CN219598601U - Center separating device - Google Patents

Abstract

The application discloses a centering device, which comprises a base and a centering mechanism; the base carries a first workpiece with a first split middle hole; the centering mechanism comprises a centering component and a power component; the middle-dividing assembly comprises a sliding part, two first middle-dividing strips and a pushing part, wherein the sliding part is close to a first workpiece under the driving of the power assembly, the two first middle-dividing strips are arranged at intervals and are all rotationally connected with the sliding part, one ends of the two first middle-dividing strips are respectively provided with a first inclined surface, the pushing part is arranged in the sliding part in a sliding mode so as to be opposite to the sliding part under the driving of the power assembly, one ends of the two first middle-dividing strips are close to the sliding part, the pushing part is provided with two second inclined surfaces, and the other ends of the two first middle-dividing strips are inserted into first middle-dividing holes under the driving of the sliding part and are mutually far away from each other under the driving of the pushing part so as to be respectively abutted to the hole walls of the first middle-dividing holes, and the middle division of the first workpiece is realized. The centering device reduces the labor intensity of operators, improves the positioning precision in centering and improves the assembly yield.

Description

Center separating device

Technical Field

The application relates to the technical field of assembly, in particular to a centering device.

Background

In general, it is necessary to center the work piece having a hole-like structure for assembly. At present, a manual operation mode is generally adopted to divide and position a workpiece. However, the manual operation mode often has the condition of inaccurate positioning in the middle, which results in low assembly yield.

Disclosure of Invention

In view of the foregoing, it is necessary to provide a centering device to improve the positioning accuracy of centering and to improve the assembly yield.

The embodiment of the utility model provides a centering device, which comprises a base and a centering mechanism; the base is used for bearing a first workpiece with a first split middle hole; the centering mechanism comprises a centering component and a power component; the device comprises a base, a first middle dividing strip, a second middle dividing strip, a pushing piece, a first middle dividing strip, a second middle dividing strip and a second middle dividing strip, wherein the middle dividing strip is arranged on the base in a sliding mode and is used for being arranged opposite to the first middle dividing hole, the sliding piece is arranged on the base in a sliding mode and is close to the first workpiece under the driving of the power component, the first middle dividing strip is arranged at intervals and is connected with the sliding piece in a rotating mode, one end of the first middle dividing strip is arranged in the sliding piece and is provided with a first inclined surface, the first inclined surface of the first middle dividing strip is arranged in a deviating mode, the other end of the first middle dividing strip is arranged outside the sliding piece, the pushing piece is arranged in the sliding piece in a sliding mode so as to be close to one end of the first middle dividing strip under the driving of the power component, the second inclined surface of the pushing piece is arranged in a matching mode with the two second inclined surfaces, the second inclined surface of the pushing piece faces the first middle dividing strip is arranged in a mode, the other end of the first middle dividing strip is inserted into the first middle dividing hole and is in the first middle dividing hole of the first middle dividing hole, and the first middle dividing hole is far away from the first middle dividing hole under the driving of the first middle dividing hole, and the first middle dividing hole is achieved.

When the centering device is used, a first workpiece with a first centering hole is placed on the base, the first centering hole and the centering component are arranged oppositely, the power component drives the sliding piece to move close to the first workpiece, so that two first centering strips are inserted into the first centering hole, the power component drives the pushing piece to move close to the two first centering strips, one ends of the two first centering strips are close to each other through the cooperation of the two second inclined planes and the two first inclined planes, and the other ends of the two first centering strips are far away from each other through rotation so as to be respectively abutted against the hole wall of the first centering hole, so that centering positioning of the first centering hole of the first workpiece is realized. According to the centering device provided by the application, an operator drives the sliding part and the pushing part to move through the power assembly, so that centering positioning of the first centering hole of the first workpiece can be realized, the operation steps of the operator can be simplified, and the labor intensity of the operator is reduced; because the centering mechanism is of a mechanical structure, the centering mechanism can form a unified centering positioning standard, and the centering positioning precision is improved, so that the assembly yield is improved.

In some embodiments, the power assembly includes a first eccentric member, the first eccentric member includes a first rotating portion and a first abutting portion eccentrically connected with the first rotating portion, the first rotating portion is rotatably provided on the base, and the first abutting portion is rotatably connected with the sliding member, so that when the first eccentric member eccentrically rotates, the sliding member is driven to be far away from or close to the first workpiece.

In some embodiments, the first abutting portion is located at a side of the pushing member facing the first middle dividing strip, the middle dividing assembly further includes a first elastic member, the first elastic member is disposed in the sliding member, one end of the first elastic member is connected with the sliding member, the other end of the first elastic member abuts against the pushing member to enable the pushing member to abut against the first abutting portion, and the extending direction of the first elastic member is the same as the moving direction of the pushing member; and the first abutting part is provided with an avoidance groove, so that when the first eccentric part rotates, the avoidance groove faces the pushing part, and the first elastic part elastically drives the pushing part to move close to the two first middle strips.

In some embodiments, the middle-dividing assembly further comprises a second middle-dividing strip, a second elastic piece and a resisting rod, wherein the second middle-dividing strip is arranged between the two first middle-dividing strips, one end of the second middle-dividing strip is provided with a positioning rod, the second middle-dividing strip is slidably arranged in a first kidney-shaped hole of the sliding piece through the positioning rod, the other end of the second middle-dividing strip is arranged outside the sliding piece, the resisting rod is arranged in the sliding piece and is connected with the sliding piece, and the second elastic piece is respectively abutted against one ends of the resisting rod and the second middle-dividing strip; the other end of the second middle dividing strip is provided with a middle dividing part, so that when the sliding piece moves close to the first workpiece, the middle dividing part of the second middle dividing strip is elastically inserted into the first middle dividing hole, and the middle dividing of the first middle dividing hole of the first workpiece is realized.

In some embodiments, the centering mechanism further comprises a guide seat, the guide seat is arranged on the base, and the centering component is slidably arranged in the guide seat; the centering device further comprises a plurality of positioning pieces, the positioning pieces are arranged on the base and distributed along the outline of the first workpiece, and the positioning pieces are matched with the guide seats to position the first workpiece.

In some embodiments, the middle-dividing assembly further includes a third elastic member, where the third elastic member is disposed in the sliding member and located between the two first middle-dividing strips, and the third elastic member is used to keep one ends of the two first middle-dividing strips away from each other to reset.

