Gradual pushing type servo rejector

Abstract

The utility model discloses a gradually-pushing type servo rejecting device, and relates to a rejecting device. Comprising a rejector body and a shell, the rejector body is arranged in the shell, a main photoelectric support, a photoelectric device and a front protection plate are installed on the front side of the shell, a fixing support is installed below the shell, adjusting supporting legs are arranged at the bottom of the fixing support, and the shell is arranged at the top of the fixing support through a fixing support connecting plate; and an electric appliance control cabinet is arranged behind the shell. According to the automatic rejecting device, rejecting signals can be output after inferior-quality products are detected by online detection equipment, the gradually-pushing type servo rejecting device receives the signals and accurately rejects the inferior-quality products, the problems of bottle falling, bottle clamping, bottle explosion and the like are solved in the rejecting process, meanwhile, relevant parameters can be set only through an operation screen, and mechanical position adjustment is not needed any more according to different products; the production efficiency and the safety of operators and products are greatly improved, and meanwhile secondary pollution of the products is avoided.

Description

Technical Field

[0001] The utility model relates to a rejector, in particular to a progressive push type servo rejector. Background Art

[0002] In the automatic filling, packaging and palletizing production lines of modern chemical industry, food, beer, beverages, etc., it is often necessary to install defective product detection and rejection equipment. Because, due to the failure of the front-end equipment or the raw materials, the packaged products occasionally have defective products such as weight over-tolerance, leakage, insufficient liquid level without label or impurities such as metal mixed in the product. In order to ensure the quality of the product, people usually connect and install weight re-inspection machines, metal foreign body detectors, leakage detectors, liquid level detectors, label detectors and other detection equipment and defective product rejectors between the automatic packaging equipment and the automatic palletizing equipment. If the production line has unqualified products, the detection machine will detect them, and the online detection equipment will transmit the signal to the defective product rejector connected to their back end. When the defective products are transported to the defective product rejector, they will be rejected from the production line and will no longer enter the next production process of the production line such as labeling, packing, palletizing and other processes.

[0003] There are two main types of defective product rejection machines currently used in the market;

[0004] The general technical solution for the first type of conveyor belt shifting rejection is two perpendicular conveyors, one of which is directly connected to the automatic packaging and palletizing production line for roller conveyor, and the other is installed vertically therewith for belt conveyor. The belt conveyor is equipped with a lifting mechanism. When the products on the production line are conveyed normally, the belt surface of the belt conveyor sinks below the conveying surface of the roller conveyor. When defective products appear on the production line, the weight re-inspection machine or metal detector at the front end transmits the detection signal to the defective rejection machine. However, obvious deficiencies are exposed during actual production and use, that is, when defective products are being rejected, the linear roller conveyor must stop, and the products at the rear end can no longer be conveyed forward, which has a great impact on the efficiency of the entire production line.

[0005] The second type is the traditional pneumatic type, which includes direct-impact type rejectors and multi-cylinder guided type rejectors. The general technical solution for the direct-impact type rejector is to make a fixed bracket on the conveying equipment and directly install a cylinder to drive the reject block to directly hit the defective products and remove them. The general technical solution for the multi-cylinder guided type rejector is to make a fixed bracket on the conveying equipment and directly install multiple cylinders to drive the reject block to directly move and guide the defective products out and remove them.

[0006] Traditional pneumatic ejectors are greatly affected by factors such as air source pressure, flow stability, solenoid valve cylinder response time, and compressed air quality. They have obvious shortcomings in actual production and use: (1) Traditional pneumatic ejectors consume a lot of gas when continuously ejecting at high speed (such as a beer production line reaching more than 24,000 bottles per hour), which will cause inaccurate ejection positions and inadequate ejection actions, so that unqualified products cannot be effectively ejected. Products are stuck in the conveyor line, causing bottle jams, bottle blockages, and bottle explosions, resulting in shutdowns, making the entire production line unable to operate continuously, greatly reducing production efficiency and increasing the workload of operators. (2) It poses a great threat to operator safety. For example, bottle jams and bottle blockages in the beer production line will cause bottle explosions. (3) After defective products are damaged, they will cause secondary pollution to the production line and products. (4) Traditional ejectors need to adjust the air source pressure flow and mechanical position (such as height, front and back position, and center of gravity) for different products, so they have high requirements for operators. The debugging cycle is complicated and long when changing product lines, affecting production efficiency.

