CN100569411C - A stamping and forming machine for double hooks on anti-skid chains - Google Patents

Abstract

The invention discloses a stamping forming machine with double hooks on an anti-skid chain, which comprises a frame, a wire straightening mechanism and an intermittent feeding mechanism at the feeding end of the frame, a positioning frame for positioning the wire and a mould, and a positioning frame There is a first action mechanism for punching vertically from top to bottom directly above, a second action mechanism for punching from both sides to the middle under both sides of the positioning frame, and a third action mechanism for punching horizontally from front to back in front of the positioning frame. The action mechanism, wherein the second action mechanism is composed of the left stamping mechanism and the right stamping mechanism with the same structure and symmetrical arrangement; the first action mechanism and the second action mechanism are on the same stamping plane, and the stamping direction of the third action mechanism is vertical The stamping plane. This technical solution integrates wire straightening, feeding and cutting, and multiple punching into one machine. It only needs to cooperate with a simple mold to punch the wire into a double-hook finished product at one time. It has fully automatic operation, high work efficiency, safety and reliability. Etc.

Description

A stamping and forming machine for double hooks on anti-skid chains

technical field

The invention belongs to the field of stamping and forming equipment for wire (rod) materials, in particular to a stamping and forming machine for manufacturing double hooks and similar parts used on anti-skid chains of automobiles.

Background technique

The automobile anti-skid chain is composed of side chains fixed on both sides of the tire and a cross chain fixedly connected to the two side chains through double hooks to play an anti-skid effect. On the side chain, the hook belly (A) part is used to hang buckle cross chains. In the prior art, the manufacture of double hooks usually involves first straightening the disc-shaped wire rod, cutting the material according to the size and length of the double hooks, and then putting the small section of material into the die groove of the punch press to punch it into a U shape (forming the belly part of the hook), and then Put the U-shaped half-ring material into another die groove and punch it into double hooks (forming the claw position). Such a production method has high labor intensity, low efficiency, poor safety, and unstable quality.

Contents of the invention

In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a stamping and forming machine for double hooks on anti-skid chains, which can straighten wires, feed and cut materials, and multiple stampings on one machine, and only need to cooperate with a simple mold. The whole coil of wire can be stamped at one time to form a double-hook finished product, which has the characteristics of fully automatic operation, high work efficiency, safety and reliability.

In order to achieve the above-mentioned purpose, the present invention has adopted following technical scheme:

A stamping forming machine with double hooks on an anti-skid chain, comprising a frame, the feed end of the frame is provided with a wire straightening mechanism and an intermittent feeding mechanism, the frame is provided with a positioning frame for positioning the wire and a mold, and the positioning frame There is a first action mechanism for punching vertically from top to bottom directly above, a second action mechanism for punching from both sides to the middle under both sides of the positioning frame, and a third action mechanism for punching horizontally from front to back in front of the positioning frame. The action mechanism, wherein, the second action mechanism is composed of a left stamping mechanism and a right stamping mechanism with the same structure and symmetrical arrangement; the first action mechanism and the second action mechanism are on the same stamping plane, and the first action mechanism The stamping direction of the three action mechanisms is perpendicular to the stamping plane; the intermittent feeding mechanism, the first action mechanism, the second action mechanism, and the third action mechanism are respectively connected with the transmission mechanism arranged on the frame, and the transmission mechanism is connected with the working mechanism. Motor drive connection.

By setting the straightening mechanism and the intermittent feeding mechanism, the adjustment, straightening and intermittent feeding of the wire are completed; the positioning frame for positioning the wire and the vertical punching effect of the upper forming die are used to complete the positioning of the broken wire; by setting the vertical punching mechanism, The stamping mechanism on the left and right sides and the horizontal stamping mechanism complete the wire stamping from three dimensions and multiple directions to form a double-hook finished product; first, the first action mechanism drives the upper forming die to punch down to complete the material breaking and stamp a small section of wire into a U shape; secondly, The second action mechanism drives the left and right punches to press towards the center, and after the two arms of the U-shaped wire are slightly closed, the left and right punches return to their positions. Then, the third action mechanism drives the push head to punch toward the back of the machine tool, and punches the two arms of the U-shaped wire. Bending to form a double hook, finally, push the head to push the double hook out of the mold, each action mechanism returns, the intermittent feeding mechanism pushes the wire into the mold, and the machine enters the processing of the next workpiece.

