A feeding mechanism used for punching holes in metal strips

Abstract

The present invention discloses a feeding mechanism applied to punching of metal strips, comprising a tube frame, a push-pull rod, a square box cover and a toggle mechanism, wherein both left and right longitudinal frames in the active "U"-shaped frame are movably sleeved with vertical shell seats, and the vertical shell seats are plugged and fixedly connected in the groove of the shell cavity wall in the tube frame by bolts, the square box cover is fixedly arranged in the middle of the shell cavity of the tube frame, and a feeding frame corresponding to the square box cover is vertically installed in the middle of the tube frame, and the toggle mechanism is arranged in an up-down mirror state with respect to the horizontal central axis of the feeding square tube frame part in the feeding frame. The feeding mechanism applied to punching of metal strips realizes the automatic drilling operation after the conditional feeding of the metal plate through the linkage structure, and realizes the automatic clamping and conveying and the automatic unlocking after clamping, and also meets the conveying requirements of the metal plate conditions of different distances, and thus meets the drilling requirements of different hole distances between the orifices.

Description

Technical Field

[0001] The invention relates to the technical field related to hardware strip processing, and in particular to a feeding mechanism used for punching holes in hardware strips. Background Art

[0002] The hole punching process of metal strips refers to the process of punching or drilling through holes for installing bolts on the metal strips. The number of holes and the hole distance between two connected through holes are different according to different installation and use requirements. In addition, in order to ensure automated punching, a feeding mechanism is usually required to assist in feeding.

[0003] After searching the invention patent with patent number CN110125456B, a device for automatically drilling holes at equal intervals on a metal strip is disclosed, which relates to the technical field of drilling holes on metal plates, including a bottom plate, a bracket fixed on the bottom plate, a fixed frame slidably mounted on the bracket, a locking mechanism for clamping the metal plate, a rack I fixed to the fixed frame meshingly connected to the upper side of the incomplete gear, a swing mechanism for intermittently fixing the fixed frame on the bottom plate, and the swing mechanism includes a rack II located at the lower side of the incomplete gear and meshingly matched with the incomplete gear. The present invention uses the fixed frame to drive the metal plate to move a certain distance to the left each time, and the drill bit moves downward a certain distance to complete a single drilling of the metal plate, and in the process of the metal plate moving step by step to the left, the automatic drilling operation of the metal plate at equal intervals is completed, the degree of automation is high, and the swing mechanism can achieve the fixing effect when drilling holes on the metal plate, which greatly improves the drilling quality of the metal plate.

[0004] The feeding mechanism used in the above patents and prior art background still has certain disadvantages, such as:

[0005] 1. The feeding mechanism of the hole-opening device in the above patent and the feeding mechanism of the existing punching device both need to lock the plate through a locking mechanism before feeding, that is, the plate needs to be placed and fixed through the locking mechanism each time the material is fed, which affects the continuity of the processing process and thus affects the processing efficiency;

[0006] 2. The locking mechanism of the hole-opening device in the above patent is not set as an adjustable structure, that is, the model of the processed plate is fixed, which cannot meet the processing requirements of plates of different specifications and sizes. In addition, in the above patent, the incomplete gear is used to cooperate with the rack intermittently to drive the plate to move at equal intervals, and the swing mechanism is used for limiting, that is, the distance the plate moves each time is fixed and cannot be adjusted, so only the hole-opening operation with the same hole spacing can be performed, which cannot meet the hole-opening requirements with different hole spacings;

[0007] Therefore, we propose a feeding mechanism for punching holes in metal strips to solve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide a feeding mechanism for punching metal strips to solve the problems raised by the above background technology that the processing requirements of plates of different specifications and sizes cannot be met, the drilling requirements of different hole distances cannot be met, and the continuity of the processing process is affected.

[0009] To achieve the above object, the present invention provides the following technical solution: a feeding mechanism used for punching holes in hardware strips, comprising:

[0010] A tube shell frame, wherein a cylinder is fixedly mounted on the upper side wall of a shell cover of the tube shell frame by bolts;

[0011] Also includes:

[0012] A push-pull rod, wherein the connecting disk portion of the push-pull rod is sleeved and fixedly connected to the end of the output rod body of the cylinder by bolts, and a drilling mechanism is fixedly installed on the fixed disk portion of the push-pull rod by bolts, the rod body of the push-pull rod forms an up-and-down sliding structure on the sleeve portion of the active "U"-shaped frame, and a reset spring is installed at the sliding connection between the active "U"-shaped frame and the push-pull rod;

[0013] Wherein, the left and right longitudinal frames of the active "U"-shaped frame are both movably sleeved with vertical shell seats, and the vertical shell seats are plugged and fixedly connected to the groove of the shell cavity wall in the tube shell frame by bolts;

[0014] Among them, the vertical housing seat is sequentially clamped and installed with two transverse housing seats from top to bottom, and the transverse housing seat is fixedly connected to the housing wall of the tube housing frame by bolts and is arranged in a vertical state with the vertical housing seat, and the connection between the transverse housing seat and the vertical housing seat is rotatably connected with a gear column, and the rear side of the gear column is connected to the rack part of the active "U"-shaped frame in a meshing manner;

[0015] A square box cover is fixedly arranged in the middle of the shell cavity of the tube shell frame, and a feeding frame corresponding to the square box cover is vertically installed in the middle of the tube shell frame, and the connecting frame part of the feeding frame is sleeved and fixedly connected to the shell wall of the tube shell frame by bolts;

[0016] The upper part of the cover cavity in the square box cover is movably mounted with a first clamping jaw in an inclined state, and the first clamping jaw forms a flip structure in the upper cover cavity of the square box cover, and the lower part of the cover cavity in the square box cover is movably mounted with a second clamping jaw in an inclined state, and the second clamping jaw forms a flip structure in the lower cover cavity of the square box cover;

[0017] Wherein, the left and right tube cavities of the feeding square tube frame part and the left and right tube cavities of the discharging square tube frame part of the material conveying frame are both movably installed with material guide strips that can be slidably adjusted, and the plate body of the material guide strip is installed with movable bolts for adjustment, and the groove cavity of the material guide strip is rotatably connected with material conveying groove wheels at equal intervals;

[0018] A toggle mechanism, wherein the toggle mechanism is arranged in an up-and-down mirror state with respect to the horizontal central axis of the feeding square tube frame portion in the feeding frame, and the toggle mechanism comprises a "U"-shaped shell seat, a movable seat, a circular groove, a limiting strip plate and a toggle member;