[0007] In summary, the utility model provides a progressive push servo rejector with high working efficiency and safety. Utility Model Content

[0008] In view of the deficiencies in the prior art, the utility model aims to provide a progressive push servo rejector, which can output a rejection signal after the online detection equipment detects defective products. The progressive push servo rejector receives the signal and rejects the products accurately and correctly, and solves the problems of bottle inversion, bottle jamming and bottle explosion in the rejection process. At the same time, for different products, only relevant parameters need to be set through the operation screen without adjusting the mechanical position, which greatly improves the production efficiency and the safety of operators and products while avoiding secondary contamination of products.

[0009] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a progressive push servo rejector, comprising a rejector body and a shell, the rejector body is arranged in the shell, the main photoelectric bracket, the photoelectric device and the front protective plate are installed on the front side of the shell, a fixed bracket is installed below the shell, an adjustment foot is arranged at the bottom of the fixed bracket, the shell is arranged on the top of the fixed bracket through a fixed bracket connecting plate, and an electrical control cabinet is installed at the rear of the shell.

[0010] Preferably, the rejector body includes a bearing support plate, a first bearing adjustment plate, a protective cover pad, a main servo motor, a medium-speed reject upper cover plate, a second bearing adjustment plate, a first reset bearing block, a second reset bearing block, a low-speed guide plate, a reject end face support rod, a second reject guide rail fixing plate, a guide rail mounting plate, a lower buffer pad, a second lower support plate, a second reject end guide rail, a second reject support block, a driven sprocket, a first reject end guide rail, a driven shaft, a first reject driven wheel expansion block, a medium-speed reject intermediate pad, a first medium-speed reject upper guide rail, a first medium-speed base plate, an intermediate support plate, a first lower support plate, a first reject support block, a torque limiter, a first lower support rail, a first medium-speed reject lower guide rail, a reducer, a medium-speed return plate, a return guide rail, and a second medium-speed base plate. Plate, driving sprocket, first rejection bearing seat, main transmission shaft, main synchronous belt, limiter connecting piece, synchronous pulley, tensioning wheel plate, tensioning wheel, fixed column, main synchronous pulley, fixed pad, second rejection driven wheel expansion block, rejection pressure block, medium-speed rejection chain, fixed block, limit block, fourth buffer pad, chain mounting plate, push block, third push block buffer pad, first push block buffer pad and first push block fixed shaft, three protective cover pads and a main servo motor are arranged on the medium-speed rejection upper cover plate, a bearing support plate and a first bearing adjustment plate are arranged on one side of the medium-speed rejection upper cover plate, a second bearing adjustment plate, a first reset bearing block, a second reset bearing block, a low-speed guide plate and a rejection end face support rod are arranged on the other side of the medium-speed rejection upper cover plate, and a rejection end face support rod is arranged below The first medium-speed base plate is connected to the second medium-speed base plate through the middle support plate, and a driving sprocket and a driven sprocket are respectively arranged on both sides between the first medium-speed base plate and the second medium-speed base plate, and the driving sprocket is arranged on the main transmission shaft, and a first rejection bearing seat is arranged at the end of the main transmission shaft, and the synchronous pulley on the main transmission shaft is connected to the main synchronous pulley through the main synchronous belt, and a tensioning wheel is arranged on the outer side of the main synchronous belt through a tensioning wheel plate and a fixed column, and the driven sprocket is arranged on the driven shaft, and the driven sprocket is arranged on the driven shaft. The first reject driven wheel expansion block and the second reject driven wheel expansion block are respectively arranged at the upper and lower ends of the driving shaft, and the reject pressure block and the fixed pad are respectively arranged on both sides of the second reject driven wheel expansion block, and the second reject support block is arranged on one side of the bottom of the driven shaft, the driving sprocket is connected to the main servo motor through the reducer, and the lower end of the driving sprocket is also connected to the torque limiter through the limiter connecting piece, the first medium-speed reject lower guide rails are arranged on both sides of the second medium-speed base plate, the first lower support rail is arranged below the second medium-speed base plate, the first lower support rail is connected to the return guide rail, and a medium-speed return plate is arranged below the return guide rail, the first lower support rail is arranged on the first lower support plate, the second lower support plate is arranged at the end of the first lower support plate, a lower buffer pad is arranged on the second lower support plate, and the first reject support block is arranged below the first lower support plate;The driving sprocket and the driven sprocket are connected by a medium-speed rejection chain, and the medium-speed rejection chain is connected to the chain mounting plate through a fixed block, a limit block, and a fourth buffer pad. A first push block fixed shaft is installed below the chain mounting plate, and the first push block fixed shaft is connected to the push block through a first push block buffer pad and a third push block buffer pad. ;

