Automatic wrench handle and pawl assembling machine

Abstract

The utility model provides an automatic wrench handle and pawl assembling machine which comprises a rotating disc arranged on a rack, and a torsional spring feeding mechanism, a pawl feeding mechanism, a wrench handle feeding mechanism, a combining mechanism, a cutter feeding mechanism, an opening mechanism, a rivet pressing mechanism and a discharging mechanism which are sequentially arranged around the rotating disc at equal intervals. Six jigs are arranged on the turntable and are in one-to-one correspondence with the six mechanisms; the jig comprises a flat plate and a lifting block, the lifting block is provided with a pawl positioning structure and a torsional spring positioning structure, the flat plate is provided with a pawl positioning block on the inner side of the lifting block, and a torsional spring feeding block is arranged on the outer side of the lifting block. According to the automatic assembly jig, all stations for assembling the pulling handle, the pawl and the torsional spring are arranged around the rotating disc, and the pulling handle, the pawl and the torsional spring fixing structure are arranged on the jig, so that feeding and automatic assembly of the torsional spring, the pawl and the pulling handle are achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of riveting production, in particular to an automatic assembly machine for a lever and a ratchet. Background Art

[0002] Before installing the trigger handle on the glue gun, first assemble the trigger handle, ratchet, cutter and torsion spring, and then install the assembly on the gun body of the glue gun.

[0003] At present, there are two ways to realize the automatic riveting assembly of the handle, pawl, cutter and double torsion spring in production. One of them is the assembly line method, along which the torsion spring, pawl, handle and cutter are automatically fed in sequence. After the production line assembles the above four parts, rivets are used for riveting. This production method uses more equipment and occupies a large space, which brings inconvenience to production. The second assembly method is to complete it on a turntable. During the rotation of the turntable, the torsion spring, pawl, handle and cutter are loaded separately, and then the torsion spring and pawl are pushed to the handle assembly position, and riveted and assembled with the cutter and handle. This turntable production method saves space to a certain extent, but it is necessary to set corresponding actuators at each station of the turntable to realize the movement of the torsion spring and pawl, which makes the equipment too cumbersome and bulky, and is also not conducive to the production. Utility Model Content

[0004] In view of this, the utility model aims to provide an automatic assembly machine for a lever handle and a ratchet, so as to realize rapid riveting and fixing of the ratchet, the lever handle and the torsion spring used in the glue gun.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] The automatic assembly machine for a lever and a ratchet comprises a rotating disk arranged on a frame, and the frame is provided with a torsion spring feeding mechanism, a ratchet feeding mechanism, a lever feeding mechanism, a merging mechanism, a cutter feeding mechanism, an opening mechanism, a riveting mechanism and a feeding mechanism in sequence at equal intervals around the rotating disk, and six jigs are provided on the rotating disk corresponding to the torsion spring feeding mechanism, the ratchet feeding mechanism, the lever feeding mechanism, the merging mechanism, the cutter feeding mechanism and the opening mechanism;

[0007] The fixture includes a flat plate and a lifting block arranged through the flat plate, a ratchet positioning structure is provided at the inner end of the top surface of the lifting block, and a torsion spring positioning structure is provided at the outer end of the top surface, a ratchet positioning block is provided at the inner side of the flat plate lifting block, and a torsion spring feeding block is provided at the outer side of the lifting block, the ratchet positioning block and the torsion spring feeding block are directly opposite to and both slide radially along the turntable, the ratchet positioning block is provided with a ratchet fixing structure corresponding to the ratchet on the lifting block, the torsion spring feeding block is provided with a torsion spring fixing structure corresponding to the torsion spring on the lifting block, and the flat plate is provided with a lever positioning structure next to the ratchet positioning block.

