve tappet rod.

[0039] The working process of the utility model is as follows: the valve tappet to be processed is placed in the feeding channel 32 of the material rack 2, the flipping assembly 7 drives the clamping jaw 8 to flip upward to the bottom end of the material rack 2, the double-axis cylinder 14 drives the limiting rod 15 to contract, so that the valve tappet falls into the clamping jaw 8, and the clamping jaw 8 clamps the rod part of the valve tappet. At the same time, the double-axis cylinder 14 drives the limiting rod 15 to extend into the feeding channel 32 to prevent the valve tappet in the feeding channel 32 from falling. Then the flipping rod 13 drives the clamping jaw 8 to flip and transfer the valve tappet from the material rack 2 to the supporting seat 20 of the clamping assembly. The second electric push rod 18 drives the pressure block 22 to move. The pressure block 22 is against one side of the plane of the valve tappet, and the supporting seat 20 is against the other side of the plane. The pressure block 22 cooperates with the supporting seat 20 to press the valve tappet tightly, and then the flipping assembly 7 drives the clamping jaw 8 to flip upward to the bottom end of the material rack 2. After the valve tappet is clamped, the motor 16 drives the rotating seat 17 to turn 180 degrees, and the stem of the valve tappet is placed in the gap between the two grinding wheels 23, and the flat bottom of the valve tappet is placed on the support plate 25. Then the motor 16 rotates in the opposite direction to rotate the rotating seat 17 in the opposite direction. After the grinding is completed, the third electric push rod 26 pushes the valve tappet into the unloading channel 27, and finally falls into the receiving box 28.

[0040] The loading and unloading device for valve tappet grinding rod provided by the utility model moves the valve tappet in the loading channel to the clamping mechanism through the flipping assembly, and then the clamping mechanism transfers the valve tappet to the grinding mechanism for grinding. After grinding, it falls into the receiving box 28 through the unloading mechanism. The sensor 31 and the electric control box are set to control each process so that it can work continuously and realize automatic loading and unloading. The loading and unloading device of the utility model has a simple overall structure, which greatly reduces the labor intensity of production personnel, saves time and effort, has high safety, low cost and strong practicality.

[0041] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A loading and unloading device for a valve tappet grinding rod, comprising a frame, characterized in that: The frame is provided with a loading mechanism, a clamping mechanism and a unloading mechanism, the loading mechanism is arranged at one end of the frame, and the unloading mechanism is arranged at the other end of the frame; The feeding mechanism comprises a support frame fixedly connected to the frame, a material frame is obliquely arranged on one side of the support frame, a limit rod is slidably arranged on the bottom end of the material frame, the limit rod is connected to a double-axis cylinder, and a flip assembly is arranged on one side of the lower part of the support frame; The clamping mechanism includes a motor fixedly mounted on the frame, the output end of the motor is connected to a rotating seat, a second electric push rod and a bracket are fixedly mounted on the rotating seat, the bracket includes a support rod and a supporting seat, the supporting seat is located at an end away from the rotating seat, a supporting groove is provided on the supporting seat, a guide plate is provided on the middle fixed sleeve of the support rod, the output end of the second electric push rod slides through the guide plate, and a pressure block is fixedly connected to the output end of the second electric push rod.

2. The loading and unloading device for the valve tappet grinding rod according to claim 1, characterized in that: The material rack includes two groups of feeding rods, and a feeding channel is formed between the two groups of feeding rods. A support plate is provided above the two groups of feeding rods. Both sides of the support plate are fixedly connected to the side surfaces of the two groups of feeding rods through connecting plates. Each group of feeding rods includes two round rods inclined up and down, and one side wall of the support plate is fixedly connected to the support rack through a connecting plate.

3. The loading and unloading device for the valve tappet grinding rod according to claim 2, characterized in that: The flip assembly includes a first electric push rod fixedly arranged on one side of the lower part of the support frame, the output end of the first electric push rod is hinged with a connecting rod, the bottom of the connecting rod is fixedly connected with a horizontally arranged rotating rod, the connecting rod is perpendicular to the rotating rod, a mounting block is fixedly provided on one side of the bottom of the support frame, the rotating rod passes through the mounting block and is rotatably connected to the mounting block, an end of the rotating rod away from the connecting rod is fixedly connected with a flip rod, the flip rod is perpendicular to the rotating rod, and a clamp is fixedly provided on one end of the flip rod away from the rotating rod.

4. The loading and unloading device for the valve tappet grinding rod according to claim 3, characterized in that: The double-axis cylinder is fixed to the top of the support plate, the limit rod is set to be L-shaped, the top of the longitudinal rod of the limit rod is fixedly connected to the output end of the double-axis cylinder, and the cross rod of the limit rod is slidably connected to the bottom end of the feeding channel.

5. The loading and unloading device for the valve tappet grinding rod according to claim 4, characterized in that: A support plate is provided at the other end of the frame, and the unloading mechanism includes a third electric push rod and a unloading channel. The output end position of the third electric push rod corresponds to the support plate, the top end of the unloading channel is located below the support plate, and the bottom end of the unloading channel is connected to a receiving box.

6. The loading and unloading device for the valve tappet grinding rod according to claim 5, characterized in that: A bracket is fixedly installed in the middle of the unloading channel, and a positioning plate is rotatably connected to the bracket. The lower part of the positioning plate is located in the unloading channel. A sensor is installed on the bracket, and the sensor is electrically connected to the electric control box. The electric control box is electrically connected to the motor, the clamp, the dual-axis cylinder, the first electric push rod, the second electric push rod and the third electric push rod.

7. The loading and unloading device for the valve tappet grinding rod according to claim 1, characterized in that: A supporting step is provided on one side of the supporting seat close to the pressing block, and the supporting step is arranged lower than the supporting groove.

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