Shaft pressing unit and automatic shaft inserting equipment

Abstract

The invention relates to a shaft pressing unit and automatic shaft inserting equipment, and belongs to the technical field of shaft inserting devices. A shaft pressing unit is used for pressing and inserting a shaft pin onto a product and comprises an equipment pedestal provided with a back plate and a top plate, a driving buffering mechanism and a driven buffering mechanism are installed on one side of the back plate in a sliding mode, a driving mechanism is installed on the top plate, and a pin fixing mechanism controlled and connected by the driving mechanism is installed on the driving buffering mechanism. A switching feeding mechanism is installed below the driven buffering mechanism and communicates with an external shaft feeding mechanism. According to the shaft pressing unit and the automatic shaft inserting equipment, automatic feeding and automatic pressing and inserting of shaft pins are achieved, the shaft feeding mechanism is used for automatic feeding and supplementing of the shaft pins, and the shaft pressing unit achieves accurate and stable pressing of the shaft pins into products through the two buffering mechanisms, the pin fixing mechanism and the switching feeding mechanism.

Description

Technical Field

[0001] The present invention relates to a pressing shaft unit and an automatic shaft inserting device, belonging to the technical field of shaft inserting devices. Background Art

[0002] In modern manufacturing, the assembly efficiency and precision of small components are crucial for improving production quality and reducing costs. For some small components that need to install shaft pins, the traditional manual assembly method has problems such as low efficiency and insufficient precision. In addition, the structural fit precision of the existing pressing part is insufficient, and most of them use cylinder drive to press down, the pressure is uncontrollable, and the products are prone to defective breakage.

[0003] Therefore, it is of great practical significance to develop a pressing shaft and inserting device that can realize automatic feeding and automatic pressing of shaft pins. Summary of the Invention

[0004] The present invention aims to solve the above-mentioned various problems, and further provides a pressing shaft unit and an automatic shaft inserting device with high precision, high efficiency and high automation degree.

[0005] To solve the above problems, the technical solutions adopted by the present invention are as follows: A pressing shaft unit for pressing and inserting a shaft pin onto a product, including an equipment pedestal, a back plate and a top plate installed on the equipment pedestal. A driving buffer mechanism and a driven buffer mechanism are slidably installed on one side of the back plate. A driving mechanism is installed on the top plate. A needle fixing mechanism controlled and connected by the driving mechanism is installed on the driving buffer mechanism. A switching feeding mechanism is installed below the driven buffer mechanism, and the switching feeding mechanism is communicated with an external shaft feeding mechanism.

[0006] Further, the driving buffer mechanism and the driven buffer mechanism are respectively installed on the longitudinal slide rails of the back plate through sliders, and the driving buffer mechanism is located above the driven buffer mechanism; the driving buffer mechanism has two buffer blocks, the inner sides of the two buffer blocks are adaptively connected to the longitudinal slide rails of the back plate through sliders, and the outer sides are connected to the needle fixing mechanism through buffer block fixing plates; the driven buffer mechanism includes a positioning seat and two ejector blocks installed in the positioning seat and corresponding to the two buffer blocks of the driving buffer mechanism above. The ejector block is provided with a counterbore for adapting to the lower end of the stud, and the buffer block is provided with a through hole for passing through the upper end of the stud. A spring that abuts against the end faces of the buffer block and the ejector block is sleeved on the middle part of the stud; a thimble channel and an accommodating groove are respectively opened on the bottom plate of the positioning seat, and a lower limit block that abuts against the positioning seat is provided below the longitudinal slide rail of the back plate, so as to provide a lower limit for the driven buffer mechanism.

[0007] Further, the driving mechanism includes a driving motor, a belt transmission assembly, a lead screw slider assembly driven and controlled by the belt transmission assembly, and a ejector rod. The driving motor drives the lead screw to rotate via the belt transmission assembly. The slider is fixedly connected to the ejector rod, and the end of the ejector rod is connected to the needle fixing mechanism.

[0008] Further, the needle fixing mechanism includes a fixing base. The upper part of the fixing base is fixedly connected to the ejector rod of the driving mechanism, and the back side is fixedly connected to the buffer block fixing plate of the active buffer mechanism. A top needle holder is installed below the fixing base. A top needle is installed on the top needle holder. The top needle is opposite to the position of the top needle channel on the bottom positioning seat plate. A pressure sensor is arranged above the top needle.

