Turnover unit for positioning turnover workpiece

Abstract

An overturning unit for positioning an overturning workpiece comprises a shell, a rotating shaft, a piston assembly, a clamping arm, an upper cover, a lower cover, a guide rail cushion block, a reinforcing steel sheet and a cylinder barrel, the rotating shaft is connected with the shell, the piston assembly is connected with the rotating shaft, the rotating shaft is connected with the clamping arm, the reinforcing steel sheet is connected with the upper portion of the shell, the guide rail cushion block is connected with the interior of the shell, and the shell is connected with the upper cover. The upper cover is connected with the cylinder barrel which is connected with the lower cover. Compared with the prior art, the air cylinder has a pneumatic buffering effect when the air cylinder is in the state of opening and clamping an adjacent terminal, so that the air cylinder can move more gently when the air cylinder is in the state of opening and clamping the terminal in the load state, mechanical collision in the cylinder body is reduced, and the service life of the overturning unit is prolonged.

Description

Technical Field

[0001] The utility model relates to a limit fixing and flipping component in the field of body-in-white welding, in particular to a flipping unit for flipping a workpiece for positioning. Background Art

[0002] At present, on the body-in-white welding automated production line, ordinary flipping units, when doing flipping work, rely on the internal impact limit of the piston at the opening and clamping terminal positions, which will cause certain wear on the cylinder itself and reduce the life of the flipping unit. When the terminal stops, it will produce a certain degree of jitter due to the impact, resulting in a long flipping time, affecting the production efficiency of the production line.

[0003] To solve the above problems, we made a series of improvements. Utility Model Content

[0004] The purpose of the utility model is to provide a turning unit for turning a workpiece for positioning, so as to overcome the above-mentioned shortcomings and deficiencies in the prior art.

[0005] A flip unit for flipping a workpiece for positioning, comprising: a housing, a rotating shaft, a piston assembly, a clamping arm, an upper cover, a lower cover, a guide rail pad, a reinforcing steel sheet and a cylinder, wherein the rotating shaft is connected to the housing, the piston assembly is connected to the rotating shaft, the rotating shaft is connected to the clamping arm, the reinforcing steel sheet is connected to the upper part of the housing, the guide rail pad is connected to the inside of the housing, the housing is connected to the upper cover, the upper cover is connected to the cylinder, and the cylinder is connected to the lower cover;

[0006] Among them, the upper cover has a left air hole and a lower air hole inside the upper cover, and the lower cover has a left air hole and an upper air hole inside the lower cover. The upper cover left air hole is located on the inner side of the upper cover, and the air hole path of the upper cover left air hole is punched to the left through a hollow cylinder to connect to the outer side of the upper cover, the upper cover lower air hole is located on the lower end plane of the upper cover, and the air hole path of the upper cover lower air hole is punched upward from the plane of the lower end of the upper cover to connect to the outer side of the upper cover, the lower cover left air hole is located on the inner side of the lower cover, and the air hole path of the lower cover left air hole is punched to the left through an inner hollow cylinder to connect to the outer side of the lower cover, the lower cover upper air hole is located on the upper end plane of the lower cover, and the air hole path of the lower cover upper air hole is punched downward from the plane of the upper end of the lower cover to connect to the outer side of the lower cover.

[0007] Furthermore, the piston assembly includes: a piston, a piston rod, a connecting block, a long pin, a short pin, a fork, a buffer sleeve, and a buffer nut. The piston is fixed to the piston rod through the buffer sleeve and the buffer nut. The piston rod is connected to the fork, and the fork is connected to the connecting block through the long pin. The other end of the connecting block is connected to the rotating shaft through the short pin.

[0008] Beneficial effects of the utility model:

[0009] Compared with the traditional technology, the utility model realizes a pneumatic buffering effect when the cylinder is opened and clamped near the terminal state, so that the cylinder can move more smoothly when opened and clamped at the terminal position under load, and reduces mechanical collision inside the cylinder body, thereby extending the service life of the flip unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Reference numerals

[0012] The housing 100 , the rotating shaft 200 , the piston assembly 300 , the piston 310 , the piston rod 320 , the connecting block 330 , the long pin 340 , the short pin 350 , the fork 360 , the buffer sleeve 370 and the buffer nut 380 .