[0011] Preferably, a switching mechanism motor is installed below the second rejecting support block through a switching mechanism fixing plate, a switching mechanism protective cover is arranged outside the switching mechanism motor, the switching mechanism motor is connected to the rotating wheel, a rejecting wheel is arranged on the rotating wheel through the first rejecting wheel fixing block and the second rejecting wheel fixing block, and a thumbwheel protective cover is arranged outside the rejecting wheel.

[0012] Preferably, a pneumatic rejection mechanism rejection block is arranged below the second rejection support block, the pneumatic rejection mechanism rejection block is connected to the pneumatic rejection mechanism cylinder, and a pneumatic rejection mechanism protection fixing box is arranged below the pneumatic rejection mechanism cylinder, and a pneumatic rejection mechanism solenoid valve is also arranged on the pneumatic rejection mechanism protection fixing box.

[0013] The utility model has the following beneficial effects:

[0014] 1. The rejection speed is faster, reaching 1,300 times per minute, while the traditional pneumatic rejector can only reject 600 times per minute at most;

[0015] 2. The rejection is stable and the bottles will not fall, get stuck or explode. The traditional rejector has an inaccurate rejection position and directly hits the products. When rejecting multiple bottles continuously, the rejection is stable and is not greatly affected by the external air source.

[0016] 3. It is safer to use and has higher production efficiency. Since the progressive servo rejector completely solves the problems of bottle jamming, bottle falling and bottle explosion, the production line can run continuously, the production process reduces manual intervention and improves the safety of operators.

[0017] 4. Wide applicability and compatibility. For products of different shapes and sizes, it can be solved by simply adjusting the number of push blocks through parameters (for example, in the beverage and beer industry, conical bottles and special-shaped bottles have always been difficult to reject, and the progressive push servo rejector completely solves the problem).

[0018] 5. The progressive push servo rejector has a reasonable design, simple debugging, and full servo control. It is easy to use and maintain, which greatly reduces the customer's maintenance cost.

[0019] 6. The utility model not only has the function of rejection, but also can be used for lane separation when the single lane needs to be changed into double lanes at the production site. It has powerful functions and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is described in detail below with reference to the accompanying drawings and specific implementation methods;

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is a schematic diagram of the planar structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the main body of the rejector of the utility model;

[0024] Figure 4 for Figure 3 Another schematic diagram of the position of

[0025] Figure 5 It is a schematic diagram of the rejector body with a chain structure;

[0026] Figure 6 It is a schematic diagram of the rejection mechanism of the utility model;