As preferably, the above-mentioned first action mechanism includes a sliding table seat fixed on the frame, and the sliding table seat is vertically slidably connected to the sliding table of the upper molding die. The sliding table is provided with two pull rods, the pull rods pass through the frame top plate, and A spring is sheathed at the exit part of the frame. One end of the spring is against the top plate of the frame, and the other end is against the pull rod. The upper end of the slide table is provided with a roller, which is in contact with the eccentric cam on the frame, and the eccentric cam is connected to the transmission mechanism.

Because the volume of the double hook is relatively small, the required stamping force and stability requirements are also relatively low, so it is more reasonable to use the slide table for stamping and eccentric cam push to save costs.

Preferably, a connecting plate is movably connected to the eccentric cam, and the other end of the connecting plate is movably connected to the slide table. The return force of the sliding table can be provided by the spring on the pull rod, or by the pulling force generated by the connecting plate driven by the rotation of the eccentric cam, or by both, so as to improve the efficiency of the machine and reduce the loss of the machine.

As preferably, the above-mentioned left stamping mechanism includes a slider seat fixed on the frame wallboard, a slider for installing the left punch is slidably connected to the slider seat, a connecting rod is movably connected to the slider, and the other end of the connecting rod is connected to the left side. The eccentric wheel is flexibly connected, and the left eccentric wheel is connected to the transmission mechanism. The right stamping mechanism has the same structure, but is arranged symmetrically. The required force and action time of the left and right punches are relatively short, so it is more reasonable to use the eccentric wheel connecting rod to drive and save costs.

The above-mentioned third action mechanism includes a push block seat fixed on the frame. The push block seat is horizontally slidably connected to the push block for installing the push head. The end of the push block is provided with a roller, and the roller contacts the eccentric cam arranged on the frame. A connecting plate is movably connected to the cam, and the other end of the connecting plate is movably connected to the push block, and the eccentric cam is connected to the transmission mechanism. The structure of the third action mechanism is basically the same as that of the first action mechanism, except that the influence of gravity is less, so the return pulling force can be provided by the connecting plate.

Preferably, the above-mentioned transmission mechanism includes a central gear rotatably arranged on the frame, and a gear is meshed above the central gear. The gear is connected to the working motor through the coaxial transmission gear and pulley set on the frame; the left side of the central gear is meshed with a gear, and the front end of the gear shaft is sleeved with the left eccentric wheel of the left stamping mechanism; the right side of the central gear is A gear is meshed, and the front end of the gear shaft is sleeved with the right eccentric wheel of the right punching mechanism; a gear is meshed under the central gear, and the front end of the gear shaft is sleeved with a bevel gear and a rotating shaft of the eccentric cam in the third action mechanism. The bevel gears are meshed, and the rear end of the gear shaft is covered with an eccentric connecting rod, the eccentric connecting rod is movably connected with a connecting rod, and the other end of the connecting rod is movably connected with the intermittent feeding mechanism. The gear transmission has a stable transmission ratio, the machine runs stably, and the coordination of each mechanism is accurate.

Preferably, the above-mentioned straightening mechanism is composed of two roller sets arranged vertically and horizontally.

Preferably, the above-mentioned intermittent feeding mechanism includes at least one driven wheel and at least one driving wheel that cooperate with each other. The rotating shaft of the driving wheel is connected to the swing gear after passing through the one-way clutch. connect.

The connecting rod drives the swing rod and the swing gear to swing back and forth, because there is a one-way clutch in the transmission connection between the swing gear and the driving wheel, so that the swing gear can only drive the drive wheel to rotate in one direction, and the drive wheel and the matching roller clamp the wire And it can push the wire forward to achieve the purpose of intermittent feeding.

Since the present invention adopts the above technical scheme, by setting the straightening mechanism and the intermittent feeding mechanism, the adjustment, straightening and intermittent feeding of the wire are completed; Material positioning; by setting the vertical stamping mechanism, horizontal stamping mechanism and left and right stamping mechanisms, the wire stamping is completed from three dimensions and multiple directions to form a double-hook finished product; the wire straightening, feeding and cutting, and multiple stamping are assembled on one machine. Only with a simple mold, the wire can be stamped into a double-hook finished product at one time, which has the advantages of fully automatic operation, high work efficiency, safety and reliability.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is a schematic diagram of the side structure of FIG. 1 .

Fig. 3 is a structural schematic diagram of the first action mechanism and the second action mechanism.

Fig. 4 is a schematic diagram of the transmission connection relationship between the first action mechanism, the second action mechanism, the intermittent feeding mechanism and the transmission mechanism.

Fig. 5 is a schematic diagram of the transmission connection relationship between the third action mechanism and the transmission mechanism.

