CN216757278U - Automatic pressure spring type high-pressure machine - Google Patents

Abstract

The utility model relates to an automatic pressure spring high-pressure machine. The automatic sorting machine comprises a bearing line, a feeding mechanism, a forced pressing mechanism, a testing mechanism, a sorting mechanism and a material stirring mechanism, wherein the feeding mechanism comprises a material vibrating plate, the material vibrating plate is connected with a discharging sorting channel, and pressure springs are output one by one from an outlet of the discharging sorting channel; the sorting mechanism comprises a sorting sliding block and a sorting driving mechanism; the sorting slide block is provided with an accommodating groove; the sorting driving mechanism drives the sorting sliding block to move between a feeding position and a discharging position; the accommodating groove reaches the input end of the bearing line when the sorting slide block is at the blanking position; the material shifting mechanism is arranged to shift the pressure spring in the accommodating groove of the sorting slide block at the blanking position into the bearing line through the input end of the bearing line. The automatic spring picking device can pick up the pressure springs one by one, and can pick one pressure spring picked up by the sorting mechanism into the bearing line through the material shifting mechanism, so that manual feeding is not needed, the automation degree is improved, and the labor force is reduced.

Description

Automatic pressure spring type high-pressure machine

Technical Field

The utility model relates to an automatic pressure spring strong press.

Background

The compression spring usually needs to be subjected to a strong compression process in the production process. The manual strong pressing operation mode that the pressure spring is manually put into the strong pressing machine is adopted, so that the efficiency is low, and the safety accident that fingers are pressed and injured easily occurs. In order to improve the working efficiency and reduce the safety risk, the strong pressure sorting device for the spring disclosed in the chinese patent publication CN 111871853 a adopts a flow line operation mode to improve the efficiency. However, in the prior art, the springs still need to be manually loaded, that is, the pressure springs are placed into the placing discs of the conveying belt one by one in a manual mode, the labor force is still increased, and the comprehensive automation cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic pressure spring strong press machine which comprises a bearing line and a feeding mechanism, wherein one end of the bearing line is an input end, the other end of the bearing line is an output end, the direction from the input end to the output end of the bearing line is a feeding direction for conveying pressure springs, the feeding mechanism comprises a material vibrating disc, the material vibrating disc is connected with a discharging sorting channel, and the pressure springs are output one by one from an outlet of the discharging sorting channel; the automatic pressure spring strong press also comprises a sorting mechanism and a material poking mechanism; the sorting mechanism comprises a sorting slide block which moves between an outlet of the discharging sorting channel and an input end of the bearing line and a sorting driving mechanism for driving the sorting slide block to move; the sorting slide block is provided with a containing groove for containing a pressure spring; the sorting driving mechanism drives the sorting sliding block to move between a feeding position and a discharging position; the accommodating groove reaches the outlet of the discharging sorting channel when the sorting slide block is at the feeding position and is communicated with the outlet of the discharging sorting channel, so that the pressure spring output from the outlet of the discharging sorting channel enters the accommodating groove; the accommodating groove reaches the input end of the bearing line when the sorting slide block is at the blanking position and is communicated with the input end of the bearing line; the material shifting mechanism is arranged to shift a pressure spring in a containing groove of the sorting slide block at the blanking position into the bearing line through an input end of the bearing line.

The sorting mechanism can be used for sending the pressure springs from the outlets of the discharging sorting channels to the input end of the bearing line one by one, so that the pressure springs are picked up one by one, and one pressure spring picked up by the sorting mechanism can be shifted into the bearing line through the shifting mechanism, so that subsequent high-pressure and quality test operations are facilitated, manual feeding is not needed, the automation degree is improved, and the labor force is reduced.

Drawings

FIG. 1 shows a perspective view of the present invention;

FIGS. 2 to 4 are perspective views of three different angles of the present invention after the vibration plate is hidden;

FIGS. 5 and 6 are exploded perspective views of the vibrating plate of the present invention at two different angles;

FIG. 7 shows a front view of the present invention with the vibratory tray hidden;

FIG. 8 shows a top view of the present invention with the vibratory tray concealed;

FIG. 9 shows a perspective view of the upper slide and slide drive mechanism of the present invention;

FIG. 10 shows a perspective view of the hold up mechanism of the present invention;

FIG. 11 shows a perspective view of the sorting mechanism of the present invention;

figures 12 and 13 show perspective views of the setting mechanism of the utility model at two different angles, respectively;

FIGS. 14 and 15 show exploded perspective views at two different angles of the setting mechanism of the present invention;

fig. 16 to 23 show schematic views of the working process of the present invention.