[0009] Further, the switching feeding mechanism includes a top needle holding plate and a press feeding plate arranged in parallel, one above the other, and a pair of slider covers arranged between them. A switching feeding block is installed between the two slider covers. A material passing channel penetrating through the upper and lower parts is opened on the switching feeding block. One side of it is driven and controlled by a switching air cylinder and can telescopically switch within the channel between the two slider covers. A top needle holding block is installed above the top needle holding plate. The top needle holding block has a top needle channel, and its upper end is communicated with the external shaft feeding mechanism through a pipeline, and its lower end is communicated with the material passing channel of the top needle holding plate. The press feeding plate has a material passing channel, and this material passing channel is communicated with the inserted shaft guide sleeve installed at the bottom. The top needle holding block is located in the accommodating groove of the positioning seat.

[0010] Further, the switching feeding block has a material receiving position and a material delivering position. At the material receiving position, the material passing channel of the switching feeding block, the material passing channel of the top needle holding plate, and the material passing channel of the top needle holding block are communicated, so that the shaft pin enters the inside of the switching feeding block from the shaft feeding mechanism. At the material delivering position, the material passing channel of the switching feeding block, the material passing channel of the press feeding plate, and the inserted shaft guide sleeve are communicated, so as to facilitate the shaft pin to enter the product inserted shaft position from the inside of the switching feeding block.

[0011] Further, the shaft feeding mechanism includes a circular vibration feeding tray and a shaft discharging track arranged at its discharging end. The end of the shaft discharging track conveys the shaft pin into the top needle holding block of the switching feeding mechanism through a switching blowing assembly.

[0012] Further, the switching and blowing assembly includes a switching block controlled by the output of a cutting cylinder, an outlet fixing plate arranged at the front end of the switching block and having two outlet connectors, and a nozzle fixing plate arranged at the rear end of the switching block and having two blowing nozzles. The outlet connectors are communicated to the thimble holding block of the switching and feeding mechanism via pipelines. Both the switching block and the outlet fixing plate are provided with two pin channels adapted to the shaft discharging track. The switching block, under the control of the cutting cylinder, has two position states of receiving material and discharging material. When in the receiving position, the switching block is aligned and communicated with the shaft discharging track. When in the discharging position, the switching block is aligned and communicated with the two pin channels of the outlet fixing plate and the outlet connectors. The cutting cylinder is used to drive the switching block to move up and down to respectively complete receiving and discharging materials. The two blowing nozzles of the nozzle fixing plate are communicated with an external air source and are used to blow the two pins in the switching block into the pin channels of the outlet fixing plate and the outlet connectors during discharging, and finally reach the switching and feeding mechanism through the pipelines at the front end of the outlet connectors.

[0013] An automatic shaft inserting device includes a rotary platform for carrying products, and a product inlet and outlet unit, a flipping unit, a pressing shaft unit, a height measuring unit, and a defective product discharging unit arranged around the rotary platform. The product inlet and outlet unit has two functions. On the one hand, it takes out the products to be inserted with shafts from the trays and places them on the rotary platform. On the other hand, it takes back the products that have completed shaft insertion from the rotary platform and places them in the trays. The flipping unit is used to flip the products, the height measuring unit is used to detect the height of the inserted pins after pressing, and the defective product discharging unit is used to sort out defective products and discharge them.

[0014] The pressing shaft unit of the present invention realizes automatic feeding and replenishment of pins and precise and efficient pressing and insertion of pins. Among them, the shaft feeding mechanism is used for automatic feeding and replenishment of pins, which is more accurate than traditional manual feeding, avoids misfeeding, and is more efficient and time-saving. The thimble is pressed down by a servo motor, and at the same time, the connection between the two buffer mechanisms through the spring stud ensures the flexible buffering of the entire pressing shaft process of the product and avoids the impact damage to the product caused by the traditional cylinder pressing. The switching and feeding mechanism realizes precise and rapid feeding of pins, further improving the production accuracy and efficiency. Description of the Drawings

