Material pushing device with adjustable material pushing length and material pushing method

Abstract

The invention relates to the technical field of metal processing, and provides a material pushing device with the adjustable material pushing length and a material pushing method.The material pushing device comprises a base and a supporting column, a supporting frame is installed at the top of the supporting column, a material guiding plate is fixedly installed at the top of the supporting frame, and a support is installed on the rear side of the top of the base; a conveying belt is rotationally installed in the support through a rotating shaft, a motor is installed on the back face of the support, and the motor is used for driving the conveying belt. According to the device, the right end of a workpiece can abut against the inclined face of the positioning block, the positioning block, the material pushing block, the first hydraulic rod and the fixing frame are automatically pushed to move rightwards till the left side of the material pushing block is flush with and abuts against the abutting end of the workpiece, and at the moment, the fixing frame, the first hydraulic rod, the material pushing block and the positioning block just complete automatic receding operation; and the distance between the workpiece and the feeding opening of the heating furnace is constant, the first hydraulic rod can push the material pushing block and the workpiece to push the workpiece at a time to complete feeding operation, and therefore the working efficiency of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, and in particular to a pushing device and a pushing method with adjustable pushing length. Background Art

[0002] A heating furnace is a common heat treatment equipment, which is mainly used to heat or preheat metal billets. In the prior art, the heating furnace uses medium-frequency electric heating to induction heat the metal billets entering the equipment. At this time, a pushing device is required to push the metal billets into the heating furnace; in the prior art, the columnar metal billets will pass through two transportation lines on the feeding side of the heating furnace (see https: / / v.qq.com / x / page / b3506e6v9dj.html), one is a conveyor belt, and the other is a power pushing mechanism based on a cylinder or a hydraulic cylinder. The two transport lines are parallel and connected to each other. The conveyor belt transports the metal billet to the bottom along the transport direction and moves to the pushing mechanism under the push of the cylinder. The cylinder in the pushing mechanism pushes the billet into the heating furnace. In this process, the cylinder has a fixed position and a fixed telescopic stroke, which will cause the pushing length to be unable to be automatically adjusted. When faced with metal billets of different lengths, the pushing length will be insufficient, and the billet of the specified length cannot be completely pushed into the heating furnace at one time, causing loading delays on the metal processing assembly line, reducing the working efficiency of the metal production line, which needs to be solved urgently. Summary of the invention

[0003] The present invention provides a material pushing device and a material pushing method with adjustable material pushing length, which solves the problem in the related art that the material pushing length cannot be automatically adjusted.

[0004] The technical scheme of the present invention is as follows: a pushing device with adjustable pushing length comprises a base and a pillar, the top of the pillar is installed with a supporting frame, the top of the supporting frame is fixedly installed with a guiding plate, the rear side of the top of the base is installed with a bracket, the interior of the bracket is rotatably installed with a conveyor belt through a rotating shaft, the back of the bracket is installed with a motor, and the motor is used to drive the conveyor belt, the top of the bracket is fixedly installed with a guide plate, the left side of the back of the bracket is installed with a hydraulic rod 2, the telescopic end of the hydraulic rod 2 is fixedly installed with a loading plate located on the left side above the conveyor belt, the back of the loading plate is fixedly connected with a connecting column 1, a connecting rod and a connecting column 2, the top of the guide plate is provided with a guide groove, the inner wall of the guide groove is slidably installed with a sliding block, the top of the sliding block is fixedly connected with a fixed frame and a hydraulic rod 1, the telescopic end of the hydraulic rod 1 is fixedly installed with a pushing block, the back of the pushing block is fixedly installed with a positioning block, a feeding plate is installed between the bracket and the guide plate, and the support The inner wall of the support frame is fixedly installed with a fixed column, and the sliding block is slidably installed on the surface of the fixed column, the front side of the support frame is movably sleeved with a limiting column, and the front and rear ends of the limiting column are fixedly connected to the limiting plate and the adapter plate in sequence, and the back side of the adapter plate is fixedly installed with an extrusion plate, and the extrusion plate is adapted to abut against the outer surface of the sliding block, and the outer surface of the limiting column is movably sleeved with a spring 2, and the two ends of the spring 2 are elastically connected to the support frame and the adapter plate respectively, and the back side of the support frame is fixedly connected with a guide cylinder that penetrates the inner wall of the bracket, and the inside of the guide cylinder is movably sleeved with an adapter column [WU1] and a spring 1, the front end of the adapter column is fixedly connected with a moving plate, and the front side of the moving plate is fixedly connected to the adapter plate, one end of the connecting column 2 is adapted to be inserted into the guide cylinder, and the two ends of the spring 1 are elastically connected to the adapter column and the connecting column 2 respectively, and the outer surface of the fixed column is movably sleeved with a spring 3, and the two ends of the spring 3 are elastically connected to the sliding block and the support frame respectively.