[0013] The clamping arm 400 , the upper cover 500 , the upper cover left air hole 510 , the upper cover lower air hole 520 , the lower cover 600 , the lower cover left air hole 610 and the lower cover upper air hole 620 .

[0014] Guide rail pad 700, reinforcing steel sheet 800 and cylinder barrel 900. DETAILED DESCRIPTION

[0015] The following is a further description of the present invention in conjunction with specific embodiments. It should be understood that the following embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0016] Example 1

[0017] Figure 1 It is a schematic diagram of the structure of the utility model.

[0018] like Figure 1 As shown, a flip unit for flipping a workpiece for positioning includes: a housing 100, a rotating shaft 200, a piston assembly 300, a clamping arm 400, an upper cover 500, a lower cover 600, a guide rail pad 700, a reinforcing steel sheet 800 and a cylinder 900, wherein the rotating shaft 200 is connected to the housing 100, the piston assembly 300 is connected to the rotating shaft 200, the rotating shaft 200 is connected to the clamping arm 400, the reinforcing steel sheet 800 is connected to the upper part of the housing 100, the guide rail pad 700 is connected to the inside of the housing 100, the housing 100 is connected to the upper cover 500, the upper cover 500 is connected to the cylinder 900, and the cylinder 900 is connected to the lower cover 600;

[0019] Among them, the upper cover 500 has an upper cover left air hole 510 and an upper cover lower air hole 520 inside, and the lower cover 600 has a lower cover left air hole 610 and a lower cover upper air hole 620 inside. The upper cover left air hole 510 is located on the inner side of the upper cover 500, and the air hole path of the upper cover left air hole 510 is punched to the left through a hollow cylinder to connect to the outer side of the upper cover. The upper cover lower air hole 520 is located on the lower end plane of the upper cover 500, and the air hole path of the upper cover lower air hole 520 is punched upward from the plane of the lower end of the upper cover 500 to connect to the outer side of the upper cover. The lower cover left air hole 610 is located on the inner side of the lower cover 600, and the air hole path of the lower cover left air hole 610 is punched to the left through an inner hollow cylinder to connect to the outer side of the lower cover 600. The lower cover upper air hole 620 is located on the upper end plane of the lower cover 600, and the air hole path of the lower cover upper air hole 620 is punched downward from the plane of the upper end of the lower cover 600 to connect to the outer side of the lower cover 600.

[0020] The piston assembly 300 includes: a piston 310, a piston rod 320, a connecting block 330, a long pin 340, a short pin 350, a fork 360, a buffer sleeve 370, and a buffer nut 380. The piston 310 is fixed to the piston rod 320 through the buffer sleeve 370 and the buffer nut 380. The piston rod 320 is connected to the fork 360, and the fork 360 is connected to the connecting block 330 through the long pin 340. The other end of the connecting block 330 is connected to the rotating shaft 200 through the short pin 350.