Reference numerals:

the test device comprises a 10 bearing line, an 101 bearing line input end, a 102 bearing line output end, a 103 primary forced pressing station, a 104 primary forced pressing post rest station, a 105 secondary forced pressing station, a 106 secondary forced pressing post rest station, a 107 test station and a 108 test post rest station;

20, pressing a spring;

30 a pressure mechanism;

40 a testing mechanism;

50 vibrating trays, 501 discharging and sequencing channels and 502 discharging and sequencing channels;

the 60 sorting mechanism, the 601 sorting sliding block, the 602 sorting driving mechanism and the 603 accommodating groove;

70 material shifting mechanisms, 701 material shifting bases, 702 material shifting transverse sliding plates, 703 material shifting longitudinal sliding plates, 704 material shifting transverse driving mechanisms, 705 material shifting longitudinal driving mechanisms, 706 material shifting forks, 707 material shifting transverse guide rails, 708 material shifting longitudinal guide rails and 709 material shifting slots;

80 blanking mechanisms, 801 upper slide, 802 lower slide and 803 slide driving mechanisms;

90 hold up the material mechanism, 901 hold up the material fork, 902 hold up the material actuating mechanism, 903 holds up the material fork groove.

Detailed Description

The present application is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 15, an automatic compression spring compression machine includes a carrier line 10, a feeding mechanism, a compression mechanism 30 for compressing a compression spring 20, and a testing mechanism for testing the quality of the compressed spring 20 after being compressed, one end of the carrier line 10 is an input end 101, the other end of the carrier line is an output end 102, a direction from the input end 101 to the output end 102 of the carrier line is a feeding direction for conveying the compression spring 20, a compression station and a testing station are successively arranged along the feeding direction, the compression mechanism 30 is arranged at the compression station, the testing mechanism 40 is arranged at the testing station, the feeding mechanism includes a vibration disc 50, the vibration disc 50 is connected with a discharging sorting channel 501, and the compression springs 20 are output one by one from an outlet 502 of the discharging sorting channel;

the automatic pressure spring strong press machine also comprises a sorting mechanism 60 and a material poking mechanism 70;

the sorting mechanism 70 comprises a sorting slide 601 moving between the outlet 502 of the outfeed sorting channel and the input 101 of the carrier line and a sorting drive mechanism 602 for driving the sorting slide 601 to move;

the sorting slide block 601 is provided with an accommodating groove 603 for accommodating a pressure spring 20;

the sorting driving mechanism 602 drives the sorting slide 601 to move between a loading position and a unloading position;

the accommodating groove 603 reaches the outlet 502 of the discharging sorting channel when the sorting slide block 601 is at the feeding position and is communicated with the outlet 502 of the discharging sorting channel, so that the compressed spring 20 output from the outlet 502 of the discharging sorting channel enters the accommodating groove 603;

the accommodating groove 603 reaches the input end 101 of the carrier line when the sorting slide block 601 is at the blanking position and is communicated with the input end 101 of the carrier line;

the setting mechanism 70 is provided for setting the compression spring 20 in the receiving groove 603 of the sorting slide in the feeding position into the carrier wire 10 via the input end 101 of the carrier wire.

This technical scheme can deliver to the input that bears the weight of the line one by one the pressure spring that comes from the export of ejection of compact sequencing passageway through adopting letter sorting mechanism, borrow this in order to realize picking up the pressure spring one by one to can dial into the line that bears the weight of through dialling the pressure spring that the material mechanism picked up, so that subsequent high pressure and quality test operation need not artifical material loading, improve degree of automation, reduce the labour.

In the embodiment, the forced compression mechanism 30, the testing mechanism 40 and the material vibrating disc 50 all adopt the prior art; the pressure mechanism can compress the pressure spring to a limit state; the testing mechanism can test whether the force value of the compressed spring after being forced meets the design requirement, so that the quality of the compressed spring after being forced is judged; the material dish that shakes can sort unordered pressure spring.