[0008] Furthermore, the torsion spring positioning structure includes a torsion spring installation groove arranged at the outer end of the top surface of the lifting block, and a torsion spring positioning pin arranged in the torsion spring installation groove, and a spring seat is respectively arranged at the front and rear positions of the torsion spring positioning pin at the bottom of the torsion spring installation groove, and the width of the spring seat corresponds to the diameter of the torsion spring positioning pin;

[0009] The torsion spring fixing structure comprises first positioning grooves protruding from the upper and lower ends of the inner side of the torsion spring feed block, each accommodating a spring coil of the double torsion spring, and torsion spring pressure plates respectively arranged on the top and bottom surfaces of the torsion spring feed block, the first positioning groove protruding from the front end of the torsion spring pressure plate, and a slot corresponding to the torsion spring positioning pin is provided at the front end of the torsion spring pressure plate; the torsion spring feed block is provided with a slide groove in the same sliding direction as the torsion spring feed block, and the slide groove is matched with a slider, the slider connects the two torsion spring pressure plates, and a spring is provided at the rear end of the slider, and the spring is located in the slide groove;

[0010] The ratchet positioning structure comprises a step structure formed by a downward depression of the front end of the top surface of the lifting block, the step structure comprises a horizontal surface portion and a side surface portion, and the horizontal surface portion is provided with a ratchet positioning pin;

[0011] The pawl fixing structure includes an insert block protruding from one side of the pawl positioning block facing the pawl positioning pin, and limit plates respectively arranged on the upper and lower positions of the insert block of the pawl positioning block. The two limit plates are respectively provided with grooves respectively facing a first positioning groove.

[0012] Furthermore, an arc-shaped support plate is provided below the turntable along the direction of the unloading mechanism, the torsion spring loading mechanism, the pawl loading mechanism and the lever loading mechanism, and the head end and the tail end of the arc-shaped support plate are respectively inclined downward with inclined portions;

[0013] The bottom surface of the turntable is provided with a fixed plate corresponding to the lifting block, and the fixed plate is provided with a sliding block in the vertical direction. The lifting block is fixed to the sliding block. The bottom surface of the lifting block is connected with a second roller corresponding to the arc-shaped support plate. The second roller is supported on the arc-shaped support plate and moves on the arc-shaped support plate. The bottom end of the fixed plate is provided with a baffle corresponding to the sliding block.

[0014] Furthermore, the frame is provided with an outward push cylinder at the position of the corresponding lever loading mechanism, and the push rod of the outward push cylinder is directly opposite to the ratchet positioning block.

[0015] Furthermore, the merging mechanism includes an inner push cylinder arranged outside the turntable, and a push rod of the inner push cylinder is arranged directly opposite to the torsion spring feed block;

[0016] The merging mechanism also includes a pressure head arranged opposite to the upper handle of the jig;

[0017] The flat plate is provided with a rectangular positioning plate with the same moving direction as the torsion spring feed block, and the top surface of the positioning plate is provided with a plurality of second positioning grooves, and the torsion spring feed block and the ratchet positioning block are respectively connected and fixed with the second positioning grooves.

[0018] Furthermore, the frame is provided with a horizontal push cylinder at the position of the ratchet feeding mechanism, and the push rod of the horizontal push cylinder is opposite to the torsion spring feeding block; a torsion spring pressure head is provided directly above the torsion spring locating pin, and the torsion spring pressure head is opposite to the slot opened at the front end of the torsion spring pressure plate and corresponding to the torsion spring locating pin.

[0019] Furthermore, the opening mechanism includes a connecting frame, and first rollers respectively arranged on the torsion spring feed block and the pawl positioning block, and the connecting frame is provided with two strip limit plates, the two strip limit plates and the two first rollers correspond one to one, and the two strip limit plates are an "eight" structure with an opening that gradually increases along the rotation direction of the turntable.

[0020] Compared with the prior art, the automatic assembly machine for the lever pawl of the utility model has the following advantages:

[0021] (1) In the utility model, various workstations such as the assembly of the lever, pawl, and torsion spring are arranged around the turntable, and a lever, pawl, and torsion spring fixing structure are arranged on the fixture to realize the loading and automatic assembly of the torsion spring, pawl, and lever, thereby improving production efficiency.