In some embodiments, the splitting device further comprises: the pressure maintaining mechanism is arranged on the base in a sliding manner and positioned on two opposite sides of the first middle dividing hole with the middle dividing mechanism; the assembly component is movably arranged on the pressure maintaining mechanism and is used for bearing a second workpiece with a second middle hole, and the second middle hole is opposite to the first middle hole; the driving assembly is used for driving the pressure maintaining mechanism to move, and then driving the assembly to move towards the first middle dividing hole so that the second workpiece is inserted into the first middle dividing hole, and then the middle dividing mechanism can divide the first middle dividing hole of the first workpiece and the second middle dividing hole of the second workpiece at the same time.

In some embodiments, the pressure maintaining mechanism includes a base, a first supporting rod, a second supporting rod, a fourth elastic member and a fifth elastic member, the base is slidably disposed on the base, the assembly component is movably disposed on the base, the first supporting rod and the second supporting rod are disposed at intervals, the first supporting rod and the second supporting rod are movably connected with the base, one end of the first supporting rod and one end of the second supporting rod are disposed in the base, the other end of the first supporting rod and the other end of the second supporting rod are disposed outside the base, the fourth elastic member and the fifth elastic member are disposed in the base, one end of the fourth elastic member is connected with the base, the other end of the fourth elastic member is connected with one end of the first supporting rod, one end of the fifth elastic member is connected with the base, the other end of the fifth elastic member is connected with one end of the second supporting rod, the other end of the fourth elastic member and the other end of the second supporting rod are both arranged outside the fourth elastic member and the second supporting rod, the other end of the fourth elastic member and the second supporting rod are both arranged in the same direction as the second supporting rod, and the second elastic member is used for pressing the first supporting rod and the second supporting rod, and the second elastic member is used for pressing the workpiece in the same direction.

In some embodiments, the driving assembly includes a second eccentric member and a connecting rod, the connecting rod is slidably disposed on the base, the connecting rod is connected with the pressure maintaining mechanism, a bar hole is formed at one end of the connecting rod, the other end of the connecting rod is disposed opposite to the centering mechanism, the second eccentric member includes a second rotating portion and a second abutting portion eccentrically connected with the second rotating portion, the second rotating portion is rotationally disposed on the base, the second abutting portion is rotationally disposed in the bar hole, so that when the second eccentric member eccentrically rotates, the connecting rod is driven to slide close to the centering mechanism, and the pressure maintaining mechanism and the assembly are driven to be close to the first centering hole, so that a second workpiece is inserted into the first centering hole, and the second workpiece abuts against the centering mechanism to be far away from the first centering hole, so that the first centering bar is far away from the first centering hole.

In some embodiments, the assembly component comprises an assembly body, an assembly part and a sixth elastic piece, the assembly body is movably arranged on the pressure maintaining mechanism, the assembly part is slidably arranged on the assembly body, one end of the assembly part is used for being inserted into the second split hole so that the assembly component bears the second workpiece, and two ends of the sixth elastic piece respectively elastically support against the assembly body and the assembly part.

Drawings

Fig. 1 is a schematic perspective view of a centering device according to an embodiment of the present application.

Fig. 2 is an exploded view of the separating device shown in fig. 1.

Fig. 3 is an exploded view of the centering mechanism shown in fig. 2.

Fig. 4 is an exploded view of the subassembly and power assembly of fig. 3.

Fig. 5 is a perspective schematic view of the dwell mechanism shown in fig. 2.

Fig. 6 is an exploded view of the pressure maintaining mechanism shown in fig. 2.

Fig. 7 is a perspective schematic view of the mounting assembly shown in fig. 2.

Fig. 8 is an exploded view of the mounting assembly of fig. 2.

Fig. 9 is a schematic perspective view of a fitting assembly, a first workpiece and a second workpiece according to an embodiment of the present application.

Description of the main reference signs

Center separating device 100

Base 10

Strip groove 11

Embedded groove 12

Through hole 13

Accommodation groove 14

Sliding hole 15

Retractable stop lever 16

Centering mechanism 20

Centering assembly 21

Slider 211

Accommodating chamber 2111

First kidney-shaped hole 2112

First dividing strip 212

First inclined surface 2121

Step 2122

Pusher 213

Second inclined surface 2131

Bevel groove 2132

Mounting groove 2133

First elastic member 214

Second middle bar 215

Locating lever 2151

Part middle 2152

Second elastic member 216

Stop lever 217

Third elastic member 218

Power assembly 22

First eccentric 221

First rotating portion 2211

First abutting portion 2212

Avoidance groove 2213

First connection portion 2214

Base elastic piece 222

First handle 223

First pin 224

Guide holder 23

Guide groove 231

Adapting surface 232

Positioning piece 30

Stop 35

Pressure maintaining mechanism 40

Base 41

Holding tank 411

Abutment guide 412

First through hole 413

Second through hole 414

First abutting rod 42

Second abutting rod 43

Fourth elastic member 44

Fifth elastic member 45

Limit guide 46

Resisting part 461

Assembly component 50

Assembly 51

First fitting portion 511

Second fitting portion 512

Second kidney-shaped hole 513

Fitting 52

Mounting plate 521

Mounting bar 522

Sixth elastic member 53

Seventh elastic member 54

Drive assembly 60

Second eccentric 61

Second rotating part 611

Second contact portion 612

Second connecting portion 613

Connecting rod 62

Strip hole 621

Second handle 63

Second pin shaft 64

First workpiece 200

First split holes 202

Second workpiece 300

Second split middle hole 302

Fitting hole 304

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, it is to be noted that the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the two components can be connected in a mechanical mode, can be electrically connected or can be communicated with each other, can be directly connected, can be indirectly connected through an intermediate medium, and can be communicated with each other inside the two components or can be in interaction relation with each other. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, some embodiments of the present application provide a split device 100. The centering device 100 is used for centering and positioning a workpiece with a hole-shaped structure so as to facilitate assembly. Referring to fig. 9 in combination, in an embodiment of the present application, the workpiece may be a rear case of a mobile phone, for example, a first workpiece 200 shown in fig. 9, and the hole-shaped structure may be a first split hole 202 shown in fig. 9.

Referring to fig. 1 to 4 in combination, the centering device 100 includes a base 10 and a centering mechanism 20. The middle component 21 in fig. 3 is a perspective schematic view.