[0027] Figure 7 This is a schematic diagram of another cylinder-type rejecting mechanism of the utility model. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] Reference Figure 1-7 The present specific implementation adopts the following technical scheme: a progressive push servo rejector, comprising a rejector body 1 and a shell 2, wherein the rejector body 1 is arranged in the shell 2, a main photoelectric bracket 3, a photoelectric device 4 and a front protective plate 5 are installed on the front side of the shell 2, a fixed bracket 6 is installed below the shell 2, an adjusting foot 7 is arranged at the bottom of the fixed bracket 6, the shell 2 is arranged on the top of the fixed bracket 6 through a fixed bracket connecting plate 8, and an electrical control cabinet 9 is installed at the rear of the shell 2.

[0030] It is worth noting that the rejector body 1 includes a bearing support plate 11, a first bearing adjustment plate 12, a protective cover pad 13, a main servo motor 14, a medium-speed reject upper cover plate 15, a second bearing adjustment plate 16, a first reset bearing block 17, a second reset bearing block 18, a low-speed guide plate 19, a reject end face support rod 110, a second reject guide rail fixing plate 111, a guide rail mounting plate 112, a lower buffer pad 113, a second lower support plate 114, a second reject end guide rail 115, a second reject support block 116, a driven sprocket 117, a first reject end guide rail 118, a driven shaft 119, a first reject driven wheel expansion block 120, a medium-speed reject intermediate pad 121, a first medium-speed reject upper guide rail 122, a first medium-speed substrate 123, and an intermediate Support plate 124, first lower support plate 125, first rejection support block 126, torque limiter 127, first lower support rail 128, first medium-speed rejection lower guide rail 129, reducer 130, medium-speed return plate 131, return guide rail 132, second medium-speed base plate 133, driving sprocket 134, first rejection bearing seat 135, main transmission shaft 136, main synchronous belt 137, limiter connecting piece 138, synchronous pulley 139, tensioning wheel plate 140, tensioning wheel 141, fixed column 142, main synchronous pulley 143, fixed pad 144, second rejection driven wheel expansion block 145, rejection pressure block 146, medium-speed rejection chain 147, fixed block 148, limit block 149, fourth buffer pad 150, chain mounting plate 151, A push block 152, a third push block buffer pad 153, a first push block buffer pad 154 and a first push block fixed shaft 155, three protective cover pads 13 and a main servo motor 14 are arranged on the medium-speed rejection upper cover plate 15, a bearing support plate 11 and a first bearing adjustment plate 12 are arranged on one side of the medium-speed rejection upper cover plate 15, and a second bearing adjustment plate 16, a first reset bearing block 17, a second reset bearing block 18, a low-speed guide plate 19 and a rejection end face support rod 110 are arranged on the other side of the medium-speed rejection upper cover plate 15, and the rejection end face support rod 110 is connected to the guide rail mounting plate 112 through the second rejection guide rail fixing plate 111 below, and the guide rail mounting plate 112 is provided with a second rejection end guide rail 115 and a first rejection end guide rail 118, and the medium-speed rejection upper cover plate 1 A first medium-speed base plate 123 is arranged below the medium-speed reject intermediate pad 121, a first medium-speed reject upper guide rail 122 is arranged below the first medium-speed base plate 123, the first medium-speed base plate 123 is connected to the second medium-speed base plate 133 through the intermediate support plate 124, a driving sprocket 134 and a driven sprocket 117 are arranged on both sides between the first medium-speed base plate 123 and the second medium-speed base plate 133, the driving sprocket 134 is arranged on the main transmission shaft 136, a first reject bearing seat 135 is arranged at the end of the main transmission shaft 136, a synchronous pulley 139 on the main transmission shaft 136 is connected to a main synchronous pulley 143 through a main synchronous belt 137, and a tensioning wheel 141 is arranged on the outer side of the main synchronous belt 137 through a tensioning wheel plate 140 and a fixing column 142.The driven sprocket 117 is arranged on the driven shaft 119, and the first rejection driven wheel tightening block 120 and the second rejection driven wheel tightening block 145 are respectively arranged at the upper and lower ends of the driven shaft 119, and the rejection pressure block 146 and the fixed cushion block 144 are respectively arranged on both sides of the second rejection driven wheel tightening block 145. A second rejection support block 116 is arranged on one side of the bottom of the driven shaft 119, and the driving sprocket 134 is connected to the main servo motor 14 through the reducer 130. The lower end of the driving sprocket 134 is also connected to the torque limiter 127 through the limiter connecting piece 138. The first medium-speed rejection lower guide rails 129 are arranged on both sides of the second medium-speed base plate 133, and the first lower support rail 128 is arranged below the second medium-speed base plate 133. The first lower support rail 128 is connected to the return guide rail 132, and the return guide rail 1 A medium-speed return plate 131 is arranged below the first lower support rail 128, and a second lower support plate 114 is arranged at the end of the first lower support plate 125. A lower buffer pad 113 is arranged on the second lower support plate 114, and a first rejection support block 126 is arranged below the first lower support plate 125; the driving sprocket 134 and the driven sprocket 117 are connected by a medium-speed rejection chain 147, and the medium-speed rejection chain 147 is connected to the chain mounting plate 151 through a fixed block 148, a limit block 149, and a fourth buffer pad 150. A first push block fixed shaft 155 is installed below the chain mounting plate 151, and the first push block fixed shaft 155 is connected to the push block 152 through the first push block buffer pad 154 and the third push block buffer pad 153.