The material shifting mechanism 70 comprises a material shifting base 701, a material shifting transverse sliding plate 702, a material shifting longitudinal sliding plate 703, a material shifting transverse driving mechanism 704, a material shifting longitudinal driving mechanism 705 and a material shifting fork 706 which are fixed relative to the bearing line 10;

a material shifting transverse guide rail 707 is arranged on the material shifting base 701, a material shifting longitudinal guide rail 708 is arranged on the material shifting transverse sliding plate 702, the length direction of the material shifting transverse guide rail 707 is parallel to the feeding direction, the length direction of the material shifting longitudinal guide rail 708 is perpendicular to the length direction of the material shifting transverse guide rail 707, the material shifting transverse sliding plate 702 can be slidably mounted on the material shifting transverse guide rail 707, the material shifting longitudinal sliding plate 703 can be slidably mounted on the material shifting longitudinal guide rail 708, and the material shifting fork 706 is fixedly mounted on the material shifting longitudinal sliding plate 703;

the material shifting fork 706 is provided with a material shifting fork groove 709 which can contain the pressure spring 20;

the material shifting longitudinal driving mechanism 705 is arranged on the material shifting transverse sliding plate 702 and is used for driving the material shifting longitudinal sliding plate 703 to slide along the material shifting longitudinal guide rail 708, so that the material shifting fork 706 moves close to or away from the carrier wire 10, in the embodiment, the material shifting fork 706 moves close to the carrier wire 10 and the pressure spring 20 is placed in the material shifting fork groove 709, so that the material shifting fork 706 can fork the pressure spring 20, and then the material shifting fork 706 is separated from the pressure spring 20 when the material shifting fork 706 moves away from the carrier wire 10;

the material shifting transverse driving mechanism 704 is disposed on the material shifting base 701 and is used for driving the material shifting transverse sliding plate 702 to slide along the material shifting transverse guide rail 707, so that the material shifting fork 706 can shift the pressure spring 20 placed in the material shifting fork groove 709 along the feeding direction.

This technical scheme realizes ordering about the setting fork through setting out the vertical actuating mechanism of material and is close to or keeps away from the load-bearing line and get or break away from the load-bearing line and sort the pressure spring on the slider with the fork, drives the pressure spring removal of being got by the setting fork when ordering about the setting fork to remove along the pay-off direction through the horizontal actuating mechanism of setting out the material to remove the pressure spring to different stations. Borrow this in order to transport the pressure spring on letter sorting slider and the carrier line through dialling material mechanism, need not to adopt belt conveyor to construct, and can guarantee the accuracy control of pressure spring transportation position.

The output end 101 of the bearing line is provided with a blanking mechanism 80;

the blanking mechanism 80 comprises an upper slide 801 and a lower slide 802 for receiving the pressure spring 20 falling from the output end 102 of the carrying wire, wherein the upper slide 801 is positioned above the lower slide 802 along the falling direction of the pressure spring 20;

the lower slide 802 is fixed relative to the carrier wire 10;

the upper slide 801 slides relative to the carrier wire 10;

the blanking mechanism 80 further includes a slide driving mechanism 803;

the feeding port of the lower slide 802 is positioned on the falling path of the pressure spring 20;

the slide driving mechanism 803 drives the upper slide 801 to slide between a shielding position and a avoiding position;

the feeding port of the upper slide 801 is located on the falling path of the pressure spring 20 when the upper slide 801 is at the shielding position to shield the feeding port of the lower slide 802, so that the pressure spring 20 falling from the output end 102 of the carrying wire falls into the feeding port of the upper slide 801;

the inlet of the upper slide 801 is away from the falling path of the compression spring 20 when the upper slide 801 is in the off position, and the inlet of the lower slide 802 is exposed, so that the compression spring 80 falling from the output end 102 of the carrier wire falls into the inlet of the lower slide 802.

This technical scheme undertakes the blanking respectively through adopting last slide and gliding ladder, borrows this to sort the pressure spring, sorts for example qualified and unqualified pressure spring of quality. Meanwhile, the slide driving mechanism is adopted to drive the position of the upper slide to be switched so that the pressure spring output from the output end of the bearing wire can selectively fall into the upper slide or the lower slide. The device is simple in structure and convenient to implement, and the quality condition of the compressed spring to be output is obtained after the compressed spring is tested by matching with the testing mechanism, so that the compressed spring to be output can fall into the upper slide or the lower slide.