[0005] Preferably, the guide plate is located directly in front of the bracket, and the two sides of the feeding plate are fixedly connected to the left side of the front side of the bracket and the middle of the back side of the guide plate respectively, and workpieces are placed on the upper surfaces of the conveyor belt and the guide plate.

[0006] Preferably, the connecting column one is fixedly connected to the right side of the back side of the loading plate, the connecting rod is fixedly connected to the rear end of the connecting column one, the connecting column two is fixedly connected to the right side of the front side of the connecting rod, and the front end of the connecting column two is adapted to be inserted into the inner wall of the guide cylinder.

[0007] Preferably, the adapter plate has an arc surface with a diameter equal to that of the slider on one side thereof facing the slider, and the extrusion plate is adapted to be installed on the arc surface. The adapter plate and the extrusion plate are pressed forward by the second spring, and the extrusion plate abuts against the outer surface of the slider.

[0008] Preferably, the outer surfaces of the extrusion plate and the sliding block are both made of materials with a high friction coefficient, and the friction force generated by the contact between the extrusion plate and the sliding block is greater than the reaction force exerted on the workpiece by the hydraulic rod when it pushes the workpiece.

[0009] Preferably, the top-view cross-sectional shape of the positioning block is a right triangle, and the inclined surface of the positioning block faces the front side of the bracket.

[0010] Preferably, the high friction coefficient material is made of cast iron or steel or synthetic resin or ceramic material, and the upper side of the movable plate is in clearance fit with the inner wall of the guide groove.

[0011] Preferably, another group of arc surfaces is provided on the front side of the movable plate facing the outer surface of the slider, and a gap is left between the front side of the movable plate and the slider.

[0012] Preferably, a guide block is provided at the bottom of the pushing block, and the guide block is slidably installed in the guide groove. A rubber pad is glued to the front of the loading plate, and a plurality of grooves are provided on the surface of the rubber pad.

[0013] A material pushing method of a material pushing device with adjustable material pushing length comprises the following steps: S1. Connect the left side of the guide plate to the feed port of the heating furnace, adjust the position of the device, start the motor, and drive the conveyor belt to rotate, so that the workpiece falling on the surface of the conveyor belt moves horizontally from right to left along the feeding direction; S2. The workpiece moves to the leftmost side of the top of the conveyor belt under the drive of the conveyor belt and contacts the loading plate. At this time, the conveyor belt is stopped, the hydraulic rod 2 is started, and the loading plate, the connecting column 1, the connecting rod and the connecting column 2 are driven to move forward; S3. The connecting column 2 starts to move forward along the guide cylinder and continuously compresses the spring 1, transmitting the pressure to the adapter column, the movable plate and the adapter plate. At this time, the adapter plate starts to drive the extrusion plate to move forward and compress the spring 2; S4. Then, the pressure between the extrusion plate and the slider is reduced, the friction is reduced, the slider, the fixed frame, the hydraulic rod and the pusher block can move freely, and when the extrusion plate moves forward to the limit, the connecting column 2 still continues to compress the spring 1 and moves forward; S5. Then, the workpiece is pushed forward by the loading plate and the rubber pad, and enters the upper surface of the guide plate through the feeding plate. When the workpiece enters the surface of the guide plate, its right end abuts against the inclined surface of the positioning block, and generates a rightward thrust on the positioning block, the pusher block, the hydraulic rod and the fixed frame as a whole, until the right end of the workpiece is flush with the left side of the pusher block, and the pusher block and the positioning block no longer move to the right; S6. Then, the hydraulic rod 2 drives the loading plate and the connecting column 2 to reset. At this time, the connecting column 2 retracts, so that the pressure on the spring 1 is gradually reduced, and the pressure of the moving plate on the adapter plate is reduced. The adapter plate and the extrusion plate are re-contacted with the slider under the elastic force of the spring 2, and friction is generated. At this time, the slider and the fixed frame are in a fixed state; S7. Finally, start the hydraulic rod 1, and push the pushing block, the positioning block and the workpiece along the surface of the guide plate into the interior of the heating furnace, completing the pushing and loading operation of the workpiece.