[0015] Figure 1 : Structural schematic diagram of the pressing shaft unit in the first embodiment (excluding the shaft feeding mechanism); Figure 2 : Structural schematic diagram of the active buffer mechanism and the driven buffer mechanism; Figure 3 : Structural schematic diagram of the driving mechanism and the needle fixing mechanism; Figure 4 : Structural schematic diagram of the switching and feeding mechanism; Figure 5 : Structural schematic diagram of the shaft feeding mechanism; Figure 6 : Schematic diagram of the switching and blowing component structure; In the figure, 10 is the equipment pedestal, 11 is the back plate, 12 is the top plate, 13 is the lower limit block, 20 is the active buffer mechanism, 21 is the buffer block, 22 is the buffer block fixing plate, 30 is the driven buffer mechanism, 31 is the positioning seat, 311 is the ejector pin channel, 312 is the accommodating groove, 32 is the ejecting block, 40 is the driving mechanism, 41 is the driving motor, 42 is the belt drive assembly, 43 is the ejector rod, 50 is the needle fixing mechanism, 51 is the fixing seat, 52 is the ejector pin holder, 53 is the ejector pin, 54 is the pressure sensor, 60 is the switching feeding mechanism, 61 is the ejector pin holding plate, 62 is the press feeding plate, 63 is the slider cover plate, 64 is the switching feeding block, 65 is the switching cylinder, 66 is the ejector pin holding block, 67 is the insertion shaft guide sleeve, 70 is the shaft feeding mechanism, 71 is the circular vibration feeding tray, 72 is the shaft discharging track, 80 is the stud, 81 is the spring, 90 is the switching and blowing component, 91 is the cutting cylinder, 92 is the switching block, 93 is the outlet joint, 94 is the outlet fixing plate, 95 is the blowing nozzle, 96 is the nozzle fixing plate. Detailed implementation mode

[0016] The present invention will be described in detail below with reference to the accompanying drawings.

[0017] Embodiment 1 A pressing shaft unit for automatically inserting a shaft pin onto a product, such as Figure 1 shown, includes an equipment pedestal 10 and an active buffer mechanism 20, a driven buffer mechanism 30, a driving mechanism 40, a needle fixing mechanism 50 and a switching feeding mechanism 60 disposed on the equipment pedestal 10. The switching feeding mechanism 60 is connected to an external shaft feeding mechanism 70 to realize supplementary feeding of the shaft pin.

[0018] The equipment pedestal 10 has a back plate 11 and a top plate 12. A pair of longitudinal slide rails are installed on the back plate 11 of the equipment pedestal 10. The active buffer mechanism 20 is disposed above the driven buffer mechanism 30. The two buffer mechanisms are respectively slidably connected to the longitudinal slide rails of the back plate 11 through sliders.

[0019] Such as Figure 2As shown, the active buffer mechanism 20 includes two buffer blocks 21. The inner sides of the two buffer blocks 21 are connected to the longitudinal slide rails of the back plate 11 via sliders, and the outer sides of the two buffer blocks 21 are connected to the needle fixing mechanism 50 via buffer block fixing plates 22. The driven buffer mechanism 30 includes a positioning seat 31. Two ejector blocks 32 opposite to the two buffer blocks 21 of the active buffer mechanism 20 are arranged on the positioning seat 31. The ejector blocks 32 are provided with counterbores for adapting to the lower ends of the stud bolts 80, and the buffer blocks 21 are provided with through holes for passing through the upper ends of the stud bolts 80. Springs 81 respectively abutted against the end faces of the buffer blocks 21 and the ejector blocks 32 are sleeved on the middle parts of the stud bolts 80. Thimble channels 311 and accommodation grooves 312 are respectively formed on the bottom plate of the positioning seat 31. A lower limit block 13 abutted against the positioning seat 31 is arranged below the longitudinal slide rail of the back plate 11, so as to provide a lower limit for the driven buffer mechanism 30.

[0020] As Figure 3 shown, the driving mechanism 40 is installed on the top plate 12 of the equipment pedestal 10, and its structure includes a driving motor 41, a belt transmission assembly 42, a lead screw slider assembly driven and controlled by the belt transmission assembly 42, and a push rod 43. The driving motor 41 drives the lead screw to rotate via the belt transmission assembly 42. When the lead screw rotates, it drives the slider adapted to it to move. The slider is fixedly connected to the push rod 43, and the end of the push rod 43 is connected to the needle fixing mechanism 50.

[0021] As Figure 3 shown, the needle fixing mechanism 50 includes a fixing seat 51. The upper part of the fixing seat 51 is fixedly connected to the push rod 43 of the driving mechanism 40, and the back side is fixedly connected to the buffer block fixing plate 22 of the active buffer mechanism 20. A thimble holder 52 is installed below the fixing seat 51. A thimble 53 is installed on the thimble holder 52. The thimble 53 is used for penetrating downward through the thimble channel 311 on the bottom plate of the positioning seat 31. A pressure sensor 54 is arranged above the thimble 53, and the thimble pressure value is monitored in real time through the pressure sensor 54.