A material supporting mechanism 90 for supporting the pressure spring 20 in the strong pressure station is arranged at the strong pressure station;

the material supporting mechanism 90 comprises a material supporting fork 901 and a material supporting driving mechanism 902;

the material holding fork 901 slides relative to the carrier line 10, and the sliding direction of the material holding fork 901 is perpendicular to the feeding direction;

the material holding fork 901 is provided with a material holding fork groove 903 which can contain the pressure spring 20;

the material holding driving mechanism 902 is used for driving the material holding fork 901 to slide between a material holding position and a material removing position close to or far away from the carrier line 10;

when the material holding fork 901 is at the material holding position, the material holding fork is inserted into the carrier line 10, so that the pressure spring 20 at the high pressure station is placed into the material holding fork groove 903, and thus the material holding fork 901 is used for forking the pressure spring 20;

when the material holding fork 901 is at the stripping position, the material holding fork is pulled away from the carrier line 10, so that the material holding fork groove 903 is stripped from the pressure spring 20 in the strong pressure station.

This technical scheme holds up the material mechanism in order to hold up the pressure spring before the pressure spring is forced, avoid the pressure spring to dislocate at the forced pressure in-process and lead to the forced pressure operation failure, adopt simultaneously to hold up the motion that material actuating mechanism ordered about holding up the material fork so that optionally hold up the material and take off the material, break away from the pressure spring so that to hold up the material fork when need not hold up the pressure spring from this, in order to avoid holding up the transport that the material fork hinders the pressure spring, reasonable in design, the implementation of being convenient for.

In this embodiment, the material holding fork 903 is located below the material shifting fork 706, and the material holding fork 903 is used to hold the bottom of the pressure spring 20.

A holding mechanism 90 for holding the compression spring 20 in the test station is also provided at the test station. The material supporting mechanism arranged at the test station is the same as the material supporting mechanism arranged at the forced pressure station in structure, and the detailed description is omitted here.

This technical scheme is through setting up in experimental station department and holding up the material mechanism in order to hold up the pressure spring before the pressure spring is by the compression test, avoid the pressure spring to dislocate in the compression test process and lead to experimental operation failure, adopt simultaneously to hold up the material actuating mechanism and order about the motion of holding up the material fork so that selectively hold up the material and take off the material, break away from the pressure spring when not needing to hold up the material fork from this, in order to avoid holding up the transport that the material fork hinders the pressure spring, reasonable in design, be convenient for implement.

The sliding direction of the upper slide 801 and the sliding direction of the lower slide 802 are crossed, so that materials can be discharged in different directions;

the sliding direction of the upper slide 801 is parallel to the feeding direction;

the material-pulling mechanism 70 and the material-holding mechanism 90 are separately arranged at two sides of the carrying line 10;

the material shifting mechanism 70 is also configured to shift the compressed spring 20 on the carrier wire 10 to a strong pressure station and a test station, and finally shift the compressed spring 20 on the carrier wire 10 away from the carrier wire 10 from the output end 102 of the carrier wire;

the bearing line 10 is groove-shaped;

the material shifting transverse driving mechanism 704, the material shifting longitudinal driving mechanism 705, the sorting driving mechanism 602, the slide driving mechanism 803 and the material supporting driving mechanism 902 are all cylinders;

a plurality of material shifting fork grooves 709 are arranged, and all the material shifting fork grooves 709 are distributed at intervals along the feeding direction;

the moving direction of the sorting slide block 601 is parallel to the length direction of the material poking longitudinal guide rail 708;

the length direction of the discharging sorting channel 501 is parallel to the feeding direction, and the vibration of the vibration disc 50 can drive the compression springs 20 arranged on the discharging sorting channel 501 to convey along the feeding direction;

the outlet 502 of the outfeed sequencing channel is offset from the input end 101 of the carrier line in the direction of movement of the sorting slide 601.

In this embodiment, there are 2 strong pressure mechanisms 30, 6 stations are arranged on the carrier line 10, and the 6 stations are distributed at equal intervals, and are an input end 101 of the carrier line, a first strong pressure station 103, a first post-strong pressure rest station 104, a second strong pressure station 105, a second post-strong pressure rest station 106, a test station 107, a test post-rest station 108, and an output end 102 of the carrier line in sequence along the feeding direction, and 1 strong pressure mechanism 30 is respectively configured at the first strong pressure station 103 and the second strong pressure station 105. In the present embodiment, the compression spring 20 is shown as a tower spring.