[0019] The movable seat is arranged in a movable state in the through-shaped long groove of the "U"-shaped shell seat, and the movable seat is assisted by rollers to form a sliding structure on the "U"-shaped shell seat, and a circular groove is provided on the left longitudinal side wall and the right longitudinal side wall of the "U"-shaped shell seat, and a limiting strip plate for blocking is arranged on the lower horizontal groove of the circular groove, and the limiting strip plate forms a sliding structure on the longitudinal side wall of the "U"-shaped shell seat, and a fixing bolt for locking is installed at the connection between the limiting strip plate and the longitudinal side wall of the "U"-shaped shell seat;

[0020] The movable seat is provided with a toggle member that can slide up and down in a movable manner in the middle thereof, and a first spring is provided at the sliding connection between the rod body portion of the toggle member and the movable seat, the outer wall of the movable seat is fixedly connected with the transverse frame body of the driven "U"-shaped frame by bolts, and the longitudinal frame body of the driven "U"-shaped frame is assisted by rollers to form a sliding structure in the cavity of the transverse shell seat, and the rack portion of the driven "U"-shaped frame is connected with the upper side of the gear column in a meshing manner;

[0021] Among them, a round pin rod that can be telescopically slid is movably inserted into the wide part of the lumen of the protruding block in the toggle piece, and a second spring is installed in the gap between the left and right round pin rods in the toggle piece, and the end of the round pin rod is movably inserted in the circular groove, and a rubber head that can be slidably adjusted is movably clamped on the narrow part of the protruding block in the toggle piece, and a fixing bolt for locking is installed at the sliding connection between the rubber head and the protruding block in the toggle piece.

[0022] Preferably, the longitudinal plate in the active "U"-shaped frame forms an up and down sliding structure in the cavity of the vertical shell seat with the assistance of rollers, and a third spring is installed at the connection between the longitudinal plate in the active "U"-shaped frame and the vertical shell seat.

[0023] Preferably, the first jaw and the second jaw are arranged in a front-to-back mirror state with respect to the vertical central axis of the square box cover, and the first jaw corresponds to the second jaw and is arranged in opposite inclined directions, a rotatable rubber roller is movably installed in the lower end groove cavity of the first jaw and the upper end groove cavity of the second jaw, and a torsion spring is installed at the connection between the first jaw and the upper cover wall of the square box cover and at the connection between the second jaw and the lower cover wall of the square box cover.

[0024] Preferably, the round pin rod is arranged in a left-right mirrored state with respect to the vertical center axis of the toggle member, and the toggle member is arranged in a vertical state in the shell cavity of the "U"-shaped shell seat, and the round pin rod forms a sliding structure in the circular groove.

[0025] Preferably, a first limiting claw capable of telescopic sliding is movably installed at the connection between the front inclined groove path and the upper horizontal groove path in the circular groove, and a fourth spring is installed at the sliding connection between the first limiting claw and the groove wall in the circular groove, and the inclined side wall of the first limiting claw faces the upper horizontal groove path of the circular groove;

[0026] Among them, a second limiting claw that can slide telescopically is movably installed at the connection between the rear inclined groove and the lower horizontal groove in the circular groove, and a fifth spring is installed at the sliding connection between the second limiting claw and the groove wall in the circular groove, and the inclined side wall of the second limiting claw faces the lower horizontal groove of the circular groove.

[0027] Preferably, the front inclined groove and the upper horizontal groove in the meandering groove are both set in a closed state, and the rear inclined groove and the lower horizontal groove in the meandering groove are both set in an open state, and the rear section of the lower horizontal groove in the meandering groove and the lower section of the rear inclined groove are both set in a wide structure, and the spacing dimension between the groove wall of the lower horizontal groove in the meandering groove and the side wall of the limiting strip is equal to the width dimension of the upper horizontal groove in the meandering groove.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: the feeding mechanism applied to the punching processing of the hardware plate strip realizes the automatic drilling operation after the hardware plate condition feeding through the linkage structure, and realizes the automatic clamping and conveying and the automatic unlocking after clamping, thereby improving the automation performance, and further meets the conveying requirements of the hardware plate condition at different distances, and further meets the drilling requirements of the hardware plate condition at different hole openings;

[0029] 1. An active "U"-shaped frame and a driven "U"-shaped frame are provided. The elastic force of the reset spring is greater than the elastic force of the third spring. The push-pull rod is driven to move downward by the elastic support of the reset spring, and the active "U"-shaped frame is driven to slide downward synchronously. When the active "U"-shaped frame slides, the transmission of the gear column is used to make the driven "U"-shaped frame drive the movable seat to slide, and the movable seat drives the toggle member to move synchronously. The mutual cooperation between the circular groove and the round pin rod is used to clamp and lock the hardware plate through the upper and lower rubber heads during the movement of the toggle member for transportation. When the active "U"-shaped frame is restricted and does not slide, the push-pull rod squeezes the reset spring to cause elastic deformation, so that the drilling mechanism continues to move downward for drilling. Through the linkage structure, the automatic drilling operation after the hardware plate is fed conditionedly is realized, which improves the automation performance, thereby improving the processing efficiency and ensuring the continuity of the processing process.

[0030] 2. A guide strip and a limit strip are provided. With the assistance of a movable bolt, the guide strip forms a sliding structure in the tube cavity of the material conveying frame, and the left and right guide strips have independent adjustment structures, that is, they can be adjusted separately. The rubber head forms a sliding structure on the toggle member, which is locked by the fixing bolt thereon after sliding adjustment. The adjustable structure setting can meet the use requirements of hardware plate conditions of different specifications and sizes. The limit strip forms a sliding structure on the longitudinal side wall of the "U"-shaped shell seat, and the limit strip has a blocking effect on the lower horizontal groove in the circular groove. When the round pin rod slides to the gap between the side wall of the limit strip plate and the groove wall of the lower horizontal groove, the upper and lower rubber heads clamp and lock the hardware plate conditions. When the round pin rod slides and disengages from the limit strip plate, the upper and lower rubber heads release the clamping. By adjusting the position of the limit strip plate, the transportation requirements of different distances of the hardware plate conditions can be met, and then the drilling requirements of different hole distances between the hole openings in the hardware plate conditions can be met, which effectively improves the scope of application.