Fig. 6 is a structural schematic diagram of a double hook finished product.

FIG. 7 is a schematic cross-sectional view of the front end of the push head in Embodiment 1. FIG.

Detailed ways

The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings.

Example 1:

A stamping and forming machine with double hooks on an anti-skid chain as shown in Figures 1 and 2, includes a frame 4, and the feed end of the frame 4 is provided with a wire straightening mechanism 2 and an intermittent feeding mechanism 3, and the frame 4 is provided with the positioning frame 11 of positioning wire rod and mould, and the first action mechanism 5 that is punched vertically from top to bottom is arranged on the top of the positioning frame 11, and the bottom of the positioning frame 11 two sides is provided with the first action mechanism 5 that is stamped from both sides to the middle. Two action mechanisms, the front of the positioning frame 11 is provided with a third action mechanism 8 that is punched horizontally from front to back, wherein the second action mechanism is composed of a left stamping mechanism 7 and a right stamping mechanism 10 with the same structure and symmetrical arrangement ; The first action mechanism 5 and the second action mechanism stamp on the same stamping plane, and the third action mechanism 8 stamps along the stamping plane perpendicular to it; the intermittent feeding mechanism 3, the first action mechanism 5, the second The second action mechanism and the third action mechanism 8 are respectively connected with the transmission mechanism arranged on the frame 4 , and the transmission mechanism is connected with the working motor 12 by transmission.

As shown in Figure 3, the above-mentioned first action mechanism 5 includes a sliding table seat 53 fixed on the wallboard of the frame 4, and the sliding table seat 53 is vertically slidably connected with a sliding table 52 on which the upper molding die 6 is installed through a V-shaped groove. Two pull rods 55 are arranged on the platform 52, and the pull rods 55 pass through the top plate of the frame 4, and a spring 54 is sleeved on the passing position of the pull rods 55, and one end of the spring 54 is offset against the top plate of the frame 4, and the other end is offset against the pull rod 55. The upper end of the slide table 52 is provided with a roller, which presses against the eccentric cam 51 arranged on the frame 4, and the eccentric cam 51 is connected to the transmission mechanism; the above-mentioned eccentric cam 51 is movably connected with a connecting plate 57, and the other end of the connecting plate 57 is provided with a waist The hole, the waist hole is inserted with a bolt that is fastened and fixed on the slide table 52. The rotation of the eccentric cam 51 can be intermittently converted into the lifting power of the slide table 52. Here, the spring force provided by the spring 54 can offset the slide table 52 and the upper. The gravity of the molding die 6 reduces the rotational moment loaded when the eccentric cam 51 rotates. Whether to set connecting plate 57 and waist hole here is to decide according to the spring force of eccentric cam 51 and the pushing fit situation of roller and spring 54.

As shown in FIG. 3 , the left punching mechanism 7 and the right punching mechanism 10 have the same structure and are arranged symmetrically. According to the shape of the punch and the shape of the double hook to be processed, the punching mechanism on both sides is arranged symmetrically to point to the punching center. The above-mentioned left punching mechanism 7 includes a slider seat 74 fixed on the frame 4 wallboard. The dovetail groove is slidably connected with a slide block 73 that installs the left punch 75, and the slide block 73 is movably connected with a connecting rod 72, and the other end of the connecting rod 72 is movably connected with the left eccentric wheel 71, and the left eccentric wheel 71 is connected to the transmission mechanism.

As shown in Figure 2, the above-mentioned third action mechanism 8 includes a push block seat 83 fixed on the stool seat at the front of the frame 4, and the push block seat 83 is horizontally slidably connected with a push block 84 for installing a push head 85 through a dovetail groove. The end of the push block 84 is provided with a roller, which is in contact with the eccentric cam 81 arranged on the frame 4, and a connecting plate 82 is movably connected to the eccentric cam 81, and the other end of the connecting plate 82 is movably connected with the push block 84, and the eccentric cam 81 Connect the drive mechanism.