[0031] It is worth noting that a switching mechanism motor 156 is installed below the second rejecting support block 116 through a switching mechanism fixing plate 158, a switching mechanism protective cover 157 is arranged outside the switching mechanism motor 156, the switching mechanism motor 156 is connected to a rotating wheel 162, a rejecting wheel 160 is arranged on the rotating wheel 162 through a first rejecting wheel fixing block 161 and a second rejecting wheel fixing block 163, and a thumbwheel protective cover 159 is arranged outside the rejecting wheel 160.

[0032] In addition, a pneumatic rejection mechanism rejection block 165 is arranged below the second rejection support block 116, and the pneumatic rejection mechanism rejection block 165 is connected to the pneumatic rejection mechanism cylinder 166. Below the pneumatic rejection mechanism cylinder 166 is a pneumatic rejection mechanism protection fixing box 167, and the pneumatic rejection mechanism protection fixing box 167 is also provided with a pneumatic rejection mechanism solenoid valve 168.

[0033] The working principle of this specific implementation method is: the servo motor drives the bottle pushing block on the sprocket chain through the reducer to run synchronously with the conveyor belt on the customer's site. When the detection equipment detects unqualified products, it gives a rejection signal (EBI / FBI). When the machine receives the rejection signal and the main photoelectric device of the machine detects the bottle, it triggers the rejection mechanism to change the bottle pushing block to the bottle pushing position, and gradually pushes the product out in the same position as the product to be rejected. Unlike traditional rejectors that use striking or fixed guide rejection, the synchronous gradual rejection is more stable and can completely solve the problem of bottle inversion and bottle jamming, and can be used as a divider. It is currently divided into medium-speed and high-speed models. The maximum speed of the medium-speed model is 60000B / H, and the high-speed model is 80000B / H. The model can also be customized according to the speed of the production line.

[0034] This specific embodiment is a servo rejector used for rejecting defective products on automatic filling, packaging and palletizing production lines for chemical, food, beer, beverages, etc. The push-type servo rejector can be ready to reject unqualified products when they are detected online. At the same time, it only needs to adjust the corresponding parameters for different products, which greatly improves the flexibility of the push-type servo rejector. Its advantages are as follows:

[0035] (1) The rejection speed is faster, reaching 1,300 times per minute, while the traditional pneumatic rejector can only reject 600 times per minute at most;

[0036] (2) The rejection is stable and the bottles will not fall, get stuck or explode. The traditional rejector has an inaccurate rejection position and directly hits the products. When rejecting multiple bottles continuously, the rejection is stable and is not greatly affected by the external air source.