[0031] 3. A circular groove and a toggle piece are provided. During the feeding process of the toggle mechanism, when the round pin rod slides to the gap between the side wall of the limiting strip and the groove wall of the lower horizontal groove in the circular groove, the toggle piece is driven to slide on the movable seat, and the toggle piece in the upper movable seat and the toggle piece in the lower movable seat slide in opposite directions, and the hardware plate conditions are clamped and locked by the rubber heads in the upper toggle piece and the lower toggle piece. During the resetting process of the toggle mechanism, the round pin rod slides and separates from the limiting strip, and is reset by the elastic deformation of the first spring, so that the toggle piece is reset and slid on the movable seat to release the clamping lock, and the round pin rod completes the reset through the rear inclined groove and the upper horizontal groove in the circular groove, thereby realizing automatic clamping and conveying during the conveying process of the hardware plate conditions, and realizing automatic unlocking after clamping and locking, thereby meeting the use requirements of convenient operation and further improving the automation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the front view of the three-dimensional structure of the present invention;

[0033] Figure 2 It is a schematic diagram of a front view cross-sectional three-dimensional structure of the connection between the tube shell frame and the vertical shell seat of the present invention;

[0034] Figure 3 It is a schematic diagram of the front view cross-section of the three-dimensional structure of the active "U"-shaped frame connected to the vertical housing seat of the present invention;

[0035] Figure 4 It is a schematic diagram of a front view cross-sectional three-dimensional structure of the connection between the vertical shell seat and the horizontal shell seat of the present invention;

[0036] Figure 5 It is a schematic diagram of the front view of the three-dimensional structure of the connection between the transverse shell seat and the driven "U"-shaped frame of the present invention;

[0037] Figure 6It is a front view cross-sectional structural diagram of the connection between the tube shell frame and the square box cover of the present invention;

[0038] Figure 7 This is a schematic diagram of the exploded front view of the three-dimensional structure of the material conveying frame and the toggle mechanism of the present invention;

[0039] Figure 8 It is a schematic diagram of the front cross-sectional three-dimensional structure of the connection between the material conveying frame and the material guiding strip plate of the present invention;

[0040] Fig. 9 It is a schematic diagram of the three-dimensional structure of the "U"-shaped housing seat of the present invention in front view;

[0041] Fig.10 It is a schematic diagram of a side cross-sectional three-dimensional structure of the connection between the "U"-shaped housing seat and the first limiting claw of the present invention;

[0042] Fig.11 It is a schematic diagram of the front view of the three-dimensional structure of the connection between the "U"-shaped shell seat and the limiting strip plate of the present invention;

[0043] Fig.12 It is a schematic diagram of a front view cross-section of a three-dimensional structure of the connection between the movable seat and the toggle member of the present invention;

[0044] Fig.13 It is a schematic diagram of the side cross-sectional three-dimensional structure of the connection between the toggle member and the round pin rod of the present invention.

[0045] In the figure: 1. tube shell frame; 2. cylinder; 3. push-pull rod; 4. drilling mechanism; 5. active "U"-shaped frame; 6. reset spring; 7. vertical shell seat; 8. horizontal shell seat; 9. gear column; 10. square box cover; 11. feed frame; 12. first clamping jaw; 13. second clamping jaw; 14. guide strip plate; 15. movable bolt; 16. feed groove wheel; 17. toggle mechanism; 18. "U"-shaped shell seat; 19. movable seat; 20. circular groove; 21. limit strip plate; 22. toggle member; 23. first spring; 24. driven "U"-shaped frame; 25. round pin rod; 26. second spring; 27. rubber head; 28. third spring; 29. ​​rubber roller; 30. torsion spring; 31. first limit claw; 32. fourth spring; 33. second limit claw; 34. fifth spring. Implementation

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] See also Figure 1-13The present invention provides a technical solution: a feeding mechanism used for punching holes in metal strips, comprising a tube shell frame 1, a push-pull rod 3, a square box cover 10 and a toggle mechanism 17.

[0048] Before using the feeding mechanism for punching holes in metal strips, Figure 6 , Figure 8 , Fig. 9 , Fig.11 and Fig.12 As shown, firstly, the distance between the left and right material guide strips 14 and the positions of the left and right material guide strips 14 on the material conveying frame 11 are adjusted according to the width of the hardware plate and the position of the hole after punching. Then, the position of the rubber head 27 on the toggle member 22 is adjusted according to the thickness of the hardware plate. Then, the position of the limit strip 21 is adjusted according to the distance between the holes in the hardware plate.

[0049] When adjusting the positions of the left and right guide strips 14, specifically, the feed frame 11 is divided into three parts from the front to the back, namely, a feed square tube frame part, a connecting frame part and a discharge square tube frame part. The left and right tube cavities of the feed square tube frame part and the left and right tube cavities of the discharge square tube frame part in the feed frame 11 are both movably provided with guide strips 14, and the left and right guide strips 14 are arranged in a mirror-symmetrical manner. Since movable bolts 15 are installed at both the front and rear ends of the plate body in the guide strip 14, after the movable bolt 15 is installed, its end is rotatably connected to the plate body of the guide strip 14, and its bolt body is threadedly connected to the tube wall of the feed frame 11. According to the width size of the hardware plate conditions and the position of the hole after punching, the left and right guide strips 14 are respectively screwed and rotated. The movable bolt 15 on the guide strip 14 and the movable bolt 15 on the right guide strip 14 push the guide strip 14 through the movable bolt 15, so that the guide strip 14 slides in the tube cavity of the feeding frame 11, and the spacing between the left and right guide strips 14 and the positions of the left and right guide strips 14 on the feeding frame 11 are adjusted to meet the use requirements of the feed groove wheel 16 on the left guide strip 14 and the feed groove wheel 16 on the right guide strip 14 respectively being clamped on the left and right sides of the hardware plate. In addition, after adjusting the guide strip 14, it is ensured that the left and right guide strips 14 in the feeding square tube frame part are respectively arranged in a corresponding state with the left and right guide strips 14 in the discharging square tube frame part;

[0050] When adjusting the position of the rubber head 27, specifically, the toggle member 22 is composed of a projection portion and a rod body portion vertically arranged on the projection portion. After the rubber head 27 is placed, it is actively clamped on the narrow part of the projection portion in the toggle member 22. Since an adjustment groove is provided on the side wall of the rubber head 27, a fixing bolt for locking is installed at the sliding connection between the rubber head 27 and the projection portion in the toggle member 22, and the fixing bolt is inserted through the adjustment groove and threadedly connected to the narrow side wall of the projection portion in the toggle member 22. Since the upper and lower rubber heads 27 are arranged in a mirror-symmetrical manner with respect to the horizontal central axis of the hardware plate condition, the rubber head 27 is slidably adjusted on the projection portion of the toggle member 22, so that the upper and lower rubber heads 27 can clamp and lock the hardware plate condition after moving to the specified position in the opposite direction, and locked by the fixing bolt in the rubber head 27 after adjustment;