[0022] (2) In the present invention, the lifting action of the lifting block is realized by a purely mechanical mechanism, eliminating the use of a pneumatic cylinder, an oil cylinder or an electric push rod, thereby simplifying the equipment structure.

[0023] (3) In the utility model, after the pawl, torsion spring and lever are assembled, the pawl positioning block and the spring feed block are opened and restored to the initial working state through the opening mechanism, and the opening mechanism is a purely mechanical structure rather than an oil cylinder or an air cylinder, which simplifies the internal structure of the turntable. The two strip limit plates are in an "eight" structure. During the rotation of the turntable, the two strip limit plates adjust the moving routes of the two first rollers, and the two first rollers gradually move farther away, thereby opening the pawl positioning block and the spring feed block. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0025] Figure 1 This is a front view of the automatic assembly machine for the lever and ratchet described in this embodiment;

[0026] Figure 2 A top view of the automatic assembly machine for the handle and ratchet described in this embodiment;

[0027] Figure 3 This is a three-dimensional schematic diagram of the fixture in this embodiment;

[0028] Figure 4This is the front view of the fixture in this embodiment;

[0029] Figure 5 This is a top view of the fixture in this embodiment;

[0030] Figure 6 This is a left view of the fixture in this embodiment;

[0031] Figure 7 This is a three-dimensional schematic diagram of the spring feed block in this embodiment;

[0032] Figure 8 This is a three-dimensional schematic diagram of the lifting block in this embodiment;

[0033] Fig. 9 This is a diagram of the pawl positioning structure in this embodiment;

[0034] Fig.10 This is a three-dimensional schematic diagram of the arc-shaped support plate in this embodiment;

[0035] Fig.11 This is a schematic diagram of the structural relationship between the arc-shaped support plate and the lifting block in this embodiment;

[0036] Fig.12 This is a schematic diagram of the position relationship of the two limit plates of the opening mechanism in this embodiment;

[0037] Fig.13 Schematic diagram of the opening mechanism in this embodiment.

[0038] Description of reference numerals:

[0039] 1-torsion spring feeding mechanism; 2-ratchet feeding mechanism; 3-handle feeding mechanism; 4-merging mechanism; 5-cutter feeding mechanism; 6-opening mechanism; 7-pressing riveting mechanism; 8-feeding mechanism; 9-jig; 10-outward push cylinder; 11-turntable; 12-collection box; 13-arc support plate; 14-inward push cylinder; 61-strip limit plate; 62-connecting frame; 901-flat plate; 902-spring feeding block; 903-torsion spring pressure plate; 904-lifting block; 905-spring positioning pin; 906-ratchet positioning pin; 907- Limiting plate; 908-handle positioning pin; 909-handle positioning block; 910-pawl positioning block; 911-top block; 912-second positioning groove; 913-positioning plate; 914-slide rail; 915-first roller; 916-spring; 917-fixing plate; 918-connecting piece; 919-second roller; 920-slider; 921-baffle; 10-external push cylinder; 11-turntable; 12-collection box; 13-arc support plate; 131-inclined portion; 14-inner push cylinder; 15-transverse push cylinder; 16-pawl. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0041] Automatic assembly machine for lever and ratchet, such as Figure 1 , Figure 2 As shown, it includes a turntable 11 arranged on a frame, and the frame is provided with a torsion spring feeding station, a pawl feeding station, a lever feeding station, a pawl and lever merging station, a cutter feeding station, a fixture opening station, a riveting station and a blanking station at equal intervals around the turntable 11. The torsion spring feeding station is provided with a torsion spring feeding mechanism 1, the pawl feeding station is provided with a pawl feeding mechanism 2 and a horizontal push cylinder 15, the lever feeding station is provided with a lever feeding mechanism 3 and an external push cylinder 10, and the external push cylinder 10 is provided. The cylinder 10 is arranged above the turntable 11, with the push rod facing outward; the merging mechanism 4 corresponds to the ratchet handle merging station, the cutter feeding station corresponds to the cutter feeding mechanism 5, the fixture opening station corresponds to the opening mechanism 6, the riveting station corresponds to the riveting mechanism 7, and the unloading station corresponds to the unloading mechanism 8. The turntable 11 is provided with six fixtures 9, corresponding to the torsion spring feeding mechanism 1, the ratchet feeding mechanism 2, the handle feeding mechanism 3, the merging mechanism 4, the cutter feeding mechanism 5, and the opening mechanism 6. In this embodiment, the torsion spring feeding mechanism 1, the ratchet feeding mechanism 2, the handle feeding mechanism 3, the cutter feeding mechanism 5, and the riveting mechanism 7 can all adopt the existing technology to realize automatic feeding, so they are not described in detail in this embodiment.