[0021] The principle of the utility model is that gas is introduced into the lower cover 600 to push the piston 310, and the piston 310 drives the piston rod 320 to move upward from the lower end of the cylinder 900, and the upper end of the piston rod 320 is connected to the fork 360, and the fork 360 is connected to the connecting block 330 through the long pin 340, and the connecting block 330 is connected to the rotating shaft 200 through the short pin 350, and the other end of the rotating shaft 200 is fixed to the shell 100. When the piston rod 320 moves upward, the connection between the fork 360 and the connecting block 330 will be limited by the guide rail pad 700, and make relative linear motion upward, and the connecting block 330 is movably connected to the rotating shaft 200 through the short pin 350. When the piston rod 320 moves upward, the end of the rotating shaft 200 connected to the shell 100 rotates, and the rotating shaft 200 is connected to the clamp arm 400, so that the clamp arm 400 is flipped, and the clamp arm 400 can be connected to different forms of tooling to make the tooling flip. In order to achieve the terminal opening by the flip unit clamping, the position limitation does not completely rely on mechanical impact, so that the flip unit has a buffering effect when the terminal is running, making the flip unit more stable. The exhaust method of the upper cover 500 and the lower cover 600 is improved in mechanical structure. When the gas is introduced into the lower cover 600, the buffer sleeve 370 moves upward with the piston rod 320. At this time, when the buffer sleeve 370 completely blocks the inner diameter of the upper cover 500, the exhaust hole of the left air hole 510 of the upper cover 500 will be sealed during the clamping movement, and the gas will be discharged from one of the air holes 520 of the upper cover. At this time, the exhaust gas will be reduced. At the same time, when the flip unit is close to the clamping terminal, the running speed will also slow down. The upper cover is fed with gas, and the buffer nut 380 moves downward along with the piston rod 320. At this time, the gas is discharged simultaneously from the two exhaust holes, the left air hole 610 and the upper air hole 620 of the lower cover. When the buffer nut 380 completely blocks the inner diameter of the lower cover 600, the exhaust hole 610 of the lower cover 600 will be sealed during the opening movement, and the gas will be discharged from the upper air hole 620 of the lower cover. At this time, the exhaust gas will be reduced, and at the same time, the operation speed of the flip unit will also slow down when it is close to the opening terminal. This makes the flip unit close to the opening terminal position relatively slowly, forming a buffering effect and more stable operation.

[0022] Compared with the traditional technology, the utility model realizes a pneumatic buffering effect when the cylinder is opened and clamped near the terminal state, so that the cylinder can move more smoothly when opened and clamped at the terminal position under load, and reduces mechanical collision inside the cylinder body, thereby extending the service life of the flip unit.

[0023] The specific implementation modes of the present invention are described above, but the present invention is not limited thereto. The present invention can also have various changes without departing from the purpose of the present invention.

Claims

1. A turning unit for turning a workpiece to position, characterized in that: include: A housing (100), a rotating shaft (200), a piston assembly (300), a clamping arm (400), an upper cover (500), a lower cover (600), a guide rail pad (700), a reinforcing steel sheet (800) and a cylinder barrel (900), wherein the rotating shaft (200) is connected to the housing (100), the piston assembly (300) is connected to the rotating shaft (200), the rotating shaft (200) is connected to the clamping arm (400), the reinforcing steel sheet (800) is connected to the upper part of the housing (100), the guide rail pad (700) is connected to the inside of the housing (100), the housing (100) is connected to the upper cover (500), the upper cover (500) is connected to the cylinder barrel (900), and the cylinder barrel (900) is connected to the lower cover (600); The upper cover (500) has an upper cover left air hole (510) and an upper cover lower air hole (520) inside, and the lower cover (600) has a lower cover left air hole (610) and a lower cover upper air hole (620) inside. The upper cover left air hole (510) is located on the inner side of the upper cover (500), and the air hole path of the upper cover left air hole (510) is connected to the outer side of the upper cover through a hollow cylinder punched to the left, and the upper cover lower air hole (520) is located on the lower end plane of the upper cover (500). )'s air hole path is punched upward from the plane at the lower end of the upper cover (500) to connect to the outer side of the upper cover, the left air hole (610) of the lower cover is located on the inner side of the lower cover (600), the air hole path of the left air hole (610) of the lower cover is punched to the left through the inner hollow cylinder to connect to the outer side of the lower cover (600), the upper air hole (620) of the lower cover is located on the upper plane of the lower cover (600), the air hole path of the upper air hole (620) of the lower cover is punched downward from the plane at the upper end of the lower cover (600) to connect to the outer side of the lower cover (600).

2. A turning unit for turning a workpiece to position according to claim 1, characterized in that: The piston assembly (300) comprises: a piston (310), a piston rod (320), a connecting block (330), a long pin (340), a short pin (350), a fork (360), a buffer sleeve (370), and a buffer nut (380); the piston (310) is fixed to the piston rod (320) via the buffer sleeve (370) and the buffer nut (380); the piston rod (320) is connected to the fork (360); the fork (360) is connected to the connecting block (330) via the long pin (340); and the other end of the connecting block (330) is connected to the rotating shaft (200) via the short pin (350).

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