As shown in Fig. 4 and Fig. 5, the above-mentioned transmission mechanism includes a central gear 19 rotatably arranged on the frame 4, and a gear 56 is meshed above the central gear 19, and the front end of the shaft of the gear 56 is sleeved with an eccentric cam 51 in the first action mechanism 5. The rear end of the gear 56 shaft is covered with a reduction gear 13, and the reduction gear 13 is connected to the working motor 12 through the coaxially driven gear 141 and the pulley 14 arranged on the frame 4; the left side of the central gear 19 is meshed with Gear 76, the front end of the gear 76 shaft is sleeved with the left eccentric wheel 71 of the left punching mechanism 7; the right side of the central gear 19 is meshed with a gear 106, and the front end of the gear 106 shaft is sleeved with the right eccentric wheel of the right punching mechanism 10; the central gear Gear 86 is meshed below 19, and the front end of the gear 86 shaft is provided with a bevel gear to engage with the bevel gear on the rotating shaft of the eccentric cam 81 in the third action mechanism 8, and the rear end of the gear 86 shaft is provided with an eccentric coupling. The rod 20 is movably connected with a connecting rod 17 on the eccentric connecting rod 20, and the other end of the connecting rod 17 is movably connected with the intermittent feeding mechanism 3.

The above-mentioned intermittent feeding mechanism 3 includes 2 driven wheels that cooperate with each other and 2 driving wheels 31 synchronously driven by gears. A one-way clutch 32 is connected between the rotating shaft of the driving wheels 31 and the gear 33, and the gear 33 meshes with the swing gear 15. For transmission, the swing gear 15 is fixed with a swing rod 16, which is flexibly connected with the connecting rod 17. Wherein, the gap between the driving wheel 31 and the driven wheel can be adjusted by adjusting the compression screw.

Above-mentioned straightening mechanism 2 is made up of two roller sets that are arranged vertically and horizontally. Each roller set contains five matching rollers, and the wire 1 passes through the middle of the five rollers, passes through the straightening mechanism 2 and is straightened, then passes between the driven wheel and the driving wheel 31, and is compressed by the driving wheel 31 , and then pass through the through hole on the left part of the cable pipe 18 and the positioning frame 11 that are located on the frame 4 wallboards, and enter the stamping position of the machine platform.

The upper forming die 6 is fixed on the lower end of the slide table 52, the lower end of the upper forming die 6 is provided with a semicircular groove 61, and the lower forming die 9 matched with it is fixed in the middle of the positioning frame 11, and the lower forming die 9 is provided with a semicircular groove 61. The matching semicircle boss 91, the height of the semicircle boss 91 matches the diameter of the wire rod 1, the bottom of the semicircle boss 91 is provided with a square through hole 92 matching the push head 85, and the end of the square through hole 92 is connected with a slide Material passage, the lower left side of the upper forming die 6 is provided with a cutting knife, which is used to cut off the wire rod when the first action mechanism punches downwards.

When processing double hooks, start the power supply, the working motor 12 drives the transmission mechanism to work, the transmission mechanism drives the intermittent feeding mechanism to move, the wire 1 is sent between the upper and lower molds of the machine, and the transmission mechanism drives the first action mechanism 5 and then drives the upper forming mold 6 to vertically Stamping downward, the wire 1 is cut off during the downward stamping process, and the wire 1 is punched into an inverted U shape between the semicircular groove 61 and the semicircular boss 91, and the transmission mechanism drives the second action mechanism and then drives the left and right punches to Center stamping, so that the two arms of the inverted U-shaped wire are slightly retracted under the stamping action, and then the transmission mechanism drives the third action mechanism to drive the pusher 85 to press horizontally from front to back to the center (the cross section of the pusher is shown in Figure 7). During the stamping process, the two arms of the inverted U-shaped wire are bent, and the wire escapes from the semicircular boss 91 and is pushed into the square through hole 92 to form a double hook that meets the requirements. The push head 85 continues to push forward to push the double hook out of the square through hole 92 , falls into the sliding channel, slides out of the mold of the machine, the third action mechanism returns under the drive of the transmission mechanism, and at the same time the first action mechanism 5 also returns to complete the processing of a workpiece, and the machine enters under the action of the transmission mechanism. The next workpiece is processed. In this way, after the machine table and the mold are adjusted, the double hooks can be stamped fully automatically, and no manual operation is required.

The present invention is not limited to the above specific embodiments, as long as the vertical stamping mechanism, the horizontal stamping mechanism, and the left and right stamping mechanisms are set up to complete the wire stamping from three dimensions and multiple directions to form a finished workpiece, no matter what method is used to drive the stamping, No matter what kind of transmission mechanism is used for synchronous transmission and cooperation, it will fall within the protection scope of the present invention.