[0042] The structure of fixture 9 is as follows Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the flat plate 901 moves with the turntable 11, and a lifting block 904 is arranged inside the flat plate 901. The bottom end of the lifting block 904 passes through the turntable 11, and a ratchet positioning structure is arranged at the inner end of the top surface of the lifting block 904 (the end close to the center of the turntable) to prevent the ratchet from being moved and to position the ratchet; a torsion spring positioning structure is arranged at the outer end of the top surface of the lifting block 904 (the end away from the center of the turntable) to prevent the torsion spring from being moved and to position the torsion spring. The flat plate 901 is provided with a ratchet positioning block 910 at the inner side of the lifting block 904 (the side of the lifting block facing the center of the turntable), and a torsion spring feeding block 902 at the outer side of the lifting block 904 (the side of the lifting block away from the center of the turntable), and the ratchet positioning block 910 and the torsion spring feeding block 902 are directly opposite to and can slide radially along the turntable 11. In this embodiment, the flat plate 901 is provided with a slide rail 914 and a positioning plate 913 corresponding to the pawl positioning block 910 and the torsion spring feed block 902. The pawl positioning block 910 and the torsion spring feed block 902 are respectively slidably connected through a slider and a slide rail 914; the positioning plate 913 is a rectangular plate structure, and a plurality of second positioning grooves 912 are provided on the top surface of the positioning plate 913. The torsion spring feed block 902 and the pawl positioning block 910 are respectively provided with a convex rib structure corresponding to the second positioning groove 912 on the bottom surface (not shown in the figure), and the convex rib structure and the second positioning groove 912 are matched and connected to form a jamming structure, which fixes the position of the torsion spring feed block 902 and the pawl positioning block 910. When a large external force is used to push the torsion spring feed block 902 and the pawl positioning block 910, the jamming effect is released, and the torsion spring feed block 902 and the pawl positioning block 910 can move along the slide rail 914. The pawl positioning block 910 is provided with a pawl fixing structure corresponding to the pawl on the lifting block 904 , the torsion spring feeding block 902 is provided with a torsion spring fixing structure corresponding to the torsion spring on the lifting block 904 , and the flat plate 901 is provided with a lever positioning structure beside the pawl positioning block 910 .

[0043] In this embodiment, the handle positioning structure includes three handle positioning blocks 909 installed on the flat plate 91. The three handle positioning blocks 909 enclose a fixed space that is shaped like the handle. A handle positioning pin 908 is vertically provided in the fixed space. When the turntable 11 carrying the jig 9 rotates to the position of the handle feeding mechanism, the handle in the vibration disk at this position vibrates to discharge the material, and then the robot grabs the material and feeds it into the fixed space, and its position is limited by the handle positioning pin 908.