As shown in fig. 12, there are 7 material shifting fork grooves 709 on the material shifting fork 706, the 7 material shifting fork grooves 709 are distributed at equal intervals along the feeding direction, and the interval between two adjacent material shifting fork grooves 709 is equal to the interval between two adjacent stations.

As shown in fig. 10, there are 3 material supporting fork grooves 903 on the material supporting fork 901, the 3 material supporting fork grooves 903 are distributed at equal intervals along the feeding direction, and the interval between two adjacent material supporting fork grooves 903 is equal to the interval between two adjacent stations.

The working process of the present invention can be seen as follows.

As shown in fig. 16, the sorting slide 601 is in the loading position, in which the accommodating groove 603 is communicated with the outlet 502 of the discharging and sorting channel, and a compressed spring 20 discharged from the outlet 502 of the discharging and sorting channel enters the accommodating groove 603 of the sorting slide 601;

as shown in fig. 17, the sorting driving mechanism 602 drives the sorting slider 601 to move from the loading position to the unloading position, and at this time, the accommodating groove 603 is communicated with the input end 101 of the carrier line;

as shown in fig. 18, the material shifting fork 706 is driven by the material shifting longitudinal driving mechanism 705 to move close to the carrier wire 10, so that the material shifting fork groove 709 of the material shifting fork forks the compressed spring 20 in the accommodating groove 603 of the sorting slider, and of course, during the movement of the material shifting fork 706 close to the carrier wire 10, the compressed springs 20 at other stations on the carrier wire 10 are also forked by the material shifting fork grooves 903 at corresponding positions;

as shown in fig. 19, the kick-off fork 706 is driven by the kick-off transverse driving mechanism 704 to move in the feeding direction (i.e., to the left in the drawing);

the pressure spring 20 in situ in the accommodating groove 603 of the sorting slide block is driven by the shifting fork 706 to leave the accommodating groove 603 and reach the primary pressure station 103,

the pressure spring 20 in situ at the primary forced compression station 103 is driven by the kick-off fork 706 to leave the primary forced compression station 103 and reach the post-primary forced compression rest station 104;

the pressure spring 20 originally positioned at the post-primary-forced rest station 104 is driven by the shifting fork 706 to leave the post-primary-forced rest station 104 and reach the secondary forced rest station 105;

the pressure spring 20 in situ at the secondary high-pressure station 105 is driven by the shifting fork 706 to leave the secondary high-pressure station 105 and reach the post-secondary high-pressure rest station 106;

the pressure spring originally positioned at the post-secondary-high-pressure rest station 106 is driven by the shifting fork 706 to leave the post-secondary-high-pressure rest station 106 and reach the test station 107;

the pressure spring 20 in situ at the test station 107 is driven by the shifting fork 706 to leave the test station 107 and reach the post-test rest station 108;

the pressure spring 20 originally located at the post-test rest station 108 is driven by the kick-off fork 706 to leave the post-test rest station 108 and move out of the output end 102 of the carrier wire;

as shown in fig. 22, the compressed spring 20 moved out of the output end 102 of the carrier wire by the material shifting fork 706 falls downward under the action of gravity, and at this time, because the upper slide 801 is in the shielding position, the compressed spring 20 moved out of the output end of the carrier wire by the material shifting fork falls into the material inlet of the upper slide 801, and then slides along the upper slide 801;

as shown in fig. 23, when the slide driving mechanism 803 drives the upper slide 801 to slide from the shielding position to the shielding position, the material inlet of the lower slide 802 is exposed, and the pressure spring 20 moved out of the output end of the carrying line by the material shifting fork falls into the material inlet of the lower slide 802, and then slides along the lower slide 802;

in this embodiment, the discharge hole of the upper slide 801 and the discharge hole of the lower slide 802 may be respectively provided with corresponding material receiving frames (not shown in the figure) to receive the pressure spring 20;

as shown in fig. 20, after fig. 19 is completed, the material-shifting fork 706 is driven by the material-shifting longitudinal driving mechanism 705 to move away from the carrier wire 10, and each material-shifting fork groove 709 of the material-shifting fork is disengaged from the original forking pressure spring 20;

as shown in fig. 21, the material supporting fork 901 is driven by the material supporting driving mechanism 902 to slide from the material release position to the material supporting position, so that the material supporting fork groove 903 of the material supporting fork forks the compressed spring 20 located in the primary pressure strengthening station, and then the pressure strengthening mechanism 30 is started to complete the pressure strengthening operation of the compressed spring supported in the primary pressure strengthening station; after the forced compression operation is completed, the material supporting fork 901 is driven to return to the material releasing position by the material supporting driving mechanism 902, so that the material supporting fork 901 can be released from the pressure spring 20.