Claims (7)

1. the impact molding machine of a double-hook on antiskid chain, comprise frame (4), it is characterized in that, described frame (4) feed end is provided with wire rod straightening mechanism (2) and intermittent feeding mechanism (3), described frame (4) is provided with the locating rack (11) of positioning wire and mould, be provided with vertical first actuating mechanism (5) of punching press from top to bottom directly over the locating rack (11), locating rack (11) down either side is provided with second actuating mechanism by punching press in the middle of two side direction, locating rack (11) the place ahead be provided with level by forward direction after the 3rd actuating mechanism (8) of punching press, wherein, described second actuating mechanism is by same structure, symmetrically arranged left side punching mechanism (7) and right side punching mechanism (10) are formed; Described first actuating mechanism (5) and second actuating mechanism are on same punching press plane, and the pressing direction of described the 3rd actuating mechanism (8) is this punching press plane vertically; Described intermittent feeding mechanism (3), first actuating mechanism (5), second actuating mechanism, the 3rd actuating mechanism (8) respectively be located at frame (4) on transmission mechanism be connected, described transmission mechanism and work drive motor (12) are in transmission connection; Described left side punching mechanism (7) comprises the take-up housing (74) that is fixed on frame (4) wallboard, slidely connect the slide block (73) that left drift (75) is installed on the take-up housing (74), be connected with connecting rod (72) on the slide block (73), connecting rod (72) other end and left eccentric wheel (71) flexibly connect, and left eccentric wheel (71) connects transmission mechanism.

2. the impact molding machine of a kind of double-hook on antiskid chain according to claim 1, it is characterized in that, described first actuating mechanism (5) comprises the carriage saddle (53) that is fixed on the frame (4), vertically slidely connect the slide unit (52) of installing shaping mould (6) on the carriage saddle (53), slide unit (52) is provided with two pull bars (55), pull bar (55) passes frame (4) top board, pull bar (55) pass the sheathed spring in position (54), spring (54) one ends and frame (4) top board offset, the other end and pull bar (55) offset, described slide unit (52) upper end is provided with roller, roller touches with eccentric cam (51) pressure that is located on the frame (4), and eccentric cam (51) connects transmission mechanism.

3. the impact molding machine of a kind of double-hook on antiskid chain according to claim 2 is characterized in that, is connected with a plate (57) on the described eccentric cam (51), and connecting plate (57) other end and slide unit (52) flexibly connect.

4. the impact molding machine of a kind of double-hook on antiskid chain according to claim 3, it is characterized in that, described the 3rd actuating mechanism (8) comprises the block pushing seat (83) that is fixed on the frame (4), block pushing seat (83) is gone up horizontal slip and is connected with the pushing block (84) that cut somebody's hair (85) are installed, pushing block (84) end is provided with roller, roller contacts with eccentric cam (81) on being located at frame (4), be connected with a plate (82) on the eccentric cam (81), connecting plate (82) other end and pushing block (84) flexibly connect, and described eccentric cam (81) connects transmission mechanism.

5. the impact molding machine of a kind of double-hook on antiskid chain according to claim 4, it is characterized in that, described transmission mechanism comprises that rotation is arranged on the central gear (19) on the frame (4), central gear (19) top is engaged with gear (56), eccentric cam (51) in this gear (56) axle sheathed first actuating mechanism of front end (5), this gear (56) shaft rear end is arranged with reduction gearing (13), reduction gearing (13) through be arranged on the frame (4), be in transmission connection with work drive motor (12) with the gear (141) of through-drive and belt wheel (14); Central gear (19) left side is engaged with gear (76), the left eccentric wheel (71) of this gear (76) axle front end sheathed left side punching mechanism (7); Central gear (19) right side is engaged with gear (106), the right eccentric wheel of this gear (106) axle front end sheathed right side punching mechanism (10); Central gear (19) below is engaged with gear (86), this gear (86) axle front end sleeve is provided with the angular wheel engagement in angular wheel and the rotating shaft that is located at eccentric cam (81) in the 3rd actuating mechanism (8), this gear (86) shaft rear end is arranged with eccentric ratio (20), be connected with connecting rod (17) on the eccentric ratio (20), connecting rod (17) other end and intermittent feeding mechanism (3) flexibly connect.

6. the impact molding machine of a kind of double-hook on antiskid chain according to claim 5 is characterized in that, described straightening mechanism (2) is made of vertical setting and horizontally disposed two roller set.

7. the impact molding machine of a kind of double-hook on antiskid chain according to claim 6, it is characterized in that, described intermittent feeding mechanism (3) comprises at least one driven pulley and at least one driving wheel (31) that cooperatively interacts, the rotating shaft of driving wheel (31) is in transmission connection with wobble gear (15) behind one-way clutch (32), be fixed with fork (16) on the wobble gear (15), fork (16) flexibly connects with connecting rod (17).

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