[0044] The torsion spring positioning structure includes a torsion spring installation groove 9042 opened at the outer end of the top surface of the lifting block 904. Figure 8As shown, the torsion spring installation groove 9042 is closed at one end close to the center point of the turntable, and the other end (the end away from the center of the turntable) is open, and a torsion spring locating pin 905 is vertically upwardly provided in the torsion spring installation groove 9042, and spring seats 9041 are respectively provided at the bottom of the torsion spring installation groove 9042 in front of and behind the torsion spring locating pin 905, and the width of the spring seat 9041 corresponds to the diameter of the torsion spring locating pin 905; the spring seat 9041 supports the torsion spring, and an insertion space is formed between the spring seat 9041 and the side wall of the torsion spring installation groove 9042; when the torsion spring is fed, it is positioned by the torsion spring locating pin 905, and the two rotating arms of the torsion spring are limited by the two side walls of the torsion spring installation groove 9042, so as to improve the position accuracy of the torsion spring. The ratchet positioning structure includes a step structure formed by a downward depression of the front end of the top surface of the lifting block 904, including a horizontal surface and a side surface 9043. The horizontal surface is vertically upwardly provided with a ratchet positioning pin 906. When the ratchet is loaded, it is positioned by the ratchet positioning pin 906, and the side surface 9043 corresponds to the side wall of the ratchet to prevent the ratchet from rotating, thereby improving the ratchet position accuracy.

[0045] The structure of the torsion spring feed block 902 is as follows: Figure 7 As shown, the torsion spring feed block 902 is provided with a slide groove 9022 in the same sliding direction as the torsion spring feed block 902, and the slide groove 9022 is matched with a slider, and a spring 916 is provided between the rear end of the slider and the slide groove 9022. A lug is protruded from the upper and lower ends of the inner side surface (the side facing the ratchet positioning block) of the torsion spring feed block 902, and the two lugs are each provided with a first positioning groove 9021, and the first positioning groove 9021 is an arc groove, and the size is sufficient to ensure that the spring coils of the double torsion spring can be placed, and the two first positioning grooves 9021 correspond to the two spring coils of the double torsion spring. A torsion spring pressure plate 903 is provided on the top and bottom surfaces of the torsion spring feed block 902, respectively, and the two torsion spring pressure plates 903 are both installed on the slider of the slide groove 9022, and the front ends of the two torsion spring pressure plates 903 are provided with a slot corresponding to the torsion spring positioning pin 905, and the slot width corresponds to the diameter of the torsion spring positioning pin 905, and cooperates with the first positioning groove 9021 to form a torsion spring fixing structure.

[0046] The torsion spring feeding mechanism places the torsion spring on the torsion spring positioning pin 905 on the lifting block 904, and when it rotates with the turntable to the pawl feeding station, the torsion spring is fixed and the pawl is fed at this station. The pawl feeding mechanism feeds the pawl, and a torsion spring compression mechanism is provided at this station. The torsion spring compression mechanism can adopt any downward pressing structure, for example, it can be a downward pressing cylinder, and a torsion spring pressure head is provided on the downward pressing cylinder push rod, and the torsion spring pressure head is a strip plate matching the slot of the torsion spring pressure plate 903, and the torsion spring pressure head is provided with an avoidance groove corresponding to the torsion spring locating pin 905. The torsion spring pressure head compresses the torsion spring on the spring seat 9041, and the push rod of the horizontal push cylinder 15 of the pawl feeding station extends out to push the spring feeding block 902 forward until the torsion spring pressure head of the torsion spring compression mechanism enters the slot of the torsion spring pressure plate 903, and the torsion spring pressure plate 903 compresses the torsion spring. At this time, the two spring coils of the torsion spring are just inserted into the two first positioning grooves 9021 to fix the torsion spring. At this time, the spring feeding block 902 and the positioning plate 913 form a cardon connection structure, and the position of the torsion spring is fixed.

[0047] The ratchet fixing structure is as follows Fig. 9 As shown, it includes an insert block 9101 protruding from one side of the pawl positioning block 910 facing the pawl positioning pin 906, and a limit plate 907 respectively arranged on the upper and lower positions of the insert block 9101 of the pawl positioning block 910. The two limit plates 907 are respectively provided with a groove, and the two grooves are opposite to the two first positioning grooves 9021 on the spring feed block 902.