Specifically, the base 10 is configured to carry a first workpiece 200 having a first split aperture 202. The centering mechanism 20 comprises a centering assembly 21 and a power assembly 22; the middle component 21 is slidably arranged on the base 10 and is used for being opposite to the first middle hole 202, the middle component 21 comprises a sliding piece 211, two first middle strips 212 and a pushing piece 213, the sliding piece 211 is slidably arranged on the base 10 to be close to one end of the two first middle strips 212 under the driving of the power component 22, the two first middle strips 212 are arranged at intervals and are respectively connected with the sliding piece 211 in a rotating mode, one ends of the two first middle strips 212 are arranged in the sliding piece 211 and are respectively provided with a first inclined plane 2121, the first inclined planes 2121 of the two first middle strips 212 are arranged in a deviating mode, the other ends of the two first middle strips 212 are arranged outside the sliding piece 211 and face the first middle hole 202, the pushing piece 213 is slidably arranged in the sliding piece 211 to be relatively sliding piece 211 under the driving of the power component 22 to be close to one end of the two first middle strips 212, the pushing piece 213 is provided with two second inclined planes 2131 matched with the two first inclined planes 2121, the other ends of the two first middle strips 212 face to be arranged in a facing mode, the other ends of the two first middle strips 212 are inserted into the first middle strips 202 under the driving of the sliding piece 211 and face the first middle holes 213 to be far away from the first middle hole 202, and the first middle holes 213 are respectively driven by the first middle holes 213 are located in the middle holes 202 and are far away from the first middle holes 200.

When the centering device 100 is used, the first workpiece 200 having the first centering hole 202 is placed on the base 10, the first centering hole 202 and the centering component 21 are opposite to each other, the sliding piece 211 is driven by the power component 22 to move close to the first workpiece 200, the sliding piece 211 drives the two first centering bars 212 and the pushing piece 213 to move close to the first workpiece 200, so that the two first centering bars 212 are inserted into the first centering hole 202, meanwhile, the pushing piece 213 is driven by the power component 22 to move close to the two first centering bars 212, one ends of the two first centering bars 212 are close to each other by the cooperation of the two second inclined surfaces 2131 of the pushing piece 213 and the first inclined surfaces 2121 of the two first centering bars 212, and the sliding piece 211 is connected by the rotation of the two first centering bars 212, so that the other ends of the two first centering bars 212 are far away from each other to respectively abut against the hole wall of the first centering hole 202, thereby realizing centering and positioning of the first centering hole 202 on the first workpiece 200.

In some embodiments, the power assembly 22 may be, for example, two drive cylinders, one for moving the slider 211 and the other for being disposed within the slider 211 to move the pusher 213 relative to the slider.

In a specific embodiment, the sliding member 211 is provided with a receiving cavity 2111, the receiving cavity 2111 is substantially closed, one end of the two first sub-strips 212 and the pushing member 213 are disposed in the receiving cavity 2111, and the other ends of the two first sub-strips 212 extend out through side cavity walls of the receiving cavity 2111. It will be appreciated that the receiving chamber 2111 may also be open-ended.

In this embodiment, the power assembly 22 may include a first eccentric member 221, where the first eccentric member 221 includes a first rotating portion 2211 and a first abutting portion 2212 eccentrically connected to the first rotating portion 2211, the diameter of the first rotating portion 2211 is smaller than that of the first abutting portion 2212, the first rotating portion 2211 is rotatably disposed on the base 10, the first abutting portion 2212 is rotatably connected to the sliding member 211, and when the first eccentric member 221 eccentrically rotates, the sliding member 211 is driven to move away from the first workpiece 200 to move the base elastic member, and when the first eccentric member 221 reversely eccentrically rotates, the sliding member 211 is driven to move closer to the first workpiece 200. The direction in which the first eccentric member 221 eccentrically rotates is the direction indicated by the arrow in fig. 1, and the direction in which the first eccentric member 221 reversely eccentrically rotates is the opposite direction indicated by the arrow in fig. 1.

In a specific embodiment, in order to drive the sliding member 211 to slide along a straight line when the first eccentric member 221 rotates, the base 10 is provided with a bar-shaped groove 11, the extending direction of the bar-shaped groove 11 is perpendicular to the sliding direction of the sliding member 211, and the first rotating portion 2211 is movably disposed in the bar-shaped groove 11.

It will be appreciated that the bar grooves 11 may also be closed groove-like structures. It should be further understood that, in an embodiment, as shown in fig. 2, the bar-shaped groove 11 is an open bar-shaped groove, and then the power assembly 22 further includes a base elastic member 222, wherein the base elastic member 222 is embedded between the base 10 and the sliding member 211, and the extending direction of the base elastic member 222 is the same as the sliding direction of the sliding member 211, and is in a compressed state, so that the first rotating portion 2211 is always located inside the open bar-shaped groove 11 and is not separated from the bar-shaped groove 11.

In a specific embodiment, two spaced embedded grooves 12 are formed on the base 10, the number of the base elastic members 222 is two, the lower half parts of the two base elastic members 222 are disposed in the embedded grooves 12, and correspondingly, the sliding member 211 is provided with a groove structure (not shown) corresponding to the embedded grooves 12, and the upper half parts of the two base elastic members 222 are disposed in the corresponding groove structure. Thus, the groove structure on the sliding member 211 cooperates with the embedded groove 12 to locate the base elastic member 222 between the sliding member 211 and the base 10.

In a specific embodiment, the first rotating portion 2211 and the first abutting portion 2212 are connected by a first connecting portion 2214, the first abutting portion 2212 is coaxially arranged with the first connecting portion 2214, the first rotating portion 2211 is eccentrically arranged with the first connecting portion 2214, and the diameter of the first connecting portion 2214 is larger than the diameter of the first abutting portion 2212 and the diameter of the first rotating portion 2211. In this way, by providing the first connection portion 2214 and defining the diameter of the first connection portion 2214 to be larger than the diameter of the first abutment portion 2212 and the diameter of the first rotation portion 2211, the first eccentric 221 can perform a large range of eccentric rotation, further improving the movable range of the slider 211.

In a specific embodiment, the power assembly 22 further includes a first handle 223 and a first pin 224, the first abutment 2212 protrudes through the upper cavity wall of the receiving cavity 2111, and the first handle 223 is connected to the protruding portion of the first abutment 2212 by the first pin 224. Thus, by rotating the first handle 223, the first eccentric 221 is made to perform eccentric rotation and reverse eccentric rotation.