[0051] When adjusting the position of the limit strip 21, specifically, an adjusting groove is provided on the plate body of the limit strip 21. Since the limit strip 21 is in an active state after being placed and is clamped on the longitudinal side wall of the "U"-shaped shell seat 18, it is placed on the lower horizontal groove road of the circular groove 20 to play a blocking role. In addition, since a fixing bolt is installed at the connection between the limit strip 21 and the longitudinal side wall of the "U"-shaped shell seat 18, wherein the fixing bolt is inserted through its adjusting groove and threadedly connected to the longitudinal side wall of the "U"-shaped shell seat 18, the limit strip 21 is slid on the longitudinal side wall of the "U"-shaped shell seat 18, so that the blocking distance of the limit strip 21 on the lower horizontal groove road of the circular groove 20 is equal to the spacing size between the two orifices on the hardware plate condition, that is, the distance that the round pin rod 25 slides along the limit strip 21 is equal to the spacing size between the two orifices on the hardware plate condition, and after adjustment, it is locked by the fixing bolt on the limit strip 21;

[0052] When using the feeding mechanism for punching holes in metal plates, first place the metal plates and then Figure 6 , Figure 7 and Figure 8As shown, a feed port is provided in the middle of the front shell wall of the tube shell frame 1, and a square box cover 10 is fixedly arranged in the middle of the shell cavity of the tube shell frame 1, and a feed port and a discharge port are respectively provided in the middle of the front cover wall and the middle of the rear cover wall, and the feed port and the discharge port are adapted to be arranged in a corresponding state, and the feed port and the feed port of the tube shell frame 1 are also adapted to be arranged in a corresponding state. After the material conveying frame 11 is arranged, it is placed in a vertical state in the middle of the tube shell frame 1 and is arranged in a corresponding state with the square box cover 10, and the connecting frame part is sleeved and fixed on the shell wall of the tube shell frame 1 by bolts, and the tube cavity of the feeding square tube frame part is adapted to be arranged in a corresponding state with the feed port of the square box cover 10. The tube cavity of the discharging square tube frame part is matched with the discharging port of the square box cover 10 and is arranged in a corresponding state. Since the longitudinal section of the guide strip 14 is a "concave"-shaped structure, rotatable feeding groove wheels 16 are evenly installed in the groove cavity of the left guide strip 14 and the groove cavity of the right guide strip 14. The hardware plate condition is inserted into the tube cavity of the feeding square tube frame part of the feeding rack 11, so that the left and right sides of the hardware plate condition are respectively clamped on the feeding groove wheel 16 in the left guide strip 14 and the feeding groove wheel 16 in the right guide strip 14. The hardware plate condition is continuously inserted so that it passes through the tube cavity of the square box cover 10 and the discharging square tube frame part of the feeding rack 11 in turn and extends to the outside.

[0053] Then carry out the feeding operation of the hardware plate conditions, according to the attached Figure 1 and Figure 2 As shown, the shell cover in the tube shell frame 1 is plugged and fixedly connected to the upper tube mouth of the tube shell frame 1 by bolts, and the cylinder 2 is fixedly installed on the upper side wall of the shell cover of the tube shell frame 1 in a vertical state by bolts, and its output rod body is inserted through the hole on the shell cover and extends into the shell cavity of the tube shell frame 1. Since the upper end of the rod body of the push-pull rod 3 is sleeved and fixedly connected with a connecting plate part by bolts, and the lower end of the rod body is welded with a fixed plate part of an integrated structure, and the connecting plate part is sleeved and fixedly connected to the output rod body end of the cylinder 2 by bolts, and a drilling mechanism 4 in a vertical state is fixedly installed on the fixed plate part by bolts, the cylinder 2 is started to stretch downward, and the drilling mechanism 4 is driven by the push-pull rod 3 to slide downward in the shell cavity of the tube shell frame 1;

[0054] According to the attached Figure 2 and Figure 3As shown, grooves are provided in the middle of the left cavity wall and the middle of the right cavity wall of the tube shell frame 1, and the vertical shell seat 7 is arranged in a left and right mirror state with respect to the vertical central axis of the tube shell frame 1, and the left and right vertical shell seats 7 correspond to the left and right grooves in the tube shell frame 1 respectively, and the left and right vertical shell seats 7 are respectively inserted and fixed in the left and right grooves by bolts. Since the active "U"-shaped frame 5 is placed between the left and right vertical shell seats 7, and the left and right longitudinal frames are respectively connected to the left and right vertical shell seats 7 in a movable sleeve manner, and the left and right longitudinal frames are connected to a number of rollers in sequence from top to bottom, and since the middle of the horizontal frame in the active "U"-shaped frame 5 is provided with a sleeve portion of an integrated structure, and the sleeve portion and the rod body of the push-pull rod 3 are movable The push-pull rod 3 is connected in a dynamic penetration manner, and a return spring 6 is installed at the sliding connection between the sleeve portion and the push-pull rod 3. The elastic force of the return spring 6 is greater than the elastic force of the third spring 28. After being installed, the return spring 6 is sleeved on the rod body of the push-pull rod 3 in an active state, one end of which is against the side wall of the connecting disk portion of the push-pull rod 3, and the other end is against the side wall of the sleeve portion of the active "U"-shaped frame 5. When the cylinder 2 initially stretches, it is supported by the elastic deformation of the return spring 6. The active "U"-shaped frame 5 is positioned on the push-pull rod 3 in the initial state. When the push-pull rod 3 initially moves downward, the active "U"-shaped frame 5 is driven by the push-pull rod 3 to move downward synchronously, so that the left and right longitudinal plates in the active "U"-shaped frame 5 slide downward in the cavities of the left and right vertical shell seats 7 respectively with the assistance of rollers;

[0055] Since the third spring 28 is inserted into the lower cavity of the vertical housing seat 7 in an active state after being installed, it is placed at the connection between the longitudinal plate in the active "U"-shaped frame 5 and the vertical housing seat 7, and one end thereof abuts against the lower end of the longitudinal plate of the active "U"-shaped frame 5, and the other end thereof abuts against the lower cavity wall of the vertical housing seat 7. When the longitudinal plate in the active "U"-shaped frame 5 slides downward in the cavity of the vertical housing seat 7, the third spring 28 is squeezed and elastically deformed;

[0056] According to the attached Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the toggle mechanism 17 is arranged in a mirror image state with respect to the horizontal central axis of the feeding square tube frame part in the feeding frame 11, and a driven "U"-shaped frame 24 is installed on the outer wall of the upper movable seat 19 and the outer wall of the lower movable seat 19, and the vertical shell seat 7 is sequentially clamped and installed with two transverse shell seats 8 from top to bottom. After the transverse shell seat 8 is installed, it is fixed to the shell wall of the tube shell frame 1 in a vertical state, wherein the shell cavity is arranged in a through state, and a plurality of rollers are sequentially connected to the shell cavity from front to back. The gear column 9 is arranged at the connection between the horizontal housing seat 8 and the vertical housing seat 7, wherein one end of the shaft column is assisted by a bearing to form a rotating structure on the vertical housing seat 7, and the other end of the shaft column is assisted by a bearing to form a rotating structure on the horizontal housing seat 8. Since rack parts are provided on both the left and right longitudinal frames of the active "U"-shaped frame 5, wherein the rack parts are connected to the rear side of the gear column 9 in a meshing manner, when the active "U"-shaped frame 5 slides downward, the gear column 9 is driven to rotate at the same time;

