Double-station punch driving assembly

Abstract

The utility model provides a double-station punch driving assembly, which relates to the technical field of flexible circuit board processing, and comprises a shell assembly, a motor, a crankshaft assembly, a first punching assembly and a second punching assembly, two cavities are arranged in the shell assembly, the two cavities are arranged at an interval, two sliding support rods are respectively arranged on the left side and the right side in each cavity, and the two sliding support rods are arranged in the shell assembly. The top of the first punching assembly is contained in one cavity and is in sliding connection with two sliding supporting rods in the cavity, and the top of the second punching assembly is contained in the other cavity and is in sliding connection with two sliding supporting rods in the cavity. The bottom end of the first punching assembly and the bottom end of the second punching assembly both penetrate through the bottom of the shell assembly and protrude out of the outside. The crankshaft assembly sequentially penetrates through the first punching assembly and the second punching assembly and is in transmission connection with the first punching assembly and the second punching assembly. According to the utility model, the stable movement of the punching assembly can be improved when crankshaft parts are used for transmission, and the punching precision is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible circuit board processing, in particular to a double-station punch drive component. Background Art

[0002] Flexible circuit board is a kind of printed circuit board with high reliability and excellent flexibility made of polyimide or polyester film as the base material. It is called soft board or FPC for short. It has the characteristics of high wiring density, light weight and thin thickness. FPC and other film materials need to be opened during use.

[0003] When installing and fixing a flexible circuit board, it is often necessary to open holes of various specifications. Holes of different specifications have different uses. Some are used to pass conductive wires, and some are used to avoid the protruding steps inside the shell. When punching a flexible circuit board, it is necessary to punch out holes of different specifications in sequence (different specifications have different hole diameters). During the production process, in order to improve production efficiency, one or more punching devices of different specifications are installed side by side to punch holes of different specifications at the same time. Each punching device has a motor or cylinder inside to drive the punching head to move, which also leads to an increase in the cost of the equipment. In order to facilitate side-by-side punching and reduce the number of motors used, crankshaft parts are needed to convert the output of a single motor into power and distribute it to at least two punching components for alternating punching. How to conveniently assemble crankshaft parts and punching components and ensure that the punching components can stably perform high-precision punching movements requires research and development by enterprises.

[0004] Therefore, it is necessary to propose a double-station punch drive assembly to improve the stable movement of the punching assembly when using crankshaft parts for transmission, so as to improve the accuracy of punching. Utility Model Content

[0005] In order to solve the above problems, the utility model proposes a double-station punch drive assembly to improve the stable movement of the punching assembly when using crankshaft parts for transmission, so as to improve the accuracy of punching.

[0006] The utility model is realized by the following technical solutions:

[0007] The utility model proposes a double-station punch drive assembly, including a shell assembly, a motor, a crankshaft assembly, a first punching assembly, and a second punching assembly, wherein the motor is fixedly connected to one end of the shell assembly, one end of the crankshaft assembly is coaxially fixedly connected to the rotating shaft of the motor, the other end of the crankshaft assembly extends to the other end of the shell assembly, the crankshaft assembly is rotatably connected to the shell assembly, two chambers are provided in the shell assembly, the two chambers are arranged at intervals, and two sliding support rods are respectively provided on the left and right sides of the chamber, the top of the first punching assembly is accommodated in one of the chambers and is slidably connected to the two sliding support rods therein, the top of the second punching assembly is accommodated in the other chamber and is slidably connected to the two sliding support rods therein, the bottom ends of the first punching assembly and the second punching assembly both pass through the bottom of the shell assembly and protrude from the outside, the crankshaft assembly sequentially passes through the first punching assembly and the second punching assembly and forms a transmission connection with the first punching assembly and the second punching assembly respectively.

[0008] Furthermore, the shell assembly includes a first fixed shell, a partition plate, a second fixed shell, and a connecting frame. The first fixed shell, the partition plate, and the second fixed shell are arranged end to end in sequence and fixedly connected through the connecting frame. The bottom ends of the first punching assembly and the second punching assembly both pass through the connecting frame. The motor is fixedly connected to one end of the first fixed shell, and the other end of the first fixed shell is provided with a chamber, and one end of the second fixed shell is provided with another chamber. One end of the crankshaft assembly is rotatably connected to the other end of the second fixed shell, and the partition plate is located between the two chambers.

[0009] Furthermore, a avoidance groove is provided in the center of the partition plate, and the crankshaft assembly passes through the avoidance groove.

[0010] Furthermore, a first bearing is disposed in the first fixed shell, and the crankshaft assembly passes through the first bearing and is fixedly connected to an inner ring of the first bearing.