[0014] The working principle and beneficial effects of the present invention are: 1. This device has been redesigned to realize the function of automatically adjusting the pushing length. By providing a movable fixed frame, a hydraulic rod and a pushing block, the position where the pushing block abuts against one end of the workpiece is determined by the length of the workpiece. The structure to realize this function is a positioning block located on the back of the pushing block, which has an inclined surface on the side facing the bracket. When the workpiece on the conveyor belt moves forward under the push of the loading plate and the rubber pad, the right end of the workpiece can be used to abut against the inclined surface of the positioning block, and automatically push the positioning block, the pushing block, the hydraulic rod and the fixed frame to move to the right until the left side of the pushing block is flush with and abuts against the abutting end of the workpiece. At this time, the fixed frame, the hydraulic rod, the pushing block and the positioning block have just completed the operation of automatically giving way, so that the distance between the workpiece and the feeding port of the heating furnace is constant, so that the hydraulic rod can push the pushing block and the workpiece to push the workpiece at one time to complete the loading operation, thereby improving the working efficiency of the device.

[0015] 2. Then, the device is also designed with a slider, an adapter plate and an extrusion plate, so that the fixed frame and the hydraulic rod 1 can be in a free moving state when the workpiece enters the surface of the guide plate. After the loading plate is reset, the fixed frame and the hydraulic rod 1 are restored to a fixed state. By setting the adapter plate and the extrusion plate located just in front of the slider, the limit column provides guidance for it, and the compressed spring 2 is used to apply pressure backward to squeeze the extrusion plate and the slider, and generate huge friction. When the hydraulic rod 2 drives the loading plate and the workpiece to move forward through the connecting column 1 and the connecting rod, it drives the connecting column 1 and the connecting rod to move forward. Column two moves forward and continuously compresses spring one. On the one hand, spring one can provide buffer for the movement of connecting column two, and on the other hand, it can continuously exert pressure on the adapter column, movable plate and movable plate, and gradually offset the pressure from spring two, so that the pressure between the adapter plate, the extrusion plate and the slider is reduced, and the friction is reduced, so that when the workpiece enters the upper surface of the guide plate, it is convenient to push the push block, the fixed frame and the slider to move freely along the fixed column. After connecting column two is reset backward with hydraulic rod two, the slider is re-pressed by the adapter plate and the extrusion plate to fix the hydraulic rod one, which is convenient for subsequent pushing and loading.

[0016] 3. Finally, by means of the spring three arranged on the outer surface of the fixed column, the slider drives the fixed frame, the hydraulic rod one and the pushing block as a whole to always have a tendency to move in the feeding direction. When the loading plate drives the connecting column two to move forward, and drives the adapter plate and the extrusion plate to move forward, and reduces the friction between the extrusion plate and the slider, the slider can drive the hydraulic rod one and the pushing block to move freely in the horizontal direction. At this time, the compressed spring three generates pressure on the spring three, and drives the pushing block and the positioning block, so that the positioning block can always be close to the end of the workpiece from the surface of the conveyor belt, so as to realize the subsequent automatic adjustment of the material withdrawal length. By providing the spring one, the connecting column two generates a gradual pressure on the adapter plate and the extrusion plate during the forward movement. Such a design prevents the friction between the extrusion plate and the slider from returning to zero immediately, thereby preventing the slider from being pushed by the spring three, thereby causing the inclined surface of the positioning block to miss the abutment position with the end of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a front perspective schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top view of the overall structure of the present invention; Figure 3 It is a front cutaway schematic diagram of the overall structure of the present invention; Figure 4 It is a side cutaway schematic diagram of the overall structure of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at center A; Figure 6 It is a back perspective schematic diagram of the overall structure of the present invention; Figure 7 It is a schematic diagram of the separation of the fixed frame, hydraulic rod 1, pusher block, guide block, positioning block, fixed column, slider and movable plate of the present invention; Figure 8 It is a schematic diagram of the separation of the support frame, the guide plate, the fixed column, the sliding block, the movable plate and the adapter column of the present invention.