In this embodiment, the first abutting portion 2212 is located at a side of the pushing member 213 facing the first middle dividing strip 212, the middle dividing assembly 21 further includes a first elastic member 214, the first elastic member 214 is disposed in the accommodating cavity 2111 of the sliding member 211, one end of the first elastic member 214 is connected to an inner side of a side cavity wall of the accommodating cavity 2111 of the sliding member 211, the other end of the first elastic member 214 abuts against the pushing member 213 so that the pushing member 213 abuts against the first abutting portion 2212, and an extending direction of the first elastic member 214 is the same as a moving direction of the pushing member 213. The first abutting portion 2212 is provided with a avoiding groove 2213, when the first eccentric member 221 rotates, the avoiding groove 2213 is away from the pushing member 213, the first abutting portion 2212 abuts against the pushing member 213 and compresses the first elastic member 214, so that the first elastic member 214 generates elastic force, and when the first eccentric member 221 rotates eccentrically in the opposite direction, the avoiding groove 2213 faces the pushing member 213, and the first elastic member 214 is elastically restored to drive the pushing member 213 to move close to the two first middle-split strips 212. In this way, by forming the avoidance groove 2213 in the first abutting portion 2212, when the first eccentric member 221 reversely and eccentrically rotates, the first abutting portion 2212 forms avoidance to the pushing member 213 through the avoidance groove 2213, so that the pushing member 213 moves close to the two first middle separation strips 212 under the action of the elastic force of the first elastic member 214, and the power assembly 22 drives the pushing member 213 to move in the sliding member 211. Wherein the first elastic member 214 may be a spring.

In a specific embodiment, a mounting groove 2133 is formed on a side of the pushing member 213 near the first elastic member 214, the mounting groove 2133 is used for accommodating the first elastic member 214, an inclined groove 2132 is formed on a side of the pushing member 213 away from the first elastic member 214, and two opposite groove walls of the inclined groove 2132 are second inclined surfaces 2131. Thus, by providing the installation groove 2133, on one hand, the first elastic member 214 is installed and accommodated, so as to protect the first elastic member 214, thereby reducing the probability of bending deformation of the first elastic member 214, and on the other hand, the pushing member 213 is prevented from excessively compressing the first elastic member 214, so as to prolong the service life of the first elastic member 214; by providing the inclined surface groove 2132, the pushing member 213 has a space for accommodating the first abutment portion 2212, so that the second inclined surface 2131 is matched with the first inclined surface 2121 to rotate the first centering bar 212.

In this embodiment, the centering assembly 21 further includes a second centering bar 215, a second elastic member 216, and a retaining rod 217. The second middle section bar 215 is arranged between the two first middle section bars 212, one end of the second middle section bar 215 is provided with a positioning rod 2151, one end of the second middle section bar 215 is arranged in a containing cavity 2111 of the sliding piece 211, the second middle section bar 215 is slidably arranged in a first kidney-shaped hole 2112 of the sliding piece 211 through the positioning rod 2151, the first kidney-shaped hole 2112 is formed in the upper cavity wall of the containing cavity 2111, the other end of the second middle section bar 215 passes through the side cavity wall of the containing cavity 2111 to be arranged outside the sliding piece 211, a second elastic piece 216 is arranged in the sliding piece 211, a blocking rod 217 is arranged in the containing cavity 2111 of the sliding piece 211 and is connected with the upper cavity wall of the containing cavity 2111 of the sliding piece 211, and two ends of the second elastic piece 216 respectively block the blocking rod 217 and one end of the second middle section bar 215; the other end of the second centering bar 215 is provided with a centering portion 2152, so that when the sliding member 211 moves close to the first workpiece 200, the centering portion 2152 of the second centering bar 215 is elastically inserted into the first centering hole 202 under the elastic action of the second elastic member 216, so as to cooperate with the two first centering bars 212 to realize centering positioning of the first centering hole 202 of the first workpiece 200. The second elastic member 216 is a spring, and the lower end of the resisting rod 217 passes through the lower cavity wall of the accommodating cavity 2111 and the through hole 13 formed on the base 10, and the through hole 13 is an oval hole, so as to avoid interference between the resisting rod 217 and the base 10 when following the movement of the sliding member 211. The middle part 2152 of the second middle part 215 is two inclined surfaces provided up and down at the other end of the second middle part 215, and the middle part 2152 is conveniently inserted into the first middle part hole 202 through the two inclined surfaces.

In this embodiment, the middle assembly 21 further includes a third elastic member 218, where the third elastic member 218 is disposed in the accommodating cavity 2111 of the sliding member 211 and between the two first middle strips 212, and the third elastic member 218 is used to separate one ends of the two first middle strips 212 from each other for resetting. In this way, when the pushing member 213 is engaged with the first inclined surface 2121 by the second inclined surface 2131 to make one ends of the two first middle-dividing strips 212 approach each other, the third elastic member 218 is compressed to generate elastic force, and when the first eccentric member 221 rotates eccentrically in the opposite direction, the first abutting portion 2212 moves the pushing member 213 away from the two first middle-dividing strips 212, and the third elastic member 218 elastically restores to drive one ends of the two first middle-dividing strips 212 away from each other to restore, so that the two first middle-dividing strips 212 realize the restoring function, and simultaneously, the other ends of the two first middle-dividing strips 212 are made to approach each other to retract by rotation so as to be inserted into the first middle-dividing holes 202 again. Wherein the third elastic member 218 may be a spring.

In this embodiment, the centering mechanism 20 further includes a guide holder 23, the guide holder 23 is disposed on the base 10, and the centering assembly 21 is slidably disposed in the guide holder 23. In this way, the guide seat 23 is arranged so as to guide the moving direction of the centering assembly 21, and the centering positioning accuracy is ensured. The guide seat 23 may be provided with a guide groove 231, the sliding member 211 of the middle component 21 is adapted to be disposed in the guide groove 231, and the other ends of the two first middle strips 212 and the second middle strips 215 both movably pass through side groove walls of the guide groove 231, so as to pass through side groove walls of the guide groove 231 to be inserted into the first middle hole 202 when the sliding member 211 moves.

In this embodiment, the centering device 100 further includes a plurality of positioning members 30, the plurality of positioning members 30 are disposed on the base 10 and are distributed along the contour of the first workpiece 200, one surface of the guide seat 23 facing away from the centering component 21 is provided with an adapting surface 232 adapted to the first workpiece 200, the adapting surface 232 may be an outer side surface of a side slot wall of the guide slot 231, and the plurality of positioning members 30 are matched with the guide seat 23 to position the first workpiece 200. In this way, the positioning of the first workpiece 200 is achieved through the plurality of positioning members 30 and the guide seat 23, the guide seat 23 achieves the function of guiding the centering assembly 21 on one hand, and achieves the function of positioning the first workpiece 200 on the other hand, so that the components of the centering device 100 are reduced, and the cost is reduced.