[0011] Furthermore, a second bearing is provided at one end of the second fixed shell, and one end of the crankshaft assembly is fixedly connected to an inner ring of the second bearing.

[0012] Furthermore, the connecting frame is provided with a guide boss, the guide boss is in communication with the chamber, and the bottom end of the first punching component and the bottom end of the second punching component both pass through the guide boss.

[0013] Furthermore, the lead-out boss is provided with two groups of through grooves, the two groups of through grooves are respectively connected to the two chambers, and the bottom end of the first punching component and the bottom end of the second punching component respectively pass through the two groups of through grooves.

[0014] Furthermore, the first punching assembly includes a follower block and a punching head, the follower block is accommodated in the chamber, the left and right ends of the follower block are respectively slidably connected to the two sliding support rods, the crankshaft assembly passes through the middle of the follower block and forms a transmission connection with the follower block, an extension rod is provided at the bottom of the follower block, the extension rod passes through the shell assembly and extends to the outside, and the punching head is fixedly connected to one end of the extension rod; the second punching assembly has the same structure as the first punching assembly.

[0015] Furthermore, the crankshaft assembly is provided with a first transmission part and a second transmission part, the first transmission part is located on one side of the axis of the crankshaft assembly, the second transmission part is located on the other side of the axis of the crankshaft assembly, the line connecting the first transmission part and the axis of the crankshaft assembly is a, the line connecting the second transmission part and the axis of the crankshaft assembly is b, the angle between a and b is 180°, the first transmission part is accommodated in the follower block of the first punching assembly and forms a transmission connection, and the second transmission part is accommodated in the follower block of the second punching assembly and forms a transmission connection.

[0016] Furthermore, the first transmission part includes a support shaft and two third bearings. The support shaft passes through the two third bearings in sequence and is fixedly connected to the inner rings of the two third bearings. The two third bearings are arranged in sequence in the middle part of the support shaft. The second transmission part has the same structure as the first transmission part.

[0017] Beneficial effects of the utility model:

[0018] The utility model adopts a motor to drive the crankshaft assembly to rotate at preset positive and negative angles, thereby simultaneously driving the first punching assembly and the second punching assembly to perform alternating punching. In order to ensure that the crankshaft assembly can rotate stably, it is necessary to set the crankshaft assembly and the shell assembly to form a rotational connection to provide a rotating support structure. Since the crankshaft assembly will generate a lateral thrust when driving the first punching assembly and the second punching assembly to move, in order to ensure that the lateral thrust will not affect the first punching assembly and the second punching assembly to produce a slight left and right shaking during punching, the first punching assembly and the second punching assembly need to be supported by two sliding support rods in the two chambers respectively for sliding support, so that the first punching assembly and the second punching assembly can both slide up and down stably, thereby improving the punching accuracy of the first punching assembly and the second punching assembly; in summary, the double-station punch drive assembly can improve the stable movement of the punching assembly when using crankshaft parts for transmission, and effectively improves the accuracy of punching. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an exploded view of the double-station punch drive assembly of the utility model;

[0020] Figure 2 It is an overall schematic diagram of the double-station punch drive assembly of the utility model;

[0021] Figure 3 It is an exploded view of the housing assembly of the double-station punch drive assembly of the utility model;

[0022] Figure 4 It is a schematic diagram of the crankshaft assembly of the double-station punch drive assembly of the utility model;

[0023] Figure 5 It is a schematic diagram of the first punching assembly of the double-station punch drive assembly of the utility model.

[0024] The reference numerals are as follows:

[0025] Shell assembly 1, chamber 11, sliding support rod 12, first fixed shell 13, first bearing 131, partition plate 14, avoidance groove 141, second fixed shell 15, second bearing 151, connecting frame 16, lead-out boss 161, through groove 1611;

[0026] Motor 2;

[0027] Crankshaft assembly 3, first transmission part 31, support shaft 311, third bearing 312, second transmission part 32;

[0028] The first punching assembly 4, the follower block 41, the extending rod 411, the punching head 42;