[0022] As Figure 4As shown, the switching feeding mechanism 60 includes a thimble holding plate 61 and a press feeding plate 62 which are arranged in parallel, one above the other, and a pair of slider cover plates 63 disposed between them. A switching feeding block 64 is movably installed between the two slider cover plates 63. A material passing channel penetrating through the upper and lower parts is formed on the switching feeding block 64. One side of the switching feeding block 64 is driven and controlled by a switching air cylinder 65 and can telescopically switch within the channel between the two slider cover plates 63. Above the thimble holding plate 61, a thimble holding block 66 is installed. The thimble holding block 66 has a thimble channel, and its upper end is connected to an external shaft feeding mechanism 70 through a pipeline. Its lower end communicates with the material passing channel of the thimble holding plate 61. The press feeding plate 62 has a material passing channel which is connected to an inserted shaft guide sleeve 67 installed at the bottom. The thimble holding block 66 is located in the accommodation groove 312 of the positioning seat 31.

[0023] The switching feeding block 64 has a material receiving position and a material delivering position. At the material receiving position, the material passing channels of the switching feeding block 64, the thimble holding plate 61, and the thimble holding block 66 are in communication, so that the shaft pin enters the interior of the switching feeding block 64 from the shaft feeding mechanism 70. At the material delivering position, the material passing channel of the switching feeding block 64, the material passing channel of the press feeding plate 62, and the inserted shaft guide sleeve 67 are in communication, facilitating the shaft pin to enter the product inserted shaft position from the interior of the switching feeding block 64.

[0024] As Figure 5 shown, the shaft feeding mechanism 70 includes a circular vibrating feeding tray 71 and a shaft discharging track 72 disposed at its discharging end. The end of the shaft discharging track 72 transports the shaft pin into the thimble holding block 66 of the switching feeding mechanism 60 through a switching blowing assembly 90.

[0025] As Figure 6As shown, the switching and blowing component 90 includes a switching block 92 controlled by the output of a cutting cylinder 91, an outlet fixing plate 94 arranged at the front end of the switching block 92 and having two outlet connectors 93, and a nozzle fixing plate 96 arranged at the rear end of the switching block 92 and having two blowing nozzles 95. The outlet connectors 93 are communicated to the thimble holding block 66 of the switching feeding mechanism 60 via pipelines. Both the switching block 92 and the outlet fixing plate 94 are provided with two pin channels adapted to the shaft discharging track 72. The switching block 92 has two position states of receiving materials and discharging materials under the control of the cutting cylinder 91. When the switching block 92 is in the receiving position, it is aligned and communicated with the shaft discharging track 72. When the switching block 92 is in the discharging position, it is aligned and communicated with the two pin channels of the pin outlet fixing plate 94 and the outlet connectors 93. The cutting cylinder 91 is used to drive the switching block 92 to move up and down to respectively complete receiving materials and discharging materials. The two blowing nozzles 95 of the nozzle fixing plate 96 are communicated with an external air source, and are used to blow the two pins in the switching block 92 into the pin channels of the outlet fixing plate 94 and the outlet connectors 93 during discharging, and finally reach the switching feeding mechanism 60 through the pipelines at the front ends of the outlet connectors 93.

[0026] A pressing shaft inserting device according to this embodiment has its working process described as follows: When the rotary platform moves a shaft product to be inserted to the pressing shaft inserting station (below the switching feeding mechanism 60), the driving mechanism 40 drives the needle fixing mechanism 50 and the active buffer mechanism 20 to move downward. Under the connection of a spring 81 and a stud 80, the driven buffer mechanism 30 will also move downward accordingly until the driven buffer mechanism 30 is positioned at the lower limit block 13. At this time, the inserting shaft bushing 67 below the switching feeding mechanism 60 is aligned and communicated with the shaft inserting hole of the product.

[0027] The shaft feeding mechanism 70 feeds the pins into the thimble holding block 66. At this time, the switching feeding block 64 of the switching feeding mechanism 60 is in the receiving position, and the pins will smoothly enter the inside of the switching feeding block 64. Subsequently, the switching cylinder 65 drives the switching feeding block 64 to retract to the feeding position, so that the pins inside the switching feeding block 64 fall into the inserting shaft bushing 67, and this position corresponds to the shaft inserting hole of the product. Subsequently, the switching feeding block 64 resets to the receiving position to repeat receiving materials.