[0019] In the figure: 1. base; 2. pillar; 3. support frame; 4. guide plate; 5. guide groove; 6. fixed frame; 7. hydraulic rod one; 8. push block; 81. guide block; 9. positioning block; 10. bracket; 11. motor; 12. conveyor belt; 13. guide plate; 14. feeding plate; 15. rubber pad; 16. limit plate; 17. hydraulic rod two; 18. connecting column one; 19. connecting rod; 20. connecting column two; 21. feeding plate; 22. fixed column; 23. slider; 24. moving plate; 25. adapter column; 26. guide cylinder; 27. spring one; 28. limit column; 29. ​​adapter plate; 30. extrusion plate; 31. spring two; 32. spring three. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1: A material pushing device with adjustable pushing length comprises a base 1 and a pillar 2. A support frame 3 is installed on the top of the pillar 2. A material guide plate 4 is fixedly installed on the top of the support frame 3. A bracket 10 is installed on the rear side of the top of the base 1. A conveyor belt 12 is installed inside the bracket 10 through a rotating shaft. A motor 11 is installed on the back of the bracket 10. The motor 11 is used to drive the conveyor belt 12. A guide plate 13 is fixedly installed on the top of the bracket 10. A hydraulic rod 17 is installed on the left side of the back of the bracket 10. The telescopic end of the hydraulic rod 17 is fixedly installed. There is a loading plate 14 located on the left side above the conveyor belt 12, and the back of the loading plate 14 is fixedly connected with a connecting column 18, a connecting rod 19 and a connecting column 20, a guide groove 5 is provided on the top of the guide plate 4, and a slider 23 is slidably installed on the inner wall of the guide groove 5, and the top of the slider 23 is fixedly connected with a fixed frame 6 and a hydraulic rod 7, and a push block 8 is fixedly installed on the telescopic end of the hydraulic rod 7, and a positioning block 9 is fixedly installed on the back of the push block 8, a feeding plate 21 is installed between the bracket 10 and the guide plate 4, and the inner wall of the support frame 3 is fixedly installed There is a fixed column 22, and a slider 23 is slidably installed on the surface of the fixed column 22. The front of the support frame 3 is movably sleeved with a limit column 28. The front and rear ends of the limit column 28 are fixedly connected to the limit plate 16 and the adapter plate 29 in sequence. The back of the adapter plate 29 is fixedly installed with an extrusion plate 30. The extrusion plate 30 is adapted to abut against the outer surface of the slider 23. The outer surface of the limit column 28 is movably sleeved with a spring 21. The two ends of the spring 21 are elastically connected to the support frame 3 and the adapter plate 29 respectively. The back of the support frame 3 is fixedly connected with a spring 31 that penetrates to the bracket. 10, the guide cylinder 26 is movably sleeved with an adaptor column [WU2] 25 and a spring 1 27 inside the guide cylinder 26, the front end of the adaptor column 25 is fixedly connected with the moving plate 24, the front face of the moving plate 24 is fixedly connected with the adaptor plate 29, one end of the connecting column 20 is adapted and inserted into the guide cylinder 26, the two ends of the spring 1 27 are elastically connected with the adaptor column 25 and the connecting column 20 respectively, the outer surface of the fixed column 22 is movably sleeved with a spring 32, the two ends of the spring 32 are elastically connected with the slider 23 and the support frame 3 respectively; The device has been redesigned to realize the function of automatically adjusting the pushing length. By providing a movable fixed frame 6, a hydraulic rod 7 and a pushing block 8, the position where the pushing block 8 abuts against one end of the workpiece is determined by the length of the workpiece. The structure for realizing this function is a positioning block 9 located on the back of the pushing block 8, which has an inclined surface on the side facing the bracket 10. When the workpiece on the conveyor belt 12 moves forward under the push of the loading plate 14 and the rubber pad 15, the right end of the workpiece can be used to abut against the inclined surface of the positioning block 9, and the positioning block 9, the pushing block 8, the hydraulic rod 7 and the fixed frame 6 can be automatically pushed to move to the right until the left side of the pushing block 8 is flush with and abuts against the abutting end of the workpiece. At this time, the fixed frame 6, the hydraulic rod 7, the pushing block 8 and the positioning block 9 have just completed the automatic giving way operation, so that the distance between the workpiece and the feeding port of the heating furnace is constant, so that the hydraulic rod 7 can push the pushing block 8 and the workpiece to push the workpiece at one time to complete the loading operation, thereby improving the working efficiency of the device.

[0022] Then, the device is also designed with a slider 23, an adapter plate 29 and an extrusion plate 30, so that the fixed frame 6 and the hydraulic rod 7 can be in a free moving state when the workpiece enters the surface of the guide plate 4. After the loading plate 14 is reset, the fixed frame 6 and the hydraulic rod 7 are restored to a fixed state. By setting the adapter plate 29 and the extrusion plate 30 located just in front of the slider 23, the limit column 28 provides guidance for it, and uses the compressed spring 2 31 to apply pressure backward to squeeze the extrusion plate 30 and the slider 23 and generate a huge friction force. When the hydraulic rod 2 17 drives the loading plate 14 and the workpiece to move forward through the connecting column 18 and the connecting rod 19, it drives the connecting column 2 2 0 moves forward and continuously compresses spring 1 27. On the one hand, spring 1 27 can provide buffer for the movement of connecting column 20, and on the other hand, it can continuously apply pressure to adapter column 25, moving plate 24 and moving plate 24, and gradually offset the pressure from spring 2 31, so that the pressure between adapter plate 29, extrusion plate 30 and slider 23 is reduced, and the friction is reduced, so that when the workpiece enters the upper surface of guide plate 4, it is convenient to push the push block 8, fixed frame 6 and slider 23 to move freely along fixed column 22. After connecting column 20 is reset backward with hydraulic rod 2 17, the adapter plate 29 and extrusion plate 30 are used to re-press slider 23, so that hydraulic rod 1 7 is fixed, which is convenient for subsequent pushing and loading.

[0023] Finally, by means of the spring three 32 arranged on the outer surface of the fixed column 22, the slider 23 drives the fixed frame 6, the hydraulic rod one 7 and the push block 8 to always have a tendency to move in the feeding direction as a whole. When the loading plate 14 drives the connecting column two 20 to move forward, and drives the adapter plate 29 and the extrusion plate 30 to move forward, and reduces the friction between the extrusion plate 30 and the slider 23, the slider 23 can drive the hydraulic rod one 7 and the push block 8 to move freely in the horizontal direction. At this time, the spring three 32 produced by the compressed spring three 32 The spring 1 27 is provided so that the connecting column 20 generates pressure on the adapter plate 29 and the extrusion plate 30 during the forward movement. This design prevents the friction between the extrusion plate 30 and the slider 23 from returning to zero immediately, thereby preventing the slider 23 from being pushed by the spring 32, thereby causing the inclined surface of the positioning block 9 to miss the abutment position with the end of the workpiece.

[0024] Embodiment 2: The guide plate 4 is located in front of the bracket 10, and the two sides of the feed plate 21 are respectively fixedly connected to the left side of the front of the bracket 10 and the middle of the back of the guide plate 4, and the upper surfaces of the conveyor belt 12 and the guide plate 4 are both placed with workpieces; The guide plate 4 is used to place the workpiece to be pushed. When the hydraulic rod 17 drives the loading plate 14 and the rubber pad 15 to push the workpiece forward, the feeding plate 21 fills the blank area between the conveyor belt 12 and the guide plate 4, facilitating the transition before the workpiece is loaded.

[0025] Embodiment 3: The connecting column 18 is fixedly connected to the right side of the back of the loading plate 14, the connecting rod 19 is fixedly connected to the rear end of the connecting column 18, the connecting column 20 is fixedly connected to the right side of the front of the connecting rod 19, and the front end of the connecting column 20 is adapted to be plugged into the inner wall of the guide cylinder 26; Connecting column 18 and connecting rod 19 are used to connect the loading plate 14 and connecting column 20. When hydraulic rod 217 drives the loading plate 14, connecting column 18 and connecting rod 19 to move forward, it will drive connecting column 20 to move forward and continuously compress spring 1 27 inside the guide cylinder 26, so that the power from the loading plate 14 is flexibly transmitted to the adapter plate 29, so that the adapter plate 29 and the extrusion plate 30 can gradually reduce the friction generated between the outer surface of the slider 23.

[0026] Embodiment 4: The adapter plate 29 has an arc surface with a diameter equal to that of the slider 23 on one side thereof, and the extrusion plate 30 is adapted and installed on the arc surface. The adapter plate 29 and the extrusion plate 30 are pressed forward by the spring 2 31, and the extrusion plate 30 abuts against the outer surface of the slider 23. like Figure 5 As shown, the arc surface of the adapter plate 29 is installed with an extrusion plate 30. Under the elastic force of the spring 2 31, the extrusion plate 30 abuts against the outer surface of the slider 23 and generates friction, so that the slider 23, the fixed frame 6 and the hydraulic rod 1 7 are fixed.