In this embodiment, the separating device 100 further includes a limiting member 35, where the limiting member 35 is disposed on the base 10, and the limiting member 35 is used for supporting the first workpiece 200 on one hand, limiting the first workpiece 200 in the height direction on the other hand, so as to cooperate with the positioning members 30 and the guide seats 23 to position the first workpiece 200, thereby improving the positioning accuracy of the first workpiece 200.

Referring to fig. 9, in the present embodiment, the centering device 100 may also be used to fit a second workpiece 300 having a second centering hole 302 within the first centering hole 202 of the first workpiece 200.

Specifically, referring to fig. 1 and 2 in combination, the separating device 100 further includes a pressure maintaining mechanism 40, a fitting assembly 50, and a driving assembly 60.

Specifically, the pressure maintaining mechanism 40 is slidably disposed on the base 10, and the pressure maintaining mechanism 40 and the centering mechanism 20 are located on opposite sides of the first centering hole 202. The assembly 50 is movably disposed on the pressure maintaining mechanism 40, and the assembly 50 is used for carrying a second workpiece 300 having a second middle hole 302, where the second middle hole 302 is opposite to the first middle hole 202. The driving assembly 60 is used for driving the pressure maintaining mechanism 40 to move, and further driving the assembly 50 to move towards the first middle-dividing hole 202, so that the second workpiece 300 is inserted into the first middle-dividing hole 202, and further the middle-dividing mechanism 20 simultaneously performs middle-dividing positioning on the first middle-dividing hole 202 of the first workpiece 200 and the second middle-dividing hole 302 of the second workpiece 300. When the power assembly 22 drives the sliding member 211 to move close to the first workpiece 200, the two first middle-dividing strips 212 and the second middle-dividing strips 215 are sequentially inserted into the first middle-dividing holes 202 and the second middle-dividing holes 302, and when the pushing member 213 moves close to the two first middle-dividing strips 212, the other ends of the two first middle-dividing strips 212 are far away from each other to respectively abut against the hole wall of the first middle-dividing holes 202 and the hole wall of the second middle-dividing holes 302, so that middle-dividing positioning of the first middle-dividing holes 202 of the first workpiece 200 and the second middle-dividing holes 302 of the second workpiece 300 is realized.

The above-mentioned implementation process of assembling the first workpiece 200 and the second workpiece 300 by the centering device 100 is substantially as follows: mounting a second workpiece 300 having a second split aperture 302 on the mounting assembly 50; placing the assembly member 50, on which the second workpiece 300 is assembled, on the pressure maintaining mechanism 40; placing a first workpiece 200 having a first split hole 202 on the base 10, and positioning the first workpiece 200 by the plurality of positioning members 30, the limiting members 35 and the guide holders 23 such that the first split hole 202 is disposed substantially opposite to the second split hole 302 and such that the first split hole 202 is disposed opposite to the split assembly 21; the first eccentric part 221 is driven to eccentrically rotate in the opposite direction by the first handle 223, the sliding part 211 is driven to move close to the first workpiece 200, the sliding part 211 drives the first middle dividing strip 212 and the second middle dividing strip 215 to move close to the first workpiece 200, so that the first middle dividing strip 212 and the second middle dividing strip 215 sequentially pass through the first middle dividing hole 202 and the second middle dividing hole 302, meanwhile, the first elastic part 214 elastically recovers to drive the pushing part 213 to move close to the first middle dividing strip 212 and the second middle dividing strip 215, one ends of the two first middle dividing strips 212 are mutually close by the cooperation of the second inclined surface 2131 and the first inclined surface 2121, the other ends of the two first middle dividing strips 212 are mutually far away by rotation, and the other ends of the two first middle dividing strips 212 are mutually far away to respectively abut against the hole walls of the first middle dividing hole 202 and the second middle dividing hole 302, so that the middle dividing positioning of the first middle dividing hole 202 of the first workpiece 200 and the second middle dividing hole 302 of the second workpiece 300 is realized; the driving assembly 60 drives the pressure maintaining mechanism 40 to move close to the first middle dividing hole 202, so that the pressure maintaining mechanism 40 drives the assembly 50 to move close to the first middle dividing hole 202, and the second workpiece 300 is inserted into the first middle dividing hole 202, so that the assembly of the first workpiece 200 and the second workpiece 300 is realized. Wherein the process of inserting the second workpiece 300 into the first centering hole 202, the first centering bar 212 and the second centering bar 215 are synchronized with respect to the centering of the first centering hole 202 of the first workpiece 200 and the second centering hole 302 of the second workpiece 300.

In a specific embodiment, the other ends of the two first middle-dividing strips 212 are provided with step portions 2122, so that the other ends of the first middle-dividing strips 212 shrink in a direction approaching the first workpiece 200, so as to be inserted into the first middle-dividing holes 202 and the second middle-dividing holes 302 simultaneously and abut against the hole walls of the first middle-dividing holes 202 and the hole walls of the second middle-dividing holes 302 simultaneously, thereby completing the dividing. For example, when the first centering bar 212 simultaneously centers the first centering hole 202 and the second centering hole 302, the stepped portion 2122 of the first centering bar 212 is a two-stage step, each of which abuts against the hole wall of the first centering hole 202 and the hole wall of the second centering hole 302, respectively, so as to simultaneously center the first centering hole 202 and the second centering hole 302. For another example, when the first centering bar 212 is used to center the first centering hole 202, the step portion 2122 of the first centering bar 212 may be a step for abutting against the wall of the first centering hole 202.

In a specific embodiment, the first centering bar 212 and the second centering bar 215 need to be inserted into the first centering hole 202 and the second centering hole 302 to center the first workpiece 200 and the second workpiece 300, since the first centering bar 212 will abut against the wall of the first centering hole 202, if the first centering bar 212 is always located in the first centering hole 202, the second workpiece 300 cannot be assembled in the first centering hole 202, and in order to enable the second workpiece 300 to be assembled in the first centering hole 202 smoothly, when the second workpiece 300 needs to be moved toward the first workpiece 200, in this embodiment, when the driving assembly 60 drives the pressure maintaining mechanism 40 to move close to the first middle hole 202, the driving assembly 60 is further used to move away from the first workpiece 200 against the middle mechanism 20, so that the first middle strip 212 of the middle mechanism 20 moves together with the assembly 50 and the second workpiece 300, so that the first middle strip 212 can be separated from the hole wall of the first middle hole 202 in time, interference caused by the first middle strip 212 to assembly of the first workpiece 200 and the second workpiece 300 is avoided, and the assembly yield is improved.