[0028] When the pins reach inside the inserting shaft bushing 67, the driving mechanism 40 controls the needle fixing mechanism 50 and the active buffer mechanism 20 to move downward again. Under the condition that the driven buffer mechanism 30 is limited, the active buffer mechanism 20 compresses the spring 81 downward and approaches the driven buffer mechanism 30. The needle fixing mechanism 50 drives its thimble 53 to move downward until the pins are inserted into the product. After completing the pressing shaft action, the driving mechanism 40 drives the needle fixing mechanism 50, the active buffer mechanism 20 and the driven buffer mechanism 30 to move upward to the initial position state simultaneously.

[0029] Embodiment 2 An automatic shaft inserting device for automatically inserting shaft pins onto products, comprising a rotary platform, and a product loading and unloading unit, a flipping unit, a shaft feeding unit, a pressing unit, a height measuring unit, and a defective product discharging unit arranged around the rotary platform; wherein, the rotary platform is used for transporting products between various processes; the product loading and unloading unit has two functions. On the one hand, it takes out the products to be inserted with shafts from the trays and places them on the rotary platform. On the other hand, it takes back the products that have completed shaft insertion from the rotary platform and places them into the trays. The flipping unit is used for flipping the products. The shaft feeding unit is connected to the pressing unit and is used for transporting shaft pins to the pressing unit. The pressing unit is used for receiving the shaft pins from the shaft feeding unit and pressing and inserting them onto the products. The height measuring unit is used for detecting the height of the shaft pins after pressing and inserting. The defective product discharging unit is used for sorting defective products and discharging them.

[0030] The present invention is not limited to the embodiments discussed above. The above description of the specific embodiments is intended to describe and illustrate the technical solutions involved in the present invention. Obvious transformations, substitutions, or combinations based on the inspiration of the present invention should also be considered to fall within the protection scope of the present invention. The above specific embodiments are used to disclose the best implementation methods of the present invention, so that those of ordinary skill in the art can apply various embodiments and various alternative methods of the present invention to achieve the purpose of the present invention.

Claims

1. A pressing unit, characterized in that, It includes a device pedestal (10), a back plate (11) and a top plate (12) installed on the device pedestal (10). On one side of the back plate (11), an active buffer mechanism (20) and a driven buffer mechanism (30) are slidably installed. A driving mechanism (40) is installed on the top plate (12). On the active buffer mechanism (20), a needle fixing mechanism (50) controlled and connected by the driving mechanism (40) is installed. Below the driven buffer mechanism (30), a switching feeding mechanism (60) is installed, and the switching feeding mechanism (60) is communicated with an external shaft feeding mechanism (70).

2. The pressing shaft unit according to claim 1, wherein the active buffer mechanism (20) and the driven buffer mechanism (30) are respectively installed on the longitudinal slide rails of the back plate (11) through sliders, and the active buffer mechanism (20) is located above the driven buffer mechanism (30); the active buffer mechanism (20) has two buffer blocks (21). The inner sides of the two buffer blocks (21) are adaptively connected to the longitudinal slide rails of the back plate (11) through sliders, and the outer sides are connected to the needle fixing mechanism (50) via a buffer block fixing plate (22); the driven buffer mechanism (30) includes a positioning seat (31) and two ejector blocks (32) installed in the positioning seat (31) and corresponding to the two buffer blocks (21) of the upper active buffer mechanism (20). The ejector block (32) is provided with a counterbore for adapting to the lower end of the stud (80), and the buffer block (21) is provided with a through hole for passing through the upper end of the stud (80). A spring (81) respectively abutting against the end faces of the buffer block (21) and the ejector block (32) is sleeved on the middle part of the stud (80); on the bottom plate of the positioning seat (31), a thimble channel (311) and a receiving groove (312) are respectively opened. Below the longitudinal slide rail of the back plate (11), a lower limit block (13) abutting against the positioning seat (31) is provided, thereby providing a lower limit for the driven buffer mechanism (30).

3. The pressing shaft unit according to claim 2, wherein the driving mechanism (40) includes a driving motor (41), a belt transmission component (42), a screw rod slider component driven and controlled by the belt transmission component (42), and a push rod (43). The driving motor (41) drives the screw rod to rotate via the belt transmission component (42). The slider is fixedly connected to the push rod (43), and the end of the push rod (43) is connected to the needle fixing mechanism (50).