[0048] The fixing of the pawl is completed at the pull handle loading station. After the pull handle loading mechanism 3 at this station realizes the pull handle loading, the push cylinder 19 (see Figure 2 )'s push rod is extended, the pawl positioning block 910 moves outward until the insert block 9101 is inserted into the pawl 16, whereby the pawl enters between the two limiting plates 907 at the same time, and the outer side surface of the pawl 16 is limited by the side surface portion 9043 of the lifting block 904, thereby fixing the pawl.

[0049] After completing the loading operation of the torsion spring, pawl and handle, the jig 9 is moved to the merging station, where the merging mechanism 4 completes the assembly of the torsion spring, pawl and handle. The merging mechanism 4 includes an inner push cylinder 14 and a lower push cylinder arranged on the outside of the turntable, wherein the push rod of the inner push cylinder 14 is arranged opposite to the torsion spring feeding block 902, and the push rod of the lower push cylinder is provided with a pressure head corresponding to the handle on the jig 9. The merging process is as follows: when the jig moves to this position, the pressure head presses and fixes the lever, and the pressing and fixing point of the lever is close to the head, that is, the assembly position of the lever, the torsion spring and the pawl. The lifting block 904 descends, and the torsion spring positioning pin 905 and the pawl positioning pin 910 move down accordingly. At this time, the pawl is supported by the pawl fixing structure, and the torsion spring is supported by the torsion spring fixing structure. The push rod of the inner push cylinder 14 extends out, and the torsion spring feeding block 902 overcomes the jamming force between it and the positioning plate 913 and moves forward until the pawl is inserted between the two spring coils of the torsion spring. At this time, the lug of the torsion spring feeding block 902 presses against the limit plate 907 of the pawl positioning block 910, thereby pushing the pawl positioning block 910 to move forward together until the torsion spring pressure plate 903 on the torsion spring feeding block 902 presses against the groove wall of the front end slot of the lever. At this time, the pawl and torsion spring enter the slot of the lever, and the rivet hole of the pawl, the rivet hole of the torsion spring and the lever are aligned, and the merging and assembly is completed. The fixation of the positions of the pawl positioning block 910 and the torsion spring feed block 902 is achieved by the second positioning groove 912 of the positioning plate 913, and the displacement size is achieved by the controller controlling the extension and retraction amount of the push rod of the inner push cylinder.

[0050] In the present invention, the lifting action of the lifting block 904 is completely realized by the mechanical structure, so that the lifting block 904 is lifted when it is transferred to the torsion spring feeding station, and is lowered when it is transferred to the ratchet handle merging station. The specific structure is that an arc-shaped support plate 13 is provided below the turntable 11 along the direction of the feeding station, the torsion spring feeding station, the ratchet feeding station and the handle feeding station. The head end and the tail end of the arc-shaped support plate 13 are respectively inclined downward with an inclined portion 132, such as Fig.10 The bottom surface of the turntable 11 is provided with a fixing plate 917 corresponding to the lifting block 904. Fig.11 As shown, the fixed plate 917 is provided with a slider 920 in the vertical direction, and the lifting block 904 is fixed to the slider 920. The bottom surface of the lifting block 904 is connected to the second roller 919 corresponding to the arc support plate 13. When the fixture rotates with the turntable, the second roller 919 moves on the arc support plate 13 to ensure that the fixture is in a lifted state at the unloading station, the torsion spring loading station, the ratchet loading station and the lever loading station, ensuring the loading of the torsion spring, the ratchet and the lever and the corresponding operation. When the second roller 919 moves to a position close to the merging station on the arc support plate 13, the second roller 919 is removed from the arc support plate 13, and the lifting block 904 moves down until the baffle plate 921 at the bottom end of the fixed plate 917 blocks the slider 920 on the fixed plate from continuing to descend, and at this time, the lifting block 904 descends to the lowest position.

[0051] When the fixture is transferred to the cutter loading station, the cutter loading is realized through the cutter loading mechanism, and the rivet hole of the cutter and the rivet hole of the handle are aligned.