Referring to fig. 5 and 6 in combination, in the present embodiment, the pressure maintaining mechanism 40 includes a base 41, a first abutting rod 42, a second abutting rod 43, a fourth elastic member 44 and a fifth elastic member 45, the base 41 is slidably disposed in the accommodating groove 14 of the base 10, the assembly component 50 is movably disposed in the accommodating groove 411 of the base 41, the first abutting rod 42 and the second abutting rod 43 are disposed at intervals, the first abutting rod 42 and the second abutting rod 43 are movably connected with the base 41, one end of the first abutting rod 42 and one end of the second abutting rod 43 are disposed in the base 41, the other end of the first abutting rod 42 and the other end of the second abutting rod 43 are disposed outside the base 41, the fourth elastic member 44 and the fifth elastic member 45 are disposed in the base 41, one end of the fourth elastic member 44 is connected with the base 41, one end of the fifth elastic member 45 is connected with the base 41, the other end of the fifth elastic member 45 is connected with one end of the second abutting rod 43, the fourth elastic member 44 and the fifth elastic member 45 are both extended in the same direction as the first direction of the base 41, and the second elastic member 45 is inserted into the first hole 200, and the first elastic member is pressed into the first workpiece 50, and the second workpiece is pressed into the first hole 200. The fourth elastic member 44 and the fifth elastic member 45 may be springs, and the length of the first abutting rod 42 is greater than the length of the second abutting rod 43.

In this way, by providing the pressure maintaining mechanism 40 including the base 41, the first abutting rod 42, the second abutting rod 43, the fourth fifth elastic member and the fifth elastic member 45, when the driving assembly 60 drives the pressure maintaining mechanism 40 to move, the base 41 of the pressure maintaining mechanism 40 drives the first abutting rod 42, the second abutting rod 43, the third elastic member 218, the fourth elastic member 44 and the assembly 50 to move together until the second workpiece 300 on the assembly 50 is inserted into the first middle hole 202, the base 41 continues to move until the first abutting rod 42 elastically abuts against the first workpiece 200 under the elastic force of the fourth elastic member 44, and the second abutting rod 43 elastically abuts against the assembly 50 under the elastic force of the fifth elastic member 45, so that after the second workpiece 300 is inserted into the first middle hole 202, the second workpiece 300 is pressurized, so as to improve the assembly yield of the second workpiece 300 and the first workpiece 200.

In a specific embodiment, the number of the first abutting rods 42 and the fourth elastic members 44 is two, so that the first workpiece 200 is kept balanced by arranging the two first abutting rods 42 and the fourth elastic members 44 so as to avoid deflection or deformation caused by uneven stress of the first workpiece 200 when the first workpiece 200 is abutted.

In a specific embodiment, the base 41 has abutment guide portions 412 disposed on the bottom of the accommodating slot 411, and the number of the abutment guide portions 412 is equal to and corresponds to the number of the first abutment bars 42, and the first abutment bars 42 movably pass through the corresponding abutment guide portions 412. Thus, by setting the abutment guide portion 412, on one hand, the first abutment rod 42 is guided, so that the first abutment rod 42 is prevented from being deflected when moving due to the relatively long length, and on the other hand, the first abutment rod 42 is prevented from being bent and deformed when being forced to abut against the first workpiece 200 due to the relatively long length, so that the service life of the first abutment rod 42 is prolonged.

In a specific embodiment, the pressure maintaining mechanism 40 further includes two limit guides 46, the two limit guides 46 are disposed on two sides of the base 41, and an end of the limit guide 46 near the centering mechanism 20 has a protruding resisting portion 461 perpendicular to the sliding direction of the base 41. Thus, by arranging the two limiting guide pieces 46, the assembly 50 is limited and guided conveniently, the situation that the assembly 50 is deflected when sliding on the pressure maintaining mechanism 40 is avoided, and the assembly yield is ensured; by providing the resisting part 461, when the first workpiece 200 is placed on the base 10, the positioning piece 30, the limiting piece 35, the adapting surface 232 of the guide seat 23 and the resisting part 461 cooperate to be used for positioning the first workpiece 200, so that the positioning accuracy of the first workpiece 200 is improved. Wherein, in the initial state, the resisting part 461 is flush with the adapting surface 232 of the guide seat 23, and when the first workpiece 200 is placed on the base 10, the resisting part 461, the adapting surface 232 of the guide seat 23, the positioning element 30 and the limiting element 35 cooperate to position the first workpiece 200; after the second workpiece 300 is assembled to the first workpiece 200, the assembly 50 moves, and the resisting portion 461 is separated from the first workpiece 200, at this time, the adapting surface 232 of the guide holder 23, the positioning member 30 and the limiting member 35 cooperate to position the first workpiece 200.

Referring to fig. 2, in the present embodiment, the driving assembly 60 includes a second eccentric member 61 and a connecting rod 62, the connecting rod 62 is slidably disposed in the sliding hole 15 of the base 10, the sliding hole 15 is communicated with the through hole 13, the sliding hole 15 is divided into a plurality of discontinuous holes by the accommodating groove 14 of the base 10 and other holes, the length of the connecting rod 62 is smaller than that of the sliding hole 15, the connecting rod 62 is connected with the base 41 (see fig. 6) of the pressure maintaining mechanism 40, a bar hole 621 is provided at one end of the connecting rod 62, the extending direction of the bar hole 621 is perpendicular to the sliding direction of the connecting rod 62, the other end of the connecting rod 62 is disposed opposite to the stop lever 217 of the centering mechanism 20, and the stop lever 217 extends into the sliding hole 15. The second eccentric member 61 includes a second rotating portion 611 and a second abutting portion 612 eccentrically connected to the second rotating portion 611, where the second rotating portion 611 is rotatably disposed in the base 10, and when the second abutting portion 612 is eccentrically rotated by being rotatably disposed in the bar-shaped hole 621, the driving link 62 slides near the abutting bar 217 of the centering mechanism 20 and drives the base 41 and the assembly 50 of the pressure maintaining mechanism 40 to move near the first centering hole 202, so that the second workpiece 300 is inserted into the first centering hole 202, and after the link 62 moves a positioning shift, the abutting bar 217 abutting the centering mechanism 20 moves away from the first centering hole 202, so that the abutting bar 217 drives the centering mechanism 20 to move away from the first centering hole 202, and the first centering bar 212 is separated from the wall of the first centering hole 202, so that the second workpiece 300 can be smoothly inserted into the first centering hole 202; when the second eccentric member 61 is rotated reversely and eccentrically, the driving link 62 slides away from the centering mechanism 20 and drives the base 41 and the assembly member 50 of the pressure maintaining mechanism 40 to move away from the first centering hole 202 for resetting. The eccentric rotation direction of the second eccentric member 61 is the direction shown by the arrow in fig. 1, and the reverse eccentric rotation direction of the second eccentric member 61 is the reverse direction shown by the arrow in fig. 1, and the diameter of the second rotating portion 611 is larger than the diameter of the second abutting portion 612.