[0029] Second punching assembly 5. DETAILED DESCRIPTION

[0030] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0031] Please refer to Figure 1-Figure 5The utility model proposes a double-station punch drive assembly, including a housing assembly 1, a motor 2, a crankshaft assembly 3, a first punching assembly 4, and a second punching assembly 5. The motor 2 is a large torque stepping motor or a DC motor. The motor 2 is fixedly connected to one end of the housing assembly 1, one end of the crankshaft assembly 3 is coaxially fixedly connected to the rotating shaft of the motor 2, and the other end of the crankshaft assembly 3 extends to the other end of the housing assembly 1. The crankshaft assembly 3 is rotatably connected to the housing assembly 1. Two chambers 11 are arranged in the housing assembly 1. The left and right chambers 11 are arranged at intervals. Two sliding support rods 12 are respectively provided on both sides. The top of the first punching component 4 is accommodated in a chamber 11 and is slidably connected to the two sliding support rods 12 therein. The top of the second punching component 5 is accommodated in another chamber 11 and is slidably connected to the two sliding support rods 12 therein. The bottom ends of the first punching component 4 and the second punching component 5 both pass through the bottom of the shell component 1 and protrude to the outside. The crankshaft assembly 3 passes through the first punching component 4 and the second punching component 5 in turn and forms a transmission connection with the first punching component 4 and the second punching component 5 respectively.

[0032] In the present embodiment, the double-station punch drive assembly is driven to move by an external mechanical arm mechanism. When the first punching assembly 4 and the second punching assembly 5 are punching, the motor 2 is used to drive the crankshaft assembly 3 to rotate at a preset positive and negative angle, thereby simultaneously driving the first punching assembly 4 and the second punching assembly 5 to perform alternating punching. The punching head size in the first punching assembly 4 may be inconsistent with the punching head size of the second punching assembly 5, so as to facilitate punching holes of different specifications on the same travel route. In order to ensure that the crankshaft assembly 3 can rotate stably, it is necessary to set the crankshaft assembly 3 and the shell assembly 1 to also form a The first punching assembly 4 and the second punching assembly 5 are rotatably connected to provide a rotating support structure. Since the crankshaft assembly 3 generates a lateral thrust when driving the first punching assembly 4 and the second punching assembly 5 to move, in order to ensure that the lateral thrust does not affect the first punching assembly 4 and the second punching assembly 5 to produce a slight left and right shaking during punching, the first punching assembly 4 and the second punching assembly 5 need to be supported by two sliding support rods 12 in the two chambers 11 for sliding, so that the first punching assembly 4 and the second punching assembly 5 can slide up and down stably, thereby improving the punching accuracy of the first punching assembly 4 and the second punching assembly 5;

[0033] In summary, the double-station punch drive assembly can improve the stable movement of the punching assembly when using crankshaft parts for transmission, and effectively improve the accuracy of punching.

[0034] In this embodiment, the housing assembly 1 includes a first fixed shell 13, a partition plate 14, a second fixed shell 15, and a connecting frame 16. The first fixed shell 13, the partition plate 14, the second fixed shell 15, and the connecting frame 16 are all made of metal materials. The first fixed shell 13, the partition plate 14, and the second fixed shell 15 are arranged end to end in sequence and fixedly connected through the connecting frame 16. The bottom ends of the first punching assembly 4 and the second punching assembly 5 both pass through the connecting frame 16. The motor 2 is fixedly connected to one end of the first fixed shell 13, and a chamber 11 is provided at the other end of the first fixed shell 13. Another chamber 11 is provided at one end of the second fixed shell 15. One end of the crankshaft assembly 3 is rotatably connected to the other end of the second fixed shell 15, and the partition plate 14 is located between the two chambers 11. During assembly, the motor 2 is first installed on one end of the first fixed shell 13, and then one end of the crankshaft assembly 3 is installed on the rotating shaft of the motor 2. Then the first punching assembly 4 is placed in the chamber 11 of the first fixed shell 13. At this time, the crankshaft assembly 3 will pass through the first punching assembly 4, and then the two sliding support rods 12 will be inserted into the chamber 11 from the top of the first fixed shell 13 and penetrate the first punching assembly 4, so that the first punching assembly 4 is slidably connected with the two sliding support rods 12, and then the partition plate 14 will be attached to the other end of the first fixed shell 13, at this time, the partition plate 14 will cover a part of the first punching assembly 4, and then the second punching assembly 5 will be placed in the chamber 11 of the second fixed shell 15, and the two sliding support rods 12 will be inserted into the chamber 11 from the top of the second fixed shell 15 and penetrate the second punching assembly 5, so that the second punching assembly 5 is slidably connected with the two sliding support rods 12, and then the second fixed shell 15 with one end of the chamber 11 is attached to the partition plate 14 for placement, and then the first fixed shell 13, the partition plate 14, and the second fixed shell 15 are fixed together by screwing the connecting frame 16, and the assembly of the utility model is completed at this time, and such an assembly method is conducive to conveniently assembling crankshaft parts and punching assemblies.