Claims (3)

1. The utility model provides an automatic strong press of pressure spring, is including bearing line and feeding mechanism, and the one end that should bear the line is the input, and the other end that should bear the line is the output, and from the input that bears the line toward the direction of output for the pay-off direction that is used for carrying the pressure spring, this feeding mechanism is including the charging tray that shakes, should shake the charging tray and be connected with ejection of compact sequencing channel, and the pressure spring exports its characterized in that one by one from the export of ejection of compact sequencing channel:

the automatic pressure spring strong press also comprises a sorting mechanism and a material poking mechanism;

the sorting mechanism comprises a sorting slide block which moves between an outlet of the discharging sorting channel and an input end of the bearing line and a sorting driving mechanism for driving the sorting slide block to move;

the sorting slide block is provided with a containing groove for containing a pressure spring;

the sorting driving mechanism drives the sorting sliding block to move between a feeding position and a discharging position;

the accommodating groove reaches the outlet of the discharging sorting channel when the sorting slide block is at the feeding position and is communicated with the outlet of the discharging sorting channel, so that the pressure spring output from the outlet of the discharging sorting channel enters the accommodating groove;

the accommodating groove reaches the input end of the bearing line when the sorting slide block is at the blanking position and is communicated with the input end of the bearing line;

the material shifting mechanism is arranged to shift a pressure spring in a containing groove of the sorting slide block at the blanking position into the bearing line through an input end of the bearing line.

2. The automatic pressure spring strong press machine according to claim 1, characterized in that:

the material shifting mechanism comprises a material shifting base, a material shifting transverse sliding plate, a material shifting longitudinal sliding plate, a material shifting transverse driving mechanism, a material shifting longitudinal driving mechanism and a material shifting fork;

the material shifting base is provided with a material shifting transverse guide rail, the material shifting transverse sliding plate is provided with a material shifting longitudinal guide rail, the length direction of the material shifting transverse guide rail is parallel to the feeding direction, the length direction of the material shifting longitudinal guide rail is perpendicular to the length direction of the material shifting transverse guide rail, the material shifting transverse sliding plate can be slidably arranged on the material shifting transverse guide rail, the material shifting longitudinal sliding plate can be slidably arranged on the material shifting longitudinal guide rail, and the material shifting fork is fixedly arranged on the material shifting longitudinal sliding plate;

the shifting fork is provided with a shifting fork groove which can contain a pressure spring;

the material shifting longitudinal driving mechanism is arranged on the material shifting transverse sliding plate and used for driving the material shifting longitudinal sliding plate to slide along the material shifting longitudinal guide rail, so that the material shifting fork moves close to or far away from the bearing line;

the material shifting transverse driving mechanism is arranged on the material shifting base and used for driving the material shifting transverse sliding plate to slide along the material shifting transverse guide rail.

3. The automatic pressure spring strong press machine according to claim 2, characterized in that:

the output end of the bearing line is provided with a blanking mechanism;

the blanking mechanism comprises an upper slide and a lower slide which are used for receiving a pressure spring falling from the output end of the bearing wire, wherein the upper slide is positioned above the lower slide along the falling direction of the pressure spring;

the lower slide is fixed relative to the bearing line; the upper slide slides relative to the bearing line; the blanking mechanism also comprises a slide driving mechanism;

the material inlet of the lower slide is positioned on the falling path of the pressure spring;

the slide driving mechanism drives the upper slide to slide between a shielding position and an avoiding position;

the feeding port of the upper slide is positioned on the falling path of the pressure spring when the upper slide is positioned at the shielding position to shield the feeding port of the lower slide, so that the pressure spring falling from the output end of the bearing line falls into the feeding port of the upper slide;

the material inlet of the upper slide is separated from the falling path of the pressure spring when the upper slide is at the avoiding position, and the material inlet of the lower slide is exposed, so that the pressure spring falling from the output end of the bearing wire falls into the material inlet of the lower slide.

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