When the second eccentric member 61 rotates, the second rotating portion 611 rotates on the base 10, and the second abutting portion 612 moves eccentrically around the second rotating portion 611, and the second abutting portion 612 movably abuts against the wall of the bar-shaped hole 621 in the bar-shaped hole 621, so that the driving link 62 moves in the sliding hole 15 near the abutting bar 217 of the centering mechanism 20. When the second eccentric member 61 rotates eccentrically in the opposite direction, the second rotating portion 611 rotates on the base 10, and the second abutting portion 612 moves eccentrically around the second rotating portion 611, and the second abutting portion 612 movably abuts against the wall of the bar-shaped hole 621 in the bar-shaped hole 621, so that the driving link 62 moves away from the abutment bar 217 of the centering mechanism 20 in the sliding hole 15.

In a specific embodiment, the second rotating portion 611 and the second abutting portion 612 are connected by a second connecting portion 613, the second rotating portion 611 is coaxially disposed with the second connecting portion 613, the second abutting portion 612 is eccentrically disposed with the second connecting portion 613, and the diameter of the second connecting portion 613 is larger than the diameter of the second rotating portion 611 and the diameter of the second abutting portion 612. In this way, by providing the second connecting portion 613 and defining the diameter of the second connecting portion 613 to be larger than the diameter of the second abutting portion 612 and the diameter of the second rotating portion 611, the second eccentric 61 can perform a larger range of eccentric rotation, further raising the movable range of the link 62.

In a specific embodiment, the driving assembly 60 further includes a second handle 63 and a second pin 64, and the second handle 63 is connected to the second rotating part 611 through the second pin 64. Thus, by rotating the second handle 63, the second eccentric 61 is made to perform eccentric rotation and reverse eccentric rotation.

Referring to fig. 7 and 8 in combination, in the present embodiment, the assembly 50 includes an assembly body 51, an assembly member 52 and a sixth elastic member 53, where the assembly body 51 is movably disposed on the pressure maintaining mechanism 40, and the movable disposition can be understood as: the assembly body 51 is detachable from the pressure maintaining mechanism 40, the assembly body 51 is also capable of sliding on the pressure maintaining mechanism 40, the assembly member 52 is slidably arranged on the assembly body 51, one end of the assembly member 52 is used for being inserted into the second split hole 302 so that the assembly member 50 carries the second workpiece 300, and two ends of the sixth elastic member 53 respectively abut against the assembly body 51 and the assembly member 52. In this way, the assembly component 50 is provided with the sixth elastic member 53 and the assembly member 52, and the assembly member 52 can extend out of the assembly body 51 under the elastic action of the sixth elastic member 53 so as to be conveniently inserted into the second split hole 302, so that the second workpiece 300 is carried; the first and second centering bars 212, 215 may also push the fitting 52 as the first and second centering bars 212, 215 are inserted into the second centering hole 302, the fitting 52 creating a back-out for the first and second centering bars 212, 215 to avoid interference. The sixth elastic member 53 may be a spring or an elastic thimble, or may be a component formed by the spring and a rod-shaped object.

In a specific embodiment, the assembly 51 includes a first assembly portion 511 and a second assembly portion 512, the first assembly portion 511 and the second assembly portion 512 are connected such that the assembly 51 is substantially L-shaped, and the first assembly portion 511 is provided with a second kidney-shaped hole 513; the assembly member 52 includes an assembly plate 521 and an assembly rod 522, the assembly plate 521 is slidably disposed in the first assembly portion 511 and can extend out of the first assembly portion 511, the sixth elastic member 53 is disposed in the second assembly portion 512, one end of the assembly rod 522 is connected to the assembly plate 521 and is vertically connected, such that the assembly member 52 is substantially L-shaped or T-shaped, the other end of the assembly rod 522 protrudes from the first assembly portion 511 and is connected to the sixth elastic member 53, and the assembly rod 522 is movably disposed in the second kidney-shaped hole 513. Correspondingly, the bottom of the accommodating slot 411 of the base 41 is provided with a first through hole 413 and a second through hole 414 which are communicated, the size of the first through hole 413 is larger than that of the second through hole 414, the base 10 is provided with a shrinkage stop lever 16, and the shrinkage stop lever 16 extends into the second through hole 414. Thus, when the assembly 50 is placed, the second assembly portion 512 is placed in the second through hole 414, the first assembly portion 511 is located in the accommodating slot 411, the assembly rod 522 is located in the second through hole 414, when the base 41 drives the assembly 50 to move close to the first middle-split hole 202, the assembly rod 522 moves in the second through hole 414 and abuts against the shrinkage stop lever 16 located in the second through hole 414, and because the shrinkage stop lever 16 is fixedly arranged on the base 10, the assembly rod 522 drives the assembly plate 521 to move away from the first middle-split hole 202 to shrink into the first assembly portion 511 and compress the sixth elastic member 53, so that the assembly plate 521 is separated from the second workpiece 300, and the first middle-split bar 212 and the second middle-split bar 215 are conveniently inserted into the second middle-split hole 302, and interference of the assembly plate 521 on the first middle-split bar 212 and the second middle-split bar 215 is reduced.

In a specific embodiment, the assembly component 50 further includes two seventh elastic members 54, where the two seventh elastic members 54 are disposed on the end surface of the first assembly portion 511, and the two seventh elastic members 54 are configured to be inserted into the assembly hole 304 of the second workpiece 300, so that the assembly component 50 carries the second workpiece 300. The seventh elastic element 54 may be an elastic thimble. Thus, by providing the seventh elastic member 54, the second work 300 is carried in cooperation with the mounting plate 521; when the fitting assembly 50 moves toward the first centering hole 202, the seventh elastic member 54 is contracted by the abutment of the first workpiece 200, and does not interfere with the first workpiece 200.