4. The pressing shaft unit according to claim 3, wherein The needle fixing mechanism (50) includes a fixing base (51). The upper part of the fixing base (51) is fixedly connected to the ejector rod (43) of the driving mechanism (40), and the back side is fixedly connected to the buffer block fixing plate (22) of the active buffer mechanism (20). A thimble holder (52) is installed below the fixing base (51), and a thimble (53) is installed on the thimble holder (52). The thimble (53) is opposite to the thimble channel (311) on the bottom plate of the lower positioning base (31). A pressure sensor (54) is arranged above the thimble (53).

5. The pressing shaft unit according to claim 4, wherein The switching feeding mechanism (60) includes a thimble holding plate (61) and a press feeding plate (62) arranged in parallel, one above the other, and a pair of slider covers (63) arranged between them. A switching feeding block (64) is installed between the two slider covers (63). A material passing channel penetrating up and down is formed on the switching feeding block (64). One side of the switching feeding block (64) is driven and controlled by a switching air cylinder (65) and can telescopically switch within the channel between the two slider covers (63). A thimble holding block (66) is installed above the thimble holding plate (61). The thimble holding block (66) has a thimble channel, and its upper end is communicated with an external shaft feeding mechanism (70) through a pipeline, and its lower end is communicated with the material passing channel of the thimble holding plate (61). The press feeding plate (62) has a material passing channel, and this material passing channel is communicated with an inserted shaft guide sleeve (67) installed at the bottom. The thimble holding block (66) is located in the accommodating groove (312) of the positioning base (31).

6. The pressing shaft unit according to claim 5, wherein The switching feeding block (64) has a material receiving position and a material delivering position. In the material receiving position, the material passing channels of the switching feeding block (64), the thimble holding plate (61), and the thimble holding block (66) are communicated, so that the shaft pin enters the inside of the switching feeding block (64) from the shaft feeding mechanism (70). In the material delivering position, the material passing channels of the switching feeding block (64), the press feeding plate (62), and the inserted shaft guide sleeve (67) are communicated, so as to facilitate the shaft pin to enter the product inserted shaft position from the inside of the switching feeding block (64).

7. The pressing shaft unit according to claim 6, wherein The shaft feeding mechanism (70) includes a circular vibration feeding tray (71) and a shaft discharge track (72) arranged at its discharge end. The end of the shaft discharge track (72) conveys the shaft pin into the thimble holding block (66) of the switching feeding mechanism (60) through a switching blowing assembly (90).

8. The pressing shaft unit according to claim 7, wherein The switching and blowing component (90) includes a switching block (92) controlled by the output of a cutting cylinder (91), an outlet fixing plate (94) arranged at the front end of the switching block (92) and provided with two outlet connectors (93), and a nozzle fixing plate (96) arranged at the rear end of the switching block (92) and provided with two blowing nozzles (95). The outlet connector (93) is communicated to the thimble holding block (66) of the switching and feeding mechanism (60) through a pipeline. Both the switching block (92) and the outlet fixing plate (94) are provided with two pin channels adapted to the shaft discharging track (72). The switching block (92) has two position states of receiving materials and discharging materials under the control of the cutting cylinder (91). When the switching block (92) is in the receiving position, it is in alignment and communication with the shaft discharging track (72). When the switching block (92) is in the discharging position, it is in alignment and communication with the two pin channels of the pin outlet fixing plate (94) and the outlet connector (93). The cutting cylinder (91) is used to drive the switching block (92) to move up and down to respectively complete receiving materials and discharging materials. The two blowing nozzles (95) of the nozzle fixing plate (96) are communicated with an external air source and are used to blow the two pins in the switching block (92) into the pin channels of the outlet fixing plate (94) and the outlet connector (93) during discharging, and finally reach the switching and feeding mechanism (60) through the pipeline at the front end of the outlet connector (93).

9. An automatic shaft inserting device, characterized in that it includes a rotary platform for carrying products, and a pressing shaft unit as described in any one of claims 1-8 is arranged on the periphery of the rotary platform.

10. The automatic shaft inserting device as claimed in claim 9, characterized in that a product feeding and discharging unit, a flipping unit, a height measuring unit and a defective discharging unit are also arranged on the periphery of the rotary platform at the same time.

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