[0052] In the present invention, when the lifting block 904 descends and the torsion spring feed block 902 and the ratchet positioning block 910 abut against each other at the ratchet lever merging station, in order to carry out the next cycle operation, the torsion spring feed block 902 and the ratchet positioning block 910 need to be opened to facilitate the lifting block. Therefore, an opening mechanism 6 is provided at the opening station, which includes a connecting frame 63, and first rollers 915 respectively arranged on the torsion spring feed block 902 and the ratchet positioning block 910. The connecting frame 63 is provided with two strip limit plates 62, and the two strip limit plates 62 correspond to the two first rollers 915 one by one, and the two strip limit plates 62 are an "eight" structure with an opening gradually increasing in the direction of rotation of the turntable 11, such as Fig.12 As shown (this figure only shows the position relationship of the two limit plates). After the cutter is loaded at the cutter station, the fixture rotates to the opening station. During the rotation of the turntable 11, the two first rollers 915 are distributed on the outside of the two limit plates 62. Since the two limit plates 62 are arranged in an "eight" structure with the opening gradually increasing along the rotation direction of the turntable 11, the water turntable rotates, and the two limit plates 62 guide the movement of the first rollers 915, so that the distance between the two first rollers 915 gradually increases, thereby realizing the opening of the torsion spring feed block 902 and the ratchet positioning block 910. Fig.13 shown.

[0053] The jig is transferred to the riveting station, and the riveting mechanism uses rivets to rivet the cutter, the lever and the pawl, and then it is transferred to the unloading station, and the unloading mechanism unloads the riveted lever and pawl assembly into the collection box 12 for collection.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Automatic assembly machine for lever and ratchet, characterized by: The invention comprises a rotating disk (11) arranged on a frame, wherein the frame is provided with a torsion spring feeding mechanism (1), a ratchet feeding mechanism (2), a lever feeding mechanism (3), a merging mechanism (4), a cutter feeding mechanism (5), an opening mechanism (6), a riveting mechanism (7) and a feeding mechanism (8) at equal intervals around the rotating disk (11), and six jigs (9) are provided on the rotating disk (11) corresponding to the torsion spring feeding mechanism (1), the ratchet feeding mechanism (2), the lever feeding mechanism (3), the merging mechanism (4), the cutter feeding mechanism (5) and the opening mechanism (6); The fixture (9) comprises a flat plate (901) and a lifting block (904) disposed through the flat plate (901); a ratchet positioning structure is disposed at the inner end of the top surface of the lifting block (904) and a torsion spring positioning structure is disposed at the outer end of the top surface; a ratchet positioning block (910) is disposed on the inner side of the lifting block (904) and a torsion spring feeding block (902) is disposed on the outer side of the lifting block (904); the ratchet positioning block (910) and the torsion spring feeding block (902) are directly opposite to and both slide radially along the rotating disk (11); the ratchet positioning block (910) is disposed with a ratchet fixing structure corresponding to the ratchet on the lifting block (904); the torsion spring feeding block (902) is disposed with a torsion spring fixing structure corresponding to the torsion spring on the lifting block (904); and the flat plate (901) is disposed with a lever positioning structure beside the ratchet positioning block (910).

