Chain punching device

Abstract

The utility model discloses a chain punching device which comprises a base and a punching part arranged on the base in a lifting mode. A rotary air cylinder is arranged on the base, and a clamp matched with a chain link plate is arranged on the rotary air cylinder. A rotating shaft fixedly matched with the clamp is arranged on the rotating cylinder; after the chain link plate is matched with the clamp, the rotating shaft is located at the midpoint of the connecting line of the hole bodies on the two sides of the chain link plate, and the punching part and the hole body on any side are in the coaxial state. The clamp achieves coaxial matching switching of the hole bodies on the two sides and the punching part through rotation of the rotating shaft. Through the linkage design of the rotary air cylinder and the clamp, one-time clamping and two-time rotary positioning of chain link plate double-hole machining are achieved, and manual intervention and positioning errors are reduced; and the elastic clamping pin is matched with the ejection assembly, so that the clamping and unloading time is remarkably shortened, and the device is suitable for batch production.

Description

TECHNICAL FIELD

[0001] The utility model relates to chain production equipment technical field, especially a chain punching device. BACKGROUND

[0002] As a core component in mechanical transmission system, the machining precision of chain link plate directly affects the transmission performance and service life of chain. In the existing production process, the pin shaft hole machining of chain link plate is usually divided into two steps: first, the preformed hole of pin shaft hole is formed through stamping process, and then the preformed hole is finished by drilling equipment to meet the size precision and surface roughness requirements.

[0003] However, the existing drilling processing device has a significant efficiency bottleneck. Specifically, since the chain link plate needs to be machined with two symmetrically distributed pin shaft holes, the conventional equipment usually adopts a single drill bit structure. After machining the first hole, the drill bit needs to be moved or the workpiece clamping position needs to be adjusted to align the drill bit with the second hole for machining. This process requires additional positioning time or clamping time, which significantly reduces the efficiency of batch production and is not conducive to efficient production. SUMMARY

[0004] The utility model discloses in view of the prior art's insufficient, provides a kind of chain punching device, and rotating cylinder drives clamp overturn switching processing station, cooperate with the automatic unloading of elastic latch quick clamping and ejection assembly, significantly improve machining efficiency and positioning accuracy.

[0005] To solve the above technical problems, the utility model discloses the following technical scheme: a kind of chain punching device, including base and lifting punching portion on base;

[0006] Rotary cylinder is provided on the base, rotary cylinder is provided with the clamp that is compatible with chain link plate;

[0007] Rotary cylinder is provided with the pivot that is fixedly cooperated with clamp;

[0008] After chain link plate is cooperated with clamp, pivot is located at the midpoint of the connecting line of the hole body of both sides of chain link plate, and punching portion is coaxial with the hole body of any side;

[0009] The clamp is switched by the coaxial cooperation of the rotation of pivot with the hole body of both sides and punching portion.

[0010] In the above scheme, preferably, the base is provided with a switch matched with the punching portion, and the switch is electrically connected with the rotary cylinder.

[0011] In the above scheme, preferably, the clamp includes a cavity and a plurality of elastic latches provided on the side wall of the cavity, and the chain link plate is positioned by the latches after being loaded into the cavity.

[0012] In the above scheme, preferably, the clamping pin is an elastic pin, and the clamping pin is uniformly and spacedly arranged around the side wall edge of the cavity, and an arc transition surface is arranged at the end of the clamping pin.

[0013] In the above scheme, preferably, the jig is provided with a chip removal hole for the drill bit of the punching part to pass through when punching.

[0014] In the above scheme, preferably, the base is provided with an ejection assembly for ejecting the chain link plate from the jig.

[0015] The ejection assembly comprises an ejection cylinder and an ejector pin, and the ejector pin is coaxially arranged with the chip removal hole on any one side.

[0016] In the above scheme, preferably, the ejector pin is symmetrically arranged on both sides of the ejection cylinder, and the ejector pin is coaxially arranged with the chip removal hole on both sides, and a through hole is arranged in the ejector pin.

[0017] In the above scheme, preferably, the through hole is connected with a chip removal pipe.

[0018] In the above scheme, preferably, the switch is electrically connected with the ejection cylinder through a counter, and the switch is triggered, and the counter is fed back to the ejection cylinder to trigger the lifting of the ejection cylinder.

[0019] In the above scheme, preferably, the rotary cylinder comprises a rotary table, and the rotary shaft is arranged on the rotary table.