[0057] After the driven "U"-shaped frame 24 is placed, the left and right longitudinal frames of the upper driven "U"-shaped frame 24 correspond to the left and right transverse shell seats 8 placed above the vertical shell seat 7, and are movably inserted in the shell cavity, and the left and right longitudinal frames of the lower driven "U"-shaped frame 24 correspond to the left and right transverse shell seats 8 placed below the vertical shell seat 7, and are also movably inserted in the shell cavity. In addition, since the lower side wall of the left longitudinal frame body and the lower side wall of the right longitudinal frame body in the driven "U"-shaped frame 24 are both provided with a rack portion, and the rack portion of the driven "U"-shaped frame 24 is connected to the rack portion of the gear. The upper side of the wheel column 9 is connected in a meshing manner, and the driven "U"-shaped frame 24 in the upper toggle mechanism 17 and the driven "U"-shaped frame 24 in the lower toggle mechanism 17, both of which have gear blocks facing downward, and the longitudinal frame body of the driven "U"-shaped frame 24 and the longitudinal frame body of the active "U"-shaped frame 5 are arranged in a staggered state, and the upper and lower driven "U"-shaped frames 24 are driven synchronously and in the same direction by the transmission of the gear column 9, so that the longitudinal frame body of the driven "U"-shaped frame 24 slides backward in the cavity of the transverse shell seat 8 with the assistance of rollers;

[0058] According to the attached Figure 7 , Fig. 9 and Fig.12As shown, the upper and lower tube walls of the feeding square tube frame part of the feeding frame 11 are set in an open state, and the upper and lower toggle mechanisms 17 are respectively placed at the upper and lower openings of the feeding square tube frame part of the feeding frame 11 after being arranged, so that the toggle member 22 in the upper toggle mechanism 17 and the toggle member 22 in the lower toggle mechanism 17 are both inserted into the tube cavity of the feeding square tube frame part of the feeding frame 11, and a through long groove portion is opened on the lateral side wall of the "U"-shaped shell seat 18, and the left and right groove walls of the through long groove portion are both set in a semicircular structure state, and the left and right side walls of the movable seat 19 are both recessed inwardly to open a semicircular guide groove portion, and the left and right two semicircular guide groove portions are respectively connected to the "U"-shaped shell seat 18. The left and right semicircular groove walls of the through-shaped long groove portion are arranged in an adaptive state corresponding to each other, and the front and rear ends of the left semicircular guide groove portion and the front and rear ends of the right semicircular guide groove portion are rotatably connected with rollers. After the movable seat 19 is placed, the rollers are movably clamped on the semicircular groove walls of the through-shaped long groove portion of the "U"-shaped shell seat 18, and because the transverse frame body of the driven "U"-shaped frame 24 is fixed to the outer side wall of the movable seat 19 by bolts, when the upper and lower driven "U"-shaped frames 24 slide backward, the upper and lower movable seats 19 are synchronously driven to move, so that the upper and lower movable seats 19 are respectively assisted by rollers to slide backward on the "U"-shaped shell seat 18;

[0059] Since the rod body of the toggle member 22 is arranged symmetrically about the vertical central axis of the protruding block, and the upper end of the rod body is fixedly mounted with a disc portion by bolts, and since the toggle member 22 is movably mounted in the middle of the movable seat 19, and the rod body is movably inserted into the lumen of the movable seat 19, the toggle member 22 is movably positioned on the movable seat 19, and when the upper and lower movable seats 19 slide backward, the upper and lower toggle members 22 are driven to move backward synchronously respectively;

[0060] According to the attached Figure 7 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, a circular groove 20 is provided on the left longitudinal side wall and the right longitudinal side wall of the "U"-shaped shell seat 18. The circular groove 20 is divided into a front inclined groove, an upper horizontal groove, a rear inclined groove and a lower horizontal groove from front to back. The round pin rod 25 is mirrored with respect to the vertical center axis of the protruding block portion of the toggle member 22. A limit bolt is installed at the sliding connection between the round pin rod 25 and the protruding block portion of the toggle member 22. A slide groove portion is provided on the side wall of the wide portion of the protruding block portion of the toggle member 22. After the round pin rod 25 is placed, it is movably inserted into the wide portion of the lumen of the protruding block portion of the toggle member 22, and the limit bolt movably penetrates the slide groove portion of the toggle member 22 and is threadedly connected at its end. , since the left and right round pins 25 are respectively arranged in a corresponding state with the left and right circular grooves 20, and the diameter of the round pin 25 is arranged in a matching state with the width of the circular groove 20, and since the second spring 26 is arranged in the gap between the left and right round pins 25, one end of the second spring 26 abuts against the side wall of the left round pin 25, and the other end of the second spring 26 abuts against the side wall of the right round pin 25, when the movable seat 19 is in the initial state, the round pin 25 shrinks in the lumen of the toggle member 22, the second spring 26 is squeezed and elastically deformed, and the end of the round pin 25 is movably inserted in the connection between the front inclined groove and the upper horizontal groove in the circular groove 20;

[0061] Since the end of the first limit claw 31 is provided with an inclined side wall, a limit bolt is installed on the plate body, and the first limit claw 31 is movably installed at the connection between the front inclined groove path and the upper horizontal groove path in the circular groove 20, and is placed in the cavity of the groove wall in the circular groove 20. The first limit claw 31 is restricted by the groove cavity and can only be telescopically slidable, and the limit bolt is movably inserted through the slide groove part on the "U"-shaped shell seat 18 and is threadedly connected at its end. In addition, since the fourth spring 32 is arranged between the first limit claw 31 and the circular groove, the first limit claw 31 can only be telescopically slidable. At the sliding connection of the groove wall in the circular groove 20, one end thereof abuts against the side wall of the first limiting claw 31, and the other end thereof abuts against the cavity wall, the end of the first limiting claw 31 is inserted into the upper horizontal groove of the circular groove 20, wherein the inclined side wall faces the upper horizontal groove of the circular groove 20, and when the toggle member 22 moves backward, it is blocked and limited by the first limiting claw 31, so that the left and right round pin rods 25 slide along the front inclined groove in the left circular groove 20 and the front inclined groove in the right circular groove 20 respectively;