2. The automatic assembly machine for the lever pawl according to claim 1, characterized in that: The torsion spring positioning structure comprises a torsion spring installation groove (9042) provided on the top surface of the lifting block (904), and a torsion spring positioning pin (905) arranged in the torsion spring installation groove (9042); the bottom of the torsion spring installation groove (9042) is provided with spring seats (9041) at the front and rear sides of the torsion spring positioning pin (905), respectively; the width of the spring seat (9041) corresponds to the diameter of the torsion spring positioning pin (905); The torsion spring fixing structure comprises first positioning grooves (9021) protruding from the upper and lower ends of the inner side of the torsion spring feed block (902) and each accommodating a spring coil of the double torsion spring, and torsion spring pressure plates (903) respectively arranged on the top and bottom surfaces of the torsion spring feed block (902), the first positioning groove (9021) protruding from the front end of the torsion spring pressure plate (903), and a slot corresponding to the torsion spring positioning pin (905) being provided at the front end of the torsion spring pressure plate (903); the torsion spring feed block (902) is provided with a slide groove (9022) having the same sliding direction as the torsion spring feed block (902), the slide groove (9022) being matched with a slider, the slider connecting the two torsion spring pressure plates (903), the rear end of the slider being provided with a spring (916), the spring (916) being located in the slide groove (9022); The ratchet positioning structure comprises a step structure formed by a downward depression of the front end of the top face of the lifting block (904), the step structure comprises a horizontal face portion and a side face portion (9043), and the horizontal face portion is provided with a ratchet positioning pin (906); The pawl fixing structure comprises an insert block (9101) protruding from one side of the pawl positioning block (910) facing the pawl positioning pin (906), and limit plates (907) respectively provided above and below the insert block (9101) of the pawl positioning block (910), wherein the two limit plates (907) are respectively provided with grooves respectively facing one of the first positioning grooves (9021).

3. The automatic assembly machine for the lever pawl according to claim 2, characterized in that: An arc-shaped support plate (13) is provided below the rotating disk (11) along the direction of the unloading mechanism (8), the torsion spring loading mechanism (1), the ratchet loading mechanism (2) and the lever loading mechanism, and the front end and the rear end of the arc-shaped support plate (13) are respectively inclined downwards and have inclined portions (132); The bottom surface of the turntable (11) is provided with a fixed plate (917) corresponding to the lifting block (904); the fixed plate (917) is provided with a slider (920) in the vertical direction; the lifting block (904) is fixed to the slider (920); the bottom surface of the lifting block (904) is connected with a second roller (919) corresponding to the arc-shaped support plate (13); the second roller (919) is supported on the arc-shaped support plate (13) and moves on the arc-shaped support plate (13); and a baffle (921) corresponding to the slider is provided at the bottom end of the fixed plate (917).

4. The automatic assembly machine for the lever pawl according to claim 3, characterized in that: The frame is provided with an outward-pushing cylinder (10) at the position of the corresponding lever loading mechanism (3), and the push rod of the outward-pushing cylinder (10) is directly opposite to the ratchet positioning block (910).

5. The automatic assembly machine for the lever pawl according to claim 3, characterized in that: The merging mechanism (4) comprises an inner push cylinder (14) arranged outside the rotating disk, and a push rod of the inner push cylinder (14) is arranged directly opposite to the torsion spring feed block (902); The merging mechanism (4) further comprises a pressure head arranged opposite to the handle on the jig (9); The flat plate (901) is provided with a rectangular positioning plate (913) with the same moving direction as the torsion spring feed block (902), and a plurality of second positioning grooves (912) are provided on the top surface of the positioning plate (913). The torsion spring feed block (902) and the ratchet positioning block (910) are respectively engaged and fixed with the second positioning grooves (912).

6. The automatic assembly machine for the lever pawl according to claim 2, characterized in that: The frame is provided with a horizontal push cylinder (15) at the position of the ratchet feeding mechanism (2), and the push rod of the horizontal push cylinder (15) is directly opposite to the torsion spring feeding block (902); and a torsion spring pressure head is also provided at the ratchet feeding position and is directly opposite to the torsion spring positioning pin (905).

7. The automatic assembly machine for the lever pawl according to claim 1, characterized in that: The opening mechanism (6) comprises a connecting frame (63), and first rollers (915) respectively arranged on the torsion spring feed block (902) and the ratchet positioning block (910); the connecting frame (63) is provided with two strip-shaped limit plates (62); the two strip-shaped limit plates (62) correspond to the two first rollers (915) in a one-to-one manner, and the two strip-shaped limit plates (62) are in an "eight" structure with openings gradually increasing along the rotation direction of the rotating disk 11.

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