[0020] The ejection cylinder is arranged on one side of the rotary table, the ejection end of the ejection cylinder is provided with a lifting plate, the ejector pin is symmetrically arranged on both sides of the lifting plate, and the lifting plate is provided with a notch matched with the rotary shaft.

[0021] The beneficial effects of the utility model are as follows: through the linkage design of the rotary cylinder and the jig, one-time clamping and twice rotary positioning of the chain link plate double-hole machining are realized, manual intervention and positioning error are reduced, the cooperation of the elastic clamping pin and the ejection assembly significantly shortens the clamping and unloading time, and the utility model is suitable for batch production.

[0022] In addition, the integrated design of the chip removal hole and the through hole of the ejector pin takes into account the chip removal and ejection functions, improves the reliability of the equipment, and greatly improves the production efficiency of the chain link plate machining. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0024] Figure 2 It is a three-dimensional exploded structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0025] The utility model will be further described in detail in combination with the drawings and specific embodiments:Figures 1-2 .

[0026] As Figure 1 shown, the chain punching device includes a base 1 and a punching part 2 lifted on the base 1, the punching part 2 is a clamping head of an existing drilling machine, which is lifted on a frame above the base 1, by installing a drill bit on the punching part 2, and driving the punching part 2 to slide down, the workpiece placed on the base 1 is punched.

[0027] A rotary air cylinder 101 is installed on the base 1, the rotary air cylinder 101 includes a turntable 109, the forward and reverse rotation of the turntable 109 is controlled by an air valve, preferably, the rotary air cylinder 101 is a double-station air cylinder, that is, the air valve is driven once, and the rotary air cylinder 101 drives the turntable 109 to rotate 180°; the lower end of the rotating shaft 103 of the rotary air cylinder 101 is fixed on the turntable 109, and the upper end is fixedly connected with a clamp 102, the clamp 102 is used for clamping a link plate.

[0028] The turntable 109 of the rotary air cylinder 101 drives the rotating shaft 103 to rotate, so that the holes on both sides of the link plate on the clamp 102 are sequentially aligned with the drill bit of the punching part 2.

[0029] As Figure 2 shown, the clamp 102 is provided with a cavity 105 matched with the profile of the link plate, and the side wall of the cavity 105 is uniformly distributed with a catch pin 106 in the form of an elastic column pin; the end of the catch pin 106 is provided with an arc transition surface 107, so as to facilitate the quick clamping and positioning of the link plate when inserted into the cavity 105 through elastic deformation.

[0030] The axis of the rotating shaft 103 is located at the midpoint of the connecting line of the pin shaft holes on both sides of the link plate, when the rotary air cylinder 101 drives the turntable 109 to rotate 180°, the other hole body of the link plate is automatically coaxially aligned with the punching part 2, without the need for secondary adjustment.

[0031] The clamp 102 is provided with a chip removal hole 108 for the drill bit of the punching part 2 to pass through when punching, the drill bit of the punching part 2 is coaxial with the hole body to be machined when machining, the drill bit passes through the chip removal hole 108 to complete drilling and discharge the chips. The chip removal hole 108 penetrates through the bottom of the clamp 102, so as to avoid the accumulation of chips affecting the machining precision.

[0032] As Figure 2As shown, the base 1 is provided with an ejection assembly 3 for ejecting the chain link plate from the clamp 102, the ejection assembly 3 comprising an ejection cylinder 301 and a top pin 302 symmetrically arranged on both sides of a jacking plate 304; the top pin 302 is coaxial with the chip removal hole 108, and the ejection cylinder 301 drives the top pin 302 to rise through the jacking plate 304 to eject the finished chain link plate from the clamp 102; the jacking plate 304 is provided with a notch 305 for avoiding the rotating shaft 103 and ensuring smooth ejection; the top pin 302 is provided with a through hole 303, and a chip removal pipe is connected to the through hole 303, so that the chips discharged from the chip removal hole 108 are discharged into the chip removal pipe through the through hole 303, and the chip removal pipe can be a hose connected to a suction mechanism such as a dust collector to improve the chip removal speed.

[0033] The base 1 is provided with a switch 104 matched with the punching part 2, which can be preferentially installed on the frame above the base 1 to facilitate contact with the punching part 2; specifically, the punching part 2 is provided with a top rod that slides synchronously downward, and when the punching part 2 slides downward for punching and slides to a specified depth, the top rod contacts the switch 104 to trigger it; the switch 104 is electrically connected with the rotary cylinder 101.