[0037] (3) It is safer to use and has higher production efficiency. Since the progressive push servo rejector completely solves the problems of bottle jamming, bottle falling and bottle explosion, the production line can run continuously, the production process reduces manual intervention and improves the safety of operators.

[0038] (4) Wide applicability and compatibility. Products of different shapes and sizes can be solved by simply adjusting the number of push blocks through parameters (for example, in the beverage and beer industries, conical bottles and special-shaped bottles have always been difficult to reject, and the progressive push servo rejector completely solves this problem).

[0039] (5) The progressive servo rejector has a reasonable design, simple debugging, and full servo control, which is easy to use and maintain and greatly reduces the customer's maintenance costs.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. Progressive push servo ejector, characterized in that: The invention comprises a rejector body (1) and a shell (2), wherein the rejector body (1) is arranged in the shell (2), a main photoelectric bracket (3), a photoelectric device (4) and a front protective plate (5) are installed on the front side of the shell (2), a fixed bracket (6) is installed below the shell (2), an adjustment foot (7) is arranged at the bottom of the fixed bracket (6), the shell (2) is arranged on the top of the fixed bracket (6) through a fixed bracket connecting plate (8), and an electrical control cabinet (9) is installed at the rear of the shell (2).

2. The progressive push servo ejector according to claim 1, characterized in that: The rejector body (1) comprises a bearing support plate (11), a first bearing adjustment plate (12), a protective cover pad (13), a main servo motor (14), a medium speed reject upper cover plate (15), a second bearing adjustment plate (16), a first reset bearing block (17), a second reset bearing block (18), a low speed guide plate (19), a reject end face support rod (110), a second reject guide rail fixing plate (111), a guide rail mounting plate (112), a lower buffer pad (113), a second lower support plate (114), a second reject end guide rail (115), a second reject support block (116), a driven sprocket (117), a first reject end guide rail (118), a driven shaft (119), a first reject driven wheel expansion block (120 ... second reject guide rail mounting plate (112), a lower buffer pad (113), a second lower support plate (114), a second reject end guide rail (115), a second reject support block (116), a driven sprocket (117), a first reject end guide rail (118), a first medium speed rejecting intermediate pad (121), a first medium speed rejecting upper guide rail (122), a first medium speed base plate (123), an intermediate support plate (124), a first lower support plate (125), a first rejecting support block (126), a torque limiter (127), a first lower support rail (128), a first medium speed rejecting lower guide rail (129), a reducer (130), a medium speed return plate (131), a return guide rail (132), a second medium speed base plate (133), a driving sprocket (134), a first rejecting bearing seat (135), a main transmission shaft (136), a main synchronous belt (137), a limiter connecting piece (138), a synchronous pulley (139), a tension wheel plate (140), a tension wheel (141), a fixing column (142), a main A synchronous pulley (143), a fixed cushion block (144), a second rejection driven wheel expansion block (145), a rejection pressure block (146), a medium-speed rejection chain (147), a fixed block (148), a limit block (149), a fourth buffer pad (150), a chain mounting plate (151), a push block (152), a third push block buffer pad (153), a first push block buffer pad (154) and a first push block fixed shaft (155); three protective cover pads (13) and a main servo motor (14) are arranged on the medium-speed rejection upper cover plate (15); a bearing support plate (11) and a first bearing adjustment plate (12) are arranged on one side of the medium-speed rejection upper cover plate (15); and a second bearing adjustment plate is arranged on the other side of the medium-speed rejection upper cover plate (15). (16), a first reset bearing block (17), a second reset bearing block (18), a low-speed guide plate (19) and a reject end face support rod (110), the reject end face support rod (110) is connected to the guide rail mounting plate (112) through the second reject guide rail fixing plate (111) below, the guide rail mounting plate (112) is provided with a second reject end guide rail (115) and a first reject end guide rail (118), a first medium-speed base plate (123) is provided below the medium-speed reject upper cover plate (15) through the medium-speed reject intermediate pad (121), a first medium-speed reject upper guide rail (122) is provided below the first medium-speed base plate (123), and the first medium-speed base plate (123) is connected to the second medium-speed base plate (133) through the intermediate support plate (124),A driving sprocket (134) and a driven sprocket (117) are respectively arranged on both sides between the first medium-speed base plate (123) and the second medium-speed base plate (133), the driving sprocket (134) is arranged on the main transmission shaft (136), a first rejection bearing seat (135) is arranged at the end of the main transmission shaft (136), a synchronous pulley (139) on the main transmission shaft (136) is connected to a main synchronous pulley (143) through a main synchronous belt (137), a tensioning wheel (141) is arranged on the outer side of the main synchronous belt (137) through a tensioning wheel plate (140) and a fixing column (142), and the driven sprocket (117) is arranged on the outer side of the main synchronous belt (137). The driven shaft (119) is provided with a first rejection driven wheel expansion block (120) and a second rejection driven wheel expansion block (145) at the upper and lower ends of the driven shaft (119), respectively, and a rejection pressure block (146) and a fixed cushion block (144) are respectively provided on both sides of the second rejection driven wheel expansion block (145). A second rejection support block (116) is provided on one side of the bottom of the driven shaft (119). The driving sprocket (134) is connected to the main servo motor (14) through a reducer (130). The lower end of the driving sprocket (134) is also connected to the torque limiting device (138) through a limiter connecting member (138). The first medium-speed base plate (133) is connected to the first medium-speed base plate (133), the first medium-speed rejecting lower guide rails (129) are arranged on both sides of the second medium-speed base plate (133), the first lower support rail (128) is arranged below the second medium-speed base plate (133), the first lower support rail (128) is connected to the return guide rail (132), a medium-speed return plate (131) is arranged below the return guide rail (132), the first lower support rail (128) is arranged on the first lower support plate (125), the second lower support plate (114) is arranged at the end of the first lower support plate (125), the second lower support plate (114) is arranged with a lower buffer pad (113), the first lower support plate (125) ) is provided with a first rejection support block (126) below; the driving sprocket (134) and the driven sprocket (117) are connected via a medium-speed rejection chain (147); the medium-speed rejection chain (147) is connected to a chain mounting plate (151) via a fixed block (148), a limit block (149), and a fourth buffer pad (150); a first push block fixed shaft (155) is installed below the chain mounting plate (151); the first push block fixed shaft (155) is connected to the push block (152) via a first push block buffer pad (154) and a third push block buffer pad (153).

3. The progressive push servo ejector according to claim 2, characterized in that: A switching mechanism motor (156) is installed below the second rejecting support block (116) via a switching mechanism fixing plate (158); a switching mechanism protective cover (157) is arranged outside the switching mechanism motor (156); the switching mechanism motor (156) is connected to a rotating wheel (162); a rejecting wheel (160) is arranged on the rotating wheel (162) via a first rejecting wheel fixing block (161) and a second rejecting wheel fixing block (163); and a thumbwheel protective cover (159) is arranged outside the rejecting wheel (160).

4. The progressive push servo ejector according to claim 2, characterized in that: A pneumatic rejection mechanism rejection block (165) is arranged below the second rejection support block (116); the pneumatic rejection mechanism rejection block (165) is connected to a pneumatic rejection mechanism cylinder (166); a pneumatic rejection mechanism protection fixing box (167) is arranged below the pneumatic rejection mechanism cylinder (166); and a pneumatic rejection mechanism electromagnetic valve (168) is also arranged on the pneumatic rejection mechanism protection fixing box (167).

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