[0027] Embodiment 5: The outer surfaces of the extrusion plate 30 and the slider 23 are both made of materials with a high friction coefficient, and the friction force generated by the contact between the extrusion plate 30 and the slider 23 is greater than the reaction force exerted by the hydraulic rod 7 when pushing the workpiece; The outer surfaces of the extrusion plate 30 and the slider 23 are made of materials with a high friction coefficient. When the spring 2 31 squeezes the adapter plate 29, a huge friction force is generated between the extrusion plate 30 and the outer surface of the slider 23 due to the pressure, thereby limiting the movement of the slider 23 and the hydraulic rod 1 7.

[0028] Embodiment 6: The cross-sectional shape of the positioning block 9 in top view is a right triangle, and the inclined surface of the positioning block 9 faces the front side of the bracket 10; like Figure 5 As shown, the inclined surface design of the positioning block 9 enables the right end of the workpiece to abut against it when moving forward, and generates a thrust to the right for the positioning block 9 and the push block 8. The spring 32 pushes the slider 23 to move in the direction so that the left side of the push block 8 can maintain abutment with a section of the workpiece.

[0029] Embodiment 7: The high friction coefficient material is made of cast iron or steel or synthetic resin or ceramic material, and the upper side of the moving plate 24 is clearance-fitted with the inner wall of the guide groove 5; There are many options for high coefficient of friction materials, which are determined by the actual staff on site.

[0030] Embodiment 8: Another set of arc surfaces is provided on the front side of the moving plate 24 facing the outer surface of the slider 23, and a gap is left between the front side of the moving plate 24 and the slider 23; The function of the moving plate 24 is to push the adapter plate 29 and the extrusion plate 30 forward under the push of the connecting column 20, the spring 1 27 and the adapter column 25, and to make the extrusion plate 30 disengage from the slider 23, so that the slider 23, the hydraulic rod 1 7 and the push block 8 can move freely.

[0031] Embodiment 9: A guide block 81 is provided at the bottom of the pusher block 8, and the guide block 81 is slidably installed in the guide groove 5. A rubber pad 15 is glued to the front of the loading plate 14, and a plurality of grooves are provided on the surface of the rubber pad 15; The guide block 81 assists the push block 8 to move horizontally on the upper surface of the guide plate 4 and provides a guiding function. The rubber pad 15 is responsible for contacting the workpiece and providing a buffer for the workpiece.

[0032] A material pushing method of a material pushing device with adjustable material pushing length comprises the following steps: S1. The left side of the guide plate 4 is docked with the feed port of the heating furnace, the position of the device is adjusted, the motor 11 is started, and the conveyor belt 12 is driven to rotate, so that the workpiece falling on the surface of the conveyor belt 12 moves horizontally from right to left along the feed direction; S2. The workpiece moves to the leftmost side of the top of the conveyor belt 12 under the drive of the conveyor belt 12 and contacts the loading plate 14. At this time, the conveyor belt 12 is stopped, the hydraulic rod 17 is started, and the loading plate 14, the connecting column 18, the connecting rod 19 and the connecting column 20 are driven to move forward; S3. The connecting column 20 starts to move forward along the guide cylinder 26 and continuously compresses the spring 27, transmitting the pressure to the adapter column 25, the movable plate 24 and the adapter plate 29. At this time, the adapter plate 29 starts to drive the extrusion plate 30 to move forward and compress the spring 2 31; S4. Then, the pressure between the extrusion plate 30 and the slider 23 is reduced, the friction force is reduced, the slider 23, the fixed frame 6, the hydraulic rod 7 and the pusher block 8 can move freely. When the extrusion plate 30 moves forward to the limit, the connecting column 20 still continues to compress the spring 27 and moves forward; S5. Then, the workpiece is pushed forward by the loading plate 14 and the rubber pad 15, and enters the upper surface of the guide plate 4 through the feeding plate 21. When the workpiece enters the surface of the guide plate 4, its right end abuts against the inclined surface of the positioning block 9, and generates a rightward thrust on the positioning block 9, the pusher block 8, the hydraulic rod 7 and the fixed frame 6 as a whole, until the right end of the workpiece is flush with the left side of the pusher block 8, and the pusher block 8 and the positioning block 9 no longer move to the right; S6. Then, the hydraulic rod 17 drives the loading plate 14 and the connecting column 20 to reset. At this time, the connecting column 20 retracts, so that the pressure on the spring 27 is gradually reduced, and the pressure of the moving plate 24 on the adapter plate 29 is reduced. The adapter plate 29 and the extrusion plate 30 are re-contacted with the slider 23 under the elastic force of the spring 31, and friction is generated. At this time, the slider 23 and the fixed frame 6 are in a fixed state; S7. Finally, the hydraulic rod 7 is started, and the pushing block 8, the positioning block 9 and the workpiece are pushed along the surface of the guide plate 4 into the interior of the heating furnace, completing the pushing and loading operation of the workpiece.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A material pushing device with adjustable pushing length, comprising a base (1) and a support column (2), a support frame (3) being installed on the top of the support column (2), a material guide plate (4) being fixedly installed on the top of the support column (3), a bracket (10) being installed on the rear side of the top of the base (1), a conveyor belt (12) being rotatably installed inside the bracket (10) via a rotating shaft, a motor (11) being installed on the back of the bracket (10), the motor (11) being used to drive the conveyor belt (12), characterized in that: A guide plate (13) is fixedly mounted on the top of the bracket (10), a hydraulic rod (17) is mounted on the left side of the back of the bracket (10), a loading plate (14) located on the left side above the conveyor belt (12) is fixedly mounted on the telescopic end of the hydraulic rod (17), a connecting column (18), a connecting rod (19) and a connecting column (20) are fixedly connected on the back of the loading plate (14), a guide groove (5) is formed on the top of the guide plate (4), a slider (23) is slidably mounted on the inner wall of the guide groove (5), and the top of the slider (23) is fixedly mounted on the inner wall of the guide groove (5). A fixed frame (6) and a hydraulic rod (7) are fixedly connected, a push block (8) is fixedly installed at the telescopic end of the hydraulic rod (7), a positioning block (9) is fixedly installed on the back of the push block (8), a feeding plate (21) is installed between the bracket (10) and the guide plate (4), a fixed column (22) is fixedly installed on the inner wall of the support frame (3), the slider (23) is slidably installed on the surface of the fixed column (22), the front side of the support frame (3) is movably sleeved with a limit column (28), and the front and rear ends of the limit column (28) are fixed in sequence. A limit plate (16) and an adapter plate (29) are connected, an extrusion plate (30) is fixedly mounted on the back of the adapter plate (29), the extrusion plate (30) is adapted to abut against the outer surface of the slider (23), a second spring (31) is movably sleeved on the outer surface of the limit column (28), the two ends of the second spring (31) are elastically connected to the support frame (3) and the adapter plate (29) respectively, a guide cylinder (26) penetrating the inner wall of the bracket (10) is fixedly connected to the back of the support frame (3), and an adapter column (21) is movably sleeved inside the guide cylinder (26) The adapter column (25) and spring one (27) are connected to the adapter column (25), the front end of the adapter column (25) is fixedly connected to the movable plate (24), the front face of the movable plate (24) is fixedly connected to the adapter plate (29), one end of the connecting column (20) is adapted to be inserted into the guide cylinder (26), the two ends of the spring one (27) are elastically connected to the adapter column (25) and the connecting column (20), respectively, the outer surface of the fixed column (22) is movably sleeved with a spring three (32), and the two ends of the spring three (32) are elastically connected to the slider (23) and the support frame (3), respectively.

2. A material pushing device with adjustable pushing length according to claim 1, characterized in that: The guide plate (4) is located directly in front of the bracket (10), and the two sides of the feed plate (21) are respectively fixedly connected to the left side of the front of the bracket (10) and the middle of the back of the guide plate (4), and workpieces are placed on the upper surfaces of the conveyor belt (12) and the guide plate (4).

3. A material pushing device with adjustable pushing length according to claim 2, characterized in that: The connecting column 1 (18) is fixedly connected to the right side of the back side of the loading plate (14), the connecting rod (19) is fixedly connected to the rear end of the connecting column 1 (18), the connecting column 2 (20) is fixedly connected to the right side of the front side of the connecting rod (19), and the front end of the connecting column 2 (20) is adapted to be inserted into the inner wall of the guide cylinder (26).

4. A pushing device with adjustable pushing length according to claim 3, characterized in that: The adapter plate (29) is provided with an arc surface having a diameter equal to that of the slider (23) on one side thereof facing the slider (23). The extrusion plate (30) is adapted to be mounted on the arc surface. The adapter plate (29) and the extrusion plate (30) are pressed forward by the second spring (31), and the extrusion plate (30) is brought into contact with the outer surface of the slider (23).

5. A material pushing device with adjustable pushing length according to claim 4, characterized in that: The outer surfaces of the extrusion plate (30) and the slider (23) are both made of a material with a high friction coefficient, and the friction force generated by the contact between the extrusion plate (30) and the slider (23) is greater than the reaction force exerted on the workpiece by the hydraulic rod (7) when pushing it.

6. A material pushing device with adjustable pushing length according to claim 5, characterized in that: The cross-sectional shape of the positioning block (9) when viewed from above is a right triangle, and the inclined surface of the positioning block (9) faces the front side of the bracket (10).

7. A material pushing device with adjustable pushing length according to claim 6, characterized in that: The high friction coefficient material is made of cast iron or steel or synthetic resin or ceramic material, and the upper side of the moving plate (24) is clearance-matched with the inner wall of the guide groove (5).

8. A material pushing device with adjustable pushing length according to claim 7, characterized in that: Another group of arc surfaces is provided on the front side of the movable plate (24) facing the outer surface of the sliding block (23), and a gap is left between the front side of the movable plate (24) and the sliding block (23).

9. A material pushing device with adjustable pushing length according to claim 8, characterized in that: A guide block (81) is provided at the bottom of the push block (8), and the guide block (81) is slidably installed in the guide groove (5). A rubber pad (15) is glued to the front of the loading plate (14), and a plurality of grooves are formed on the surface of the rubber pad (15).

10. A material pushing method of a material pushing device with adjustable material pushing length, characterized in that: The following steps are involved: S1. The left side of the guide plate (4) is docked with the feed port of the heating furnace, the position of the device is adjusted, the motor (11) is started, and the conveyor belt (12) is driven to rotate, so that the workpiece falling on the surface of the conveyor belt (12) moves horizontally from right to left along the feed direction; S2. The workpiece moves to the leftmost side of the top of the conveyor belt (12) under the drive of the conveyor belt (12) and contacts the loading plate (14). At this time, the conveyor belt (12) is stopped, the hydraulic rod 2 (17) is started, and the loading plate (14), the connecting column 1 (18), the connecting rod (19) and the connecting column 2 (20) are driven to move forward; S3. The connecting column 2 (20) begins to move forward along the guide cylinder (26) and continuously compresses the spring 1 (27), transmitting the pressure to the adapter column (25), the movable plate (24) and the adapter plate (29). At this time, the adapter plate (29) begins to drive the extrusion plate (30) to move forward and compress the spring 2 (31); S4. Then, the pressure between the extrusion plate (30) and the slider (23) is reduced, the friction force is reduced, the slider (23), the fixed frame (6), the hydraulic rod (7) and the pusher block (8) can move freely. When the extrusion plate (30) moves forward to the limit, the connecting column (20) still continues to compress the spring (27) and moves forward; S5. Then, the workpiece is pushed forward by the loading plate (14) and the rubber pad (15), and enters the upper surface of the guide plate (4) through the feeding plate (21). When the workpiece enters the surface of the guide plate (4), its right end abuts against the inclined surface of the positioning block (9), and generates a rightward thrust on the positioning block (9), the push block (8), the hydraulic rod 1 (7) and the fixed frame (6) as a whole, until the right end of the workpiece is flush with the left side of the push block (8), and the push block (8) and the positioning block (9) no longer move to the right; S6. Then, the hydraulic rod 2 (17) drives the loading plate (14) and the connecting column 2 (20) to reset. At this time, the connecting column 2 (20) retracts, so that the pressure on the spring 1 (27) is gradually reduced, and the pressure of the moving plate (24) on the adapter plate (29) is reduced. The adapter plate (29) and the extrusion plate (30) are re-contacted with the slider (23) under the elastic force of the spring 2 (31), and friction is generated. At this time, the slider (23) and the fixed frame (6) are in a fixed state; S7. Finally, the hydraulic rod 1 (7) is started to push the push block (8), the positioning block (9) and the workpiece along the surface of the guide plate (4) into the interior of the heating furnace, thereby completing the workpiece pushing and loading operation.

Images