[0034] When the punching part 2 completes the processing of one hole body, the punching part 2 triggers the switch 104, and the rotary cylinder 101 drives the clamp 102 to rotate 180° to switch the station; the switch 104 is electrically connected with the ejection cylinder 301 through a counter, and the counter records the number of times the switch 104 is triggered, and when it is triggered twice (i.e., the double-hole processing is completed), the counter sends a signal to the ejection cylinder 301 to automatically eject the workpiece, completing the double-hole processing of the chain link plate.

[0035] The method for using the chain punching device as described above comprises the following steps:

[0036] S1: clamping: inserting the chain link plate into the cavity 105 of the clamp 102, and clamping the workpiece through the elastic deformation of the catch pin 106, so that the arc transition surface 107 on the catch pin 106 abuts against the edge of the chain link plate;

[0037] S2: first hole processing: the punching part 2 descends to complete the drilling of the first hole;

[0038] S3: station switching: the punching part 2 triggers the switch 104 after completing the drilling of the first hole, and the rotary cylinder 101 drives the clamp 102 to rotate 180°, so that the second hole axis is aligned with the punching part 2;

[0039] S4: second hole processing: the punching part 2 descends again to complete the drilling of the second hole;

[0040] S5: automatic unloading: after the second hole is drilled, the punching part 2 triggers the switch 104 for the second time, at this time, the counter counts twice, the rotating cylinder 101 rotates while the ejector cylinder 301 drives the ejector pin 302 to lift the workpiece, so that the chain link plate is separated from the catch pin 106, and the unloading is completed.

[0041] The above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A chain perforating device characterized by: Includes a base (1) and a perforated part (2) that is raised and lowered on the base (1); A rotary cylinder (101) is provided on the base (1), and a clamp (102) adapted to the chain link plate is provided on the rotary cylinder (101). The rotary cylinder (101) is provided with a rotating shaft (103) that is fixedly engaged with the clamp (102). After the chain link plate is engaged with the fixture (102), the rotating shaft (103) is located at the midpoint of the line connecting the holes on both sides of the chain link plate, and the punched part (2) is coaxial with the hole on either side. The fixture (102) achieves the switching of the two side holes with the coaxial center of the punching part (2) by rotating the shaft (103).

2. A chain perforating device according to claim 1, characterized in that: The base (1) is provided with a switch (104) that cooperates with the punching part (2), and the switch (104) is electrically connected to the rotary cylinder (101).

3. A chain perforating device according to claim 1, wherein: The clamp (102) includes a cavity (105) and a number of locking pins (106) elastically disposed on the side wall of the cavity (105). After the chain link plate is installed into the cavity (105), it is locked and positioned by the locking pins (106).

4. A chain perforating device according to claim 3, wherein: The locking pin (106) is an elastic pin, and the locking pin (106) is evenly spaced around the edge of the side wall of the cavity (105), and its end is provided with an arc-shaped transition surface (107).

5. A chain perforating device according to claim 2, wherein: The fixture (102) is provided with a chip removal hole (108) for the drill bit of the drilling section (2) to pass through when drilling.

6. A chain perforating device according to claim 5, wherein: The base (1) is provided with an ejection assembly (3) for ejecting the chain link plate from the clamp (102); The ejection assembly (3) includes an ejection cylinder (301) and an ejector pin (302), wherein the ejector pin (302) is coaxially arranged with the chip removal hole (108) on either side.

7. A chain perforating device according to claim 6, wherein: The top pin (302) is symmetrically arranged on both sides of the ejector cylinder (301), and is coaxially arranged with the chip discharge holes (108) on both sides. The top pin (302) is provided with a through hole (303).

8. A chain perforating device according to claim 7, wherein: The through hole (303) is connected to a chip removal pipe.

9. A chain perforating device according to claim 8, wherein: The switch (104) is electrically connected to the ejector cylinder (301) via a counter. After the switch (104) is triggered twice, the counter feeds back to the ejector cylinder (301) to trigger its lifting.

10. A chain perforating device according to claim 9, wherein: The rotary cylinder (101) includes a turntable (109), and the rotating shaft (103) is disposed on the turntable (109); The ejector cylinder (301) is located on one side of the turntable (109). The ejector end of the ejector cylinder (301) is provided with a lifting plate (304). The top pins (302) are symmetrically arranged on both sides of the lifting plate (304). The lifting plate (304) is provided with a slot (305) that cooperates with the rotating shaft (103).

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