[0062] Since the front inclined groove in the round-shaped groove 20 is set in a closed state, and the lower horizontal groove is set in an open state, that is, the groove depth of the front inclined groove in the round-shaped groove 20 is smaller than the groove depth of the lower horizontal groove, the rear section of the lower horizontal groove in the round-shaped groove 20 is set in a wide structure, and the width of the front end of the lower horizontal groove, the width of the front inclined groove and the width of the upper section of the rear inclined groove are all the same as the width of the upper horizontal groove, and the spacing between the groove wall of the lower horizontal groove in the round-shaped groove 20 and the side wall of the limiting strip 21 is equal to the width of the round-shaped groove 20. The width of the upper horizontal groove is sized. Since the connecting part of the front inclined groove and the lower horizontal groove in the round groove 20 is provided with an inclined groove wall for auxiliary sliding, after the round pin rod 25 slides along the front inclined groove in the round groove 20, it is assisted by the inclined groove wall to slide into the lower horizontal groove in the round groove 20. After the round pin rod 25 loses the obstruction, it is reset by the elastic deformation of the second spring 26, so that the round pin rod 25 slides out on the convex part of the toggle member 22, and the round pin rod 25 is movably inserted into the gap between the side wall of the limiting strip plate 21 and the groove wall of the lower horizontal groove.

[0063] Since the first spring 23 is arranged at the sliding connection between the rod body of the toggle member 22 and the movable seat 19, the first spring 23 is movably sleeved on the rod body of the toggle member 22, and one end of the first spring 23 abuts against the disc portion of the rod body of the toggle member 22, and the other end of the first spring 23 abuts against the inner wall of the tube cavity of the movable seat 19. Since the toggle member 22 is arranged vertically in the shell cavity of the "U"-shaped shell seat 18, the rubber head 27 is installed on the narrow part of the protrusion of the toggle member 22. When the round pin rod 25 slides, the first spring 23 is movably sleeved on the rod body of the toggle member 22, and one end of the first spring 23 abuts against the disc portion of the rod body of the toggle member 22, and the other end of the first spring 23 abuts against the inner wall of the tube cavity of the movable seat 19. To the lower horizontal groove in the circular groove 20, the toggle member 22 moves synchronously with the position movement of the round pin rod 25, and the upper and lower toggle mechanisms 17 are arranged in a mirror image, so that the rod body of the upper toggle member 22 slides downward in the upper movable seat 19, and the rod body of the lower toggle member 22 slides upward in the lower movable seat 19. After the upper and lower toggle members 22 slide, the first spring 23 is squeezed and elastically deformed, and the hardware plate is clamped and locked by the rubber head 27;

[0064] According to the attached Figure 2 , Figure 4 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13As shown, the first clamping jaw 12 is arranged in an inclined state at the upper part of the cover cavity in the square box cover 10, and after the arrangement, the upper end portion thereof is bolted on the upper cover wall of the square box cover 10 to form a rotating structure, and it is arranged in a front-to-back mirror state with respect to the vertical center axis of the square box cover 10, and the second clamping jaw 13 is arranged in an inclined state at the lower part of the cover cavity in the square box cover 10, and after the arrangement, the lower end portion thereof is bolted on the lower cover wall of the square box cover 10 to form a rotating structure, and it is arranged in a front-to-back mirror state with respect to the vertical center axis of the square box cover 10, because the overall structure of the first clamping jaw 12 is the same as the overall structure of the second clamping jaw 13, and the first clamping jaw 12 corresponds to the second clamping jaw 13 and is arranged in opposite inclined directions, the combination forms an "eight" shape. The structure is as follows: the rubber roller 29 in the first clamping jaw 12 and the rubber roller 29 in the second clamping jaw 13 are arranged in a corresponding state. After the rubber roller 29 in the first clamping jaw 12 is placed, it is rotatably connected to the groove cavity at the lower end thereof. After the rubber roller 29 in the second clamping jaw 13 is placed, it is rotatably connected to the groove cavity at the upper end thereof. Moreover, since the connection between the first clamping jaw 12 and the upper cover wall of the square box cover 10 and the connection between the second clamping jaw 13 and the lower cover wall of the square box cover 10 are both equipped with torsion springs 30, after the torsion spring 30 in the first clamping jaw 12 is placed, one end of the torsion spring 30 is clamped on the plate body of the first clamping jaw 12, and the other end of the torsion spring 30 is clamped on the upper cover wall of the square box cover 10. After the torsion spring 30 in the second clamping jaw 13 is placed, one end of the torsion spring 30 is clamped on the plate body of the second clamping jaw 13, and the other end of the torsion spring 30 is clamped on the upper cover wall of the square box cover 10 0, when the upper and lower rubber heads 27 clamp and lock the hardware plate conditions, the round pin rod 25 slides to the gap between the side wall of the limiting strip plate 21 and the groove wall of the lower horizontal groove. After the movable seat 19 continues to slide, the round pin rod 25 continues to slide backward along the side wall of the limiting strip plate 21, and the upper and lower rubber heads 27 clamp the hardware plate conditions, and with the assistance of the feeding groove wheel 16, the hardware plate conditions are driven to move for feeding. When the round pin rod 25 slides to the end of the limiting strip plate 21 and separates from it, the round pin rod 25 loses its limit, and the elastic deformation of the first spring 23 is used to reset, so that the toggle member 22 drives the round pin rod 25 to reset and slide upward on the movable seat 19, and the round pin rod 25 is against the upper groove wall of the lower horizontal groove. At this time After the first conveying of the metal plate condition is completed, the upper and lower rubber heads 27 are separated and released from the clamping and locking of the metal plate condition. During the feeding process of the metal plate condition, the elastic support of the torsion spring 30 is used to make the first clamping jaw 12 drive the rubber roller 29 to flip downward, wherein the rubber roller 29 is pressed against the upper side wall of the metal plate condition, and the second clamping jaw 13 drives the rubber roller 29 to flip upward, wherein the rubber roller 29 is pressed against the side wall of the metal plate condition. After the rubber roller 29 is placed, its rotation connection has damping. The rubber roller 29 in the first clamping jaw 12 and the rubber roller 29 in the second clamping jaw 13 assist the feeding of the metal plate condition, and at the same time, the metal plate condition is positioned during the separation process of the rubber head 27 to avoid offset.