The centering device 100 of the embodiment of the application has compact structure and exquisite design, an operator can realize centering positioning of the first centering hole 202 of the first workpiece 200 and the second centering hole 302 of the second workpiece 300 by rotating the first handle 223 to drive the power assembly 22 to drive the sliding part 211 and the pushing part 213 to move, and can assemble the second workpiece 300 on the first workpiece 200 by rotating the second handle 63 to drive the pressure maintaining mechanism 40 and the assembling assembly 50 to realize the function of assembling the second workpiece 300 on the first workpiece 200, so that the centering device 100 can simplify the operation steps of the operator and reduce the labor intensity of the operator; because the centering mechanism 20 is of a mechanical structure, the centering mechanism 20 can form a unified centering positioning standard, and the centering positioning precision is improved, so that the assembly yield is improved.

It will be evident to those skilled in the art that the application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present application without departing from the spirit and scope of the technical solution of the present application.

Claims (10)

1. A split device, comprising: a base for carrying a first workpiece having a first split hole;

the device is characterized in that the device also comprises:

the centering mechanism comprises a centering component and a power component;

the device comprises a base, a first middle dividing strip, a second middle dividing strip, a pushing piece, a first middle dividing strip, a second middle dividing strip and a second middle dividing strip, wherein the middle dividing strip is arranged on the base in a sliding mode and is used for being arranged opposite to the first middle dividing hole, the sliding piece is arranged on the base in a sliding mode and is close to the first workpiece under the driving of the power component, the first middle dividing strip is arranged at intervals and is connected with the sliding piece in a rotating mode, one end of the first middle dividing strip is arranged in the sliding piece and is provided with a first inclined surface, the first inclined surface of the first middle dividing strip is arranged in a deviating mode, the other end of the first middle dividing strip is arranged outside the sliding piece, the pushing piece is arranged in the sliding piece in a sliding mode so as to be close to one end of the first middle dividing strip under the driving of the power component, the second inclined surface of the pushing piece is arranged in a matching mode with the two second inclined surfaces, the second inclined surface of the pushing piece faces the first middle dividing strip is arranged in a mode, the other end of the first middle dividing strip is inserted into the first middle dividing hole and is in the first middle dividing hole of the first middle dividing hole, and the first middle dividing hole is far away from the first middle dividing hole under the driving of the first middle dividing hole, and the first middle dividing hole is achieved.

2. The device according to claim 1, wherein the power assembly comprises a first eccentric member, the first eccentric member comprises a first rotating portion and a first abutting portion eccentrically connected with the first rotating portion, the first rotating portion is rotatably arranged on the base, and the first abutting portion is rotatably connected with the sliding member so that the sliding member is driven to be far away from or close to a first workpiece when the first eccentric member eccentrically rotates.

3. The centering device of claim 2, wherein the first abutment is located on a side of the pushing member facing the first centering bar, the centering assembly further comprising a first elastic member disposed in the sliding member, one end of the first elastic member being connected to the sliding member, the other end of the first elastic member being abutted to the pushing member so that the pushing member abuts against the first abutment, the extending direction of the first elastic member being the same as the moving direction of the pushing member;

and the first abutting part is provided with an avoidance groove, so that when the first eccentric part rotates, the avoidance groove faces the pushing part to further enable the first elastic part to drive the pushing part to move close to the two first middle strips.

4. A centering device as claimed in claim 3, wherein the centering assembly further comprises a second centering bar, a second elastic member and a blocking bar, the second centering bar is arranged between the two first centering bars, one end of the second centering bar is provided with a positioning bar, the second centering bar is slidably arranged in a first kidney-shaped hole of the sliding member through the positioning bar, the other end of the second centering bar is arranged outside the sliding member, the blocking bar is arranged in the sliding member and is connected with the sliding member, and the second elastic member respectively abuts against one ends of the blocking bar and the second centering bar; the other end of the second middle dividing strip is provided with a middle dividing part, so that when the sliding piece moves close to the first workpiece, the middle dividing part of the second middle dividing strip is elastically inserted into the first middle dividing hole, and the middle dividing of the first middle dividing hole of the first workpiece is realized.

5. The centering device of claim 1, wherein the centering mechanism further comprises a guide seat, the guide seat being provided on the base, the centering assembly being slidably provided within the guide seat;

the centering device further comprises a plurality of positioning pieces, the positioning pieces are arranged on the base and distributed along the outline of the first workpiece, and the positioning pieces are matched with the guide seats to position the first workpiece.

6. The splitting device of claim 1, wherein said splitting assembly further comprises a third resilient member disposed within said slider and between said two first splitting straps, said third resilient member being adapted to urge one ends of said two first splitting straps away from each other for return.

7. The splitting device of claim 1, wherein the splitting device further comprises:

the pressure maintaining mechanism is arranged on the base in a sliding manner and positioned on two opposite sides of the first middle dividing hole with the middle dividing mechanism;

the assembly component is movably arranged on the pressure maintaining mechanism and is used for bearing a second workpiece with a second middle hole, and the second middle hole is opposite to the first middle hole;

the driving assembly is used for driving the pressure maintaining mechanism to move, and then driving the assembly to move towards the first middle dividing hole so that the second workpiece is inserted into the first middle dividing hole, and then the middle dividing mechanism can divide the first middle dividing hole of the first workpiece and the second middle dividing hole of the second workpiece at the same time.

8. The device as claimed in claim 7, wherein the pressure maintaining mechanism comprises a base, a first abutting rod, a second abutting rod, a fourth elastic member and a fifth elastic member, the base is slidably disposed on the base, the assembly component is movably disposed on the base, the first abutting rod and the second abutting rod are disposed at intervals, the first abutting rod and the second abutting rod are movably connected with the base, one end of the first abutting rod and one end of the second abutting rod are disposed in the base, the other end of the first abutting rod and the other end of the second abutting rod are disposed outside the base, the fourth elastic member and the fifth elastic member are disposed in the base, one end of the fourth elastic member is connected with the base, the other end of the fourth elastic member is connected with one end of the first abutting rod, one end of the fifth elastic member is connected with the base, the other end of the fifth elastic member is connected with one end of the second abutting rod, the other end of the first elastic member and the second elastic member are connected with the second abutting rod, the other end of the fourth elastic member and the second elastic member are connected with the second abutting rod, the second elastic member is in the same direction, and the second elastic member is inserted into the first elastic member and the second elastic member is used for pressing the assembly component, and the second elastic member is inserted into the second elastic member.

9. The centering device according to claim 7, wherein the driving assembly comprises a second eccentric part and a connecting rod, the connecting rod is slidably arranged on the base, the connecting rod is connected with the pressure maintaining mechanism, a strip-shaped hole is formed in one end of the connecting rod, the other end of the connecting rod is arranged opposite to the centering mechanism, the second eccentric part comprises a second rotating part and a second abutting part eccentrically connected with the second rotating part, the second rotating part is rotatably arranged on