[0035] In this embodiment, a avoidance groove 141 is provided in the center of the partition plate 14, and the crankshaft assembly 3 passes through the avoidance groove 141. The avoidance groove 141 is provided to provide a space for the crankshaft assembly 3 to pass through, so as to avoid obstructing the normal rotation of the crankshaft assembly 3.

[0036] In this embodiment, a first bearing 131 is provided in the first fixed shell 13, and the crankshaft assembly 3 passes through the first bearing 131 and is fixedly connected to the inner ring of the first bearing 131. In order to improve the rotation stability of the crankshaft assembly 3, the first bearing 131 is provided to support the rotation of the front half of the crankshaft assembly 3.

[0037] In this embodiment, a second bearing 151 is provided at one end of the second fixed shell 15, and one end of the crankshaft assembly 3 is fixedly connected to the inner ring of the second bearing 151. In order to improve the rotation stability of the crankshaft assembly 3, the second bearing 151 is provided to support the rotation of the rear half of the crankshaft assembly 3.

[0038] In this embodiment, the connecting frame 16 is provided with an export boss 161, which is connected to the chamber 11, and the bottom ends of the first punching component 4 and the second punching component 5 pass through the export boss 161. The export boss 161 guides the bottom ends of the first punching component 4 and the second punching component 5 to extend, and also provides a stable sliding support structure; the export boss 161 is provided with two groups of through grooves 1611, and the two groups of through grooves 1611 are respectively connected to the two chambers 11, and the bottom ends of the first punching component 4 and the second punching component 5 pass through the two groups of through grooves 1611, respectively, and the through grooves 1611 are used to provide a guiding channel extending outward for the bottom ends of the first punching component 4 and the second punching component 5, and also facilitate the assembly of the first punching component 4 and the second punching component 5.

[0039] In this embodiment, the first punching assembly 4 includes a follower block 41 and a punching head 42. The follower block 41 is accommodated in the chamber 11. The left and right ends of the follower block 41 are respectively slidably connected to the two sliding support rods 12. The crankshaft assembly 3 passes through the middle of the follower block 41 and forms a transmission connection with the follower block 41. The bottom of the follower block 41 is provided with an extension rod 411, which passes through the shell assembly 1 and extends to the outside. The punching head 42 is fixedly connected to one end of the extension rod 411; the second punching assembly 5 has the same structure as the first punching assembly 4; when the crankshaft assembly 3 rotates at a preset positive and negative angle, the crankshaft assembly 3 will drive the follower block 41 to slide up and down, and the up and down sliding of the follower block 41 will drive the punching head 42 to move up and down through the extension rod 411, thereby punching the material.

[0040] In this embodiment, the crankshaft assembly 3 is provided with a first transmission part 31 and a second transmission part 32. The first transmission part 31 is located on one side of the axis of the crankshaft assembly 3, and the second transmission part 32 is located on the other side of the axis of the crankshaft assembly 3. The line connecting the first transmission part 31 and the axis of the crankshaft assembly 3 is a, and the line connecting the second transmission part 32 and the axis of the crankshaft assembly 3 is b. The angle between a and b is 180°, that is, the first transmission part 31 is accommodated in the follower block 41 of the first punching assembly 4 and forms a transmission connection, and the second transmission part 32 is accommodated in the follower block 41 of the second punching assembly 5 and forms a transmission connection; a U-shaped groove is provided in the center of the follower block 41, and the first transmission part 31 will be accommodated in the U-shaped groove on the follower block 41 of the first punching assembly 4. The second transmission part 32 will be accommodated in the U-shaped groove on the follower block 41 of the second punching assembly 5. Since the first transmission part 31 and the second transmission part 32 are staggered, when the crankshaft assembly 3 rotates at the preset positive and negative angles, if the first punching assembly 4 punches downward, the second punching assembly 5 will slide upward, and the movement directions are opposite, and vice versa. When the crankshaft assembly 3 rotates to the middle angle of the preset positive and negative angles, the first punching assembly 4 will be flush with the second punching assembly 5, that is, when punching preset holes of different specifications, the first punching assembly 4 or the second punching assembly 5 can be selected for punching by setting the rotation angle of the motor 2, or the first punching assembly 4 and the second punching assembly 5 can be punched alternately together.

[0041] In this embodiment, the first transmission part 31 includes a support shaft 311 and two third bearings 312. The support shaft 311 passes through the two third bearings 312 in sequence and is fixedly connected to the inner rings of the two third bearings 312. The two third bearings 312 are arranged in sequence in the middle part of the support shaft 311. The second transmission part 32 has the same structure as the first transmission part 31. In order to reduce the friction between the first transmission part 31 or the second transmission part 32 and the follower block 41 during transmission, two third bearings 312 are set as the force-bearing structure during transmission, and the original sliding friction is converted into rolling friction, so as to reduce friction and increase service life.

[0042] Of course, the present utility model may have many other implementations. Based on the present implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present utility model.

Claims

1. A double-station punch drive assembly, characterized in that: The invention comprises a shell assembly, a motor, a crankshaft assembly, a first punching assembly and a second punching assembly, wherein the motor is fixedly connected to one end of the shell assembly, one end of the crankshaft assembly is coaxially fixedly connected to the rotating shaft of the motor, the other end of the crankshaft assembly extends to the other end of the shell assembly, the crankshaft assembly is rotatably connected to the shell assembly, two chambers are arranged in the shell assembly, the two chambers are spaced apart, two sliding support rods are respectively arranged on the left and right sides of the chamber, the top of the first punching assembly is accommodated in one of the chambers and is slidably connected to the two sliding support rods therein, the top of the second punching assembly is accommodated in the other chamber and is slidably connected to the two sliding support rods therein, the bottom ends of the first punching assembly and the second punching assembly both pass through the bottom of the shell assembly and protrude from the outside, the crankshaft assembly sequentially passes through the first punching assembly and the second punching assembly and forms a transmission connection with the first punching assembly and the second punching assembly respectively.

2. The double-station punch drive assembly according to claim 1, characterized in that: The shell assembly includes a first fixed shell, a partition plate, a second fixed shell, and a connecting frame. The first fixed shell, the partition plate, and the second fixed shell are arranged end to end in sequence and fixedly connected through the connecting frame. The bottom ends of the first punching assembly and the second punching assembly both pass through the connecting frame. The motor is fixedly connected to one end of the first fixed shell, and the other end of the first fixed shell is provided with a chamber, and one end of the second fixed shell is provided with another chamber. One end of the crankshaft assembly is rotatably connected to the other end of the second fixed shell, and the partition plate is located between the two chambers.

3. The double-station punch drive assembly according to claim 2, characterized in that: An avoidance groove is provided in the center of the partition plate, and the crankshaft assembly passes through the avoidance groove.

4. The double-station punch drive assembly according to claim 2, characterized in that: A first bearing is disposed in the first fixed housing, and the crankshaft assembly passes through the first bearing and is fixedly connected to an inner ring of the first bearing.

5. The double-station punch drive assembly according to claim 2, characterized in that: A second bearing is disposed at one end of the second fixed shell, and one end of the crankshaft assembly is fixedly connected to an inner ring of the second bearing.

6. The double-station punch drive assembly according to claim 2, characterized in that: The connecting frame is provided with a guide boss, the guide boss is in communication with the chamber, and the bottom end of the first punching component and the bottom end of the second punching component both pass through the guide boss.

7. The double-station punch drive assembly according to claim 6, characterized in that: The lead-out boss is provided with two groups of through grooves, which are respectively communicated with the two chambers, and the bottom end of the first punching component and the bottom end of the second punching component respectively pass through the two groups of through grooves.

8. The double-station punch drive assembly according to claim 1, characterized in that: The first punching assembly includes a follower block and a punching head. The follower block is accommodated in the chamber. The left and right ends of the follower block are respectively slidably connected to the two sliding support rods. The crankshaft assembly passes through the middle of the follower block and forms a transmission connection with the follower block. An extension rod is provided at the bottom of the follower block. The extension rod passes through the shell assembly and extends to the outside. The punching head is fixedly connected to one end of the extension rod. The second punching assembly has the same structure as the first punching assembly.

9. The double-station punch drive assembly according to claim 8, characterized in that: The crankshaft assembly is provided with a first transmission part and a second transmission part. The first transmission part is located on one side of the axis of the crankshaft assembly, and the second transmission part is located on the other side of the axis of the crankshaft assembly. The line connecting the first transmission part and the axis of the crankshaft assembly is a, and the line connecting the second transmission part and the axis of the crankshaft assembly is b. The angle between a and b is 180°. The first transmission part is accommodated in the follower block of the first punching assembly and forms a transmission connection. The second transmission part is accommodated in the follower block of the second punching assembly and forms a transmission connection.

10. The double-station punch drive assembly according to claim 9, characterized in that: The first transmission part includes a support shaft and two third bearings. The support shaft passes through the two third bearings in sequence and is fixedly connected to the inner rings of the two third bearings. The two third bearings are arranged in sequence in the middle part of the support shaft. The second transmission part has the same structure as the first transmission part.

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