[0065] Since the rear inclined groove in the circular groove 20 is set in an open state, and the lower section of the rear inclined groove is set in a wide structure, and since the end of the second limit claw 33 is provided with an inclined side wall, a limit bolt is installed on the plate body, and the second limit claw 33 is movably installed at the connection between the rear inclined groove in the circular groove 20 and the lower horizontal groove, and is placed in the cavity of the groove wall in the circular groove 20. The second limit claw 33 can only be telescopically slid by the groove cavity, and the limit bolt movably penetrates the "U The slide groove portion on the "-shaped shell seat 18" is threadedly connected to its end, and is inserted into the lower horizontal groove of the circular groove 20, and the inclined side wall thereof faces the lower horizontal groove of the circular groove 20. The fifth spring 34 is arranged at the sliding connection between the second limiting claw 33 and the groove wall of the circular groove 20, one end of which is against the side wall of the second limiting claw 33, and the other end of which is against the cavity wall. After the toggle member 22 continues to move backward with the movable seat 19, the round pin rod 25 moves backward along the upper groove wall of the lower horizontal groove. When the round pin rod 25 contacts the second limiting claw 33, the second limiting claw 33 is pushed and retracted into the groove cavity with the assistance of the inclined side wall of the second limiting claw 33, and the fifth spring 34 is squeezed and elastically deformed. According to the above, the active "U"-shaped frame 5 slides down to the specified position and is restricted and blocked by the vertical shell seat 7. The cylinder 2 continues to stretch downward, so that the push-pull rod 3 slides on the sleeve part of the active "U"-shaped frame 5, and the reset spring 6 is squeezed and elastically deformed. After the push-pull rod 3 drives the drilling mechanism 4 to move downward continuously, the drilling operation is completed. When the active "U"-shaped frame 5 slides down to the specified position, the driven "U"-shaped frame 24 drives the movable seat 19 and the toggle member 22 to slide backward to the specified position, so that the round pin rod 25 is separated from the second limiting claw 33 and enters the rear inclined groove. After the second limiting claw 33 loses its obstruction, the elastic deformation of the fifth spring 34 is used to reset the second limiting claw 33, so that the second limiting claw 33 is reset and slid out to limit the round pin rod 25.

[0066] Since the upper horizontal groove in the circular groove 20 is set in a closed state, the front inclined groove and the rear inclined groove in the circular groove 20 are set in the same inclined direction, and the connecting part of the rear inclined groove and the upper horizontal groove is also provided with an auxiliary sliding inclined groove wall. According to the above, the cylinder 2 is started to retract upward, and the elastic deformation of the reset spring 6 and the third spring 28 is reset, so that the push-pull rod 3 drives the active "U"-shaped frame 5 to reset and slide upward on the vertical shell seat 7, and the transmission of the gear column 9 is used to make the driven "U"-shaped frame 24 reset and slide forward on the horizontal shell seat 8, and the movable seat 19 drives the toggle member 22 to reset and move forward synchronously on the "U"-shaped shell seat 18. When the toggle member 22 resets and moves forward, the first spring 2 3, the toggle member 22 is reset and slid upward on the movable seat 19, and the round pin rod 25 slides along the rear inclined groove in the circular groove 20. With the assistance of the inclined groove wall, the round pin rod 25 performs a reset and contraction movement on the toggle member 22, and the round pin rod 25 slides into the upper horizontal groove in the circular groove 20. After the toggle member 22 continues to reset forward, the round pin rod 25 resets and slides forward along the upper horizontal groove. With the assistance of the inclined side wall in the first limiting claw 31, the first limiting claw 31 is contracted and slid, and the round pin rod 25 resets and slides to the connection between the front inclined groove and the upper horizontal groove. The elastic deformation of the fourth spring 32 is reset, so that the first limiting claw 31 limits the round pin rod 25 again.

[0067] Summary of working principle: Before using the feeding mechanism applied to the punching of hardware strips, it is necessary to adjust the spacing between the left and right guide strips 14 and the positions of the left and right guide strips 14 on the feed frame 11, and it is necessary to adjust the position of the rubber head 27 on the toggle member 22, and it is necessary to adjust the position of the limit strip 21. When using the feeding mechanism applied to the punching of hardware strips, after the hardware plate is placed, the cylinder 2 is started to extend, so that the push-pull rod 3 drives the drilling mechanism 4 to move in the shell cavity of the tube shell frame 1, and the push-pull rod 3 drives the active "U"-shaped frame 5 to slide on the vertical shell seat 7, and the gear column 9 is used to drive the driven "U"-shaped frame 24 to slide on the horizontal shell seat 8, and after the driven "U"-shaped frame 24 slides, it drives the movable seat 19 to slide synchronously on the "U"-shaped shell seat 18, so that the toggle member 22 moves synchronously with the movable seat 19, and The round pin rod 25 slides along the front inclined groove in the circular groove 20 to the lower horizontal groove. With the help of the rubber head 27, the upper and lower toggle members 22 clamp and lock the hardware plate conditions. After the movable seat 19 continues to slide, the hardware plate conditions are driven to move synchronously for feeding through the clamping of the upper and lower toggle members 22 and the assistance of the feeding groove wheel 16. When the round pin rod 25 is separated from the limiting strip 21, the elastic deformation of the first spring 23 is used to reset the toggle member 2 2 drives the rubber head 27 to lose the clamping, completing the one-time conveying of the hardware plate conditions, the toggle member 22 continues to move with the movable seat 19, the round pin rod 25 slides along the lower horizontal groove to the rear inclined groove, and the cylinder 2 is started to shrink, driving the active "U"-shaped frame 5 and the driven "U"-shaped frame 24 to reset and slide, so that the movable seat 19 drives the toggle member 22 to reset and slide on the "U"-shaped shell seat 18, and the round pin rod 25 slides along the rear inclined groove to the upper horizontal groove to complete the reset;

[0068] This is the entire working process of the feeding mechanism used for punching holes in metal strips. Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0069] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0070] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A feeding mechanism used for punching holes in metal strips, comprising: A tube shell frame (1), wherein a cylinder (2) is fixedly mounted on an upper side wall of a shell cover of the tube shell frame (1) by means of bolts; It is characterized by further comprising: A push-pull rod (3), wherein the connecting disk portion of the push-pull rod (3) is sleeved and fixedly connected to the end of the output rod body of the cylinder (2) by bolts, and a drilling mechanism (4) is fixedly installed on the fixed disk portion of the push-pull rod (3) by bolts, and the rod body of the push-pull rod (3) forms an up-and-down sliding structure on the sleeve portion of the active "U"-shaped frame (5), and a return spring (6) is installed at the sliding connection between the active "U"-shaped frame (5) and the push-pull rod (3); Wherein, the left and right longitudinal frames of the active "U"-shaped frame (5) are both movably sleeved with vertical shell seats (7), and the vertical shell seats (7) are inserted and fixedly connected to the groove of the shell cavity wall in the tube shell frame (1) by bolts; The vertical housing seat (7) is sequentially clamped and installed with two transverse housing seats (8) from top to bottom, and the transverse housing seat (8) is fixedly connected to the housing wall of the tube housing frame (1) by bolts and is arranged in a vertical state with the vertical housing seat (7), and a gear column (9) is rotatably connected to the connection between the transverse housing seat (8) and the vertical housing seat (7), and the rear side of the gear column (9) is connected to the rack portion of the active "U"-shaped frame (5) in a meshing manner; A square box cover (10), the square box cover (10) being fixedly arranged in the middle of the shell cavity of the tube shell frame (1), and a material conveying frame (11) corresponding to the square box cover (10) being vertically installed in the middle of the tube shell frame (1), and a connecting frame portion of the material conveying frame (11) being sleeved and fixedly connected to the shell wall of the tube shell frame (1) by bolts; The upper part of the cover cavity of the square box cover (10) is movably mounted with a first clamping jaw (12) in an inclined state, and the first clamping jaw (12) forms a flip structure in the upper cover cavity of the square box cover (10); the lower part of the cover cavity of the square box cover (10) is movably mounted with a second clamping jaw (13) in an inclined state, and the second clamping jaw (13) forms a flip structure in the lower cover cavity of the square box cover (10); Wherein, in the material conveying frame (11), both left and right tube cavities of the feeding square tube frame part and left and right tube cavities of the discharging square tube frame part are movably installed with material guide strips (14) that can be slidably adjusted, and movable bolts (15) for adjustment are installed on the plate body of the material guide strips (14), and material conveying groove wheels (16) are rotatably connected at equal intervals in the groove cavity of the material guide strips (14); A toggle mechanism (17), the toggle mechanism (17) being arranged in a mirror image state with respect to a horizontal central axis of a feeding square tube frame portion in the feeding frame (11), the toggle mechanism (17) comprising a "U"-shaped shell seat (18), a movable seat (19), a circular groove (20), a limiting strip plate (21) and a toggle member (22); A movable seat (19) is movably mounted in the through-shaped long groove of the "U"-shaped shell seat (18), and the movable seat (19) is assisted by rollers to form a sliding structure on the "U"-shaped shell seat (18), and a circular groove (20) is provided on the left longitudinal side wall and the right longitudinal side wall of the "U"-shaped shell seat (18), and a limiting strip plate (21) for blocking is provided on the lower horizontal groove of the circular groove (20), and the limiting strip plate (21) forms a sliding structure on the longitudinal side wall of the "U"-shaped shell seat (18), and a fixing bolt for locking is installed at the connection between the limiting strip plate (21) and the longitudinal side wall of the "U"-shaped shell seat (18); The movable seat (19) is provided with a toggle member (22) that can slide up and down, and a first spring (23) is provided at the sliding connection between the rod body of the toggle member (22) and the movable seat (19). The outer wall of the movable seat (19) is fixedly connected to the transverse frame body of the driven "U"-shaped frame (24) by bolts, and the longitudinal frame body of the driven "U"-shaped frame (24) forms a sliding structure in the cavity of the transverse shell seat (8) with the assistance of rollers, and the rack portion of the driven "U"-shaped frame (24) is connected to the upper side of the gear column (9) in a meshing manner. A round pin rod (25) capable of telescopic sliding is movably inserted into the tubular cavity of the wide portion of the protruding block of the toggle member (22), a second spring (26) is installed in the gap between the left and right round pin rods (25) in the toggle member (22), and the end of the round pin rod (25) is movably inserted into the circular groove (20), a rubber head (27) capable of sliding adjustment is movably clamped on the narrow portion of the protruding block of the toggle member (22), and a fixing bolt for locking is installed at the sliding connection between the rubber head (27) and the protruding block of the toggle member (22).

2. A feeding mechanism for punching holes in metal strips according to claim 1, characterized in that: The longitudinal plate in the active "U"-shaped frame (5) forms an up-and-down sliding structure in the cavity of the vertical shell seat (7) with the assistance of rollers, and a third spring (28) is installed at the connection between the longitudinal plate in the active "U"-shaped frame (5) and the vertical shell seat (7).

3. The feeding mechanism for punching holes in metal strips according to claim 1 is characterized in that: The first clamping jaw (12) and the second clamping jaw (13) are both arranged in a front-to-back mirrored state with respect to the vertical central axis of the square box cover (10), and the first clamping jaw (12) and the second clamping jaw (13) correspond to each other and are arranged in opposite inclined directions, a rotatable rubber roller (29) is movably installed in the groove cavity at the lower end of the first clamping jaw (12) and in the groove cavity at the upper end of the second clamping jaw (13), and a torsion spring (30) is installed at the connection between the first clamping jaw (12) and the upper cover wall of the square box cover (10) and the connection between the second clamping jaw (13) and the lower cover wall of the square box cover (10).

4. The feeding mechanism for punching holes in metal strips according to claim 1 is characterized in that: The round pin rod (25) is arranged in a left-right mirrored state with respect to the vertical center axis of the toggle member (22), and the toggle member (22) is arranged in a vertical state in the shell cavity of the "U"-shaped shell seat (18), and the round pin rod (25) forms a sliding structure in the circular groove (20).

5. A feeding mechanism for punching holes in metal strips according to claim 4, characterized in that: A first limiting claw (31) capable of telescopic sliding is movably installed at the connection between the front inclined groove path and the upper horizontal groove path in the circular groove (20), and a fourth spring (32) is installed at the sliding connection between the first limiting claw (31) and the groove wall in the circular groove (20), and the inclined side wall of the first limiting claw (31) faces the upper horizontal groove path of the circular groove (20); A second limiting claw (33) capable of telescopic sliding is movably installed at the connection between the rear inclined groove path and the lower horizontal groove path in the circular groove (20), a fifth spring (34) is installed at the sliding connection between the second limiting claw (33) and the groove wall in the circular groove (20), and the inclined side wall of the second limiting claw (33) faces the lower horizontal groove path of the circular groove (20).

6. A feeding mechanism for punching holes in metal strips according to claim 5, characterized in that: The front inclined groove path and the upper horizontal groove path in the circular groove (20) are both arranged in a closed state, and the rear inclined groove path and the lower horizontal groove path in the circular groove (20) are both arranged in an open state, and the rear section of the lower horizontal groove path and the lower section of the rear inclined groove path in the circular groove (20) are both arranged in a wide structure, and the spacing dimension between the groove wall of the lower horizontal groove path in the circular groove (20) and the side wall of the limiting strip plate (21) is equal to the width dimension of the upper horizontal groove path in the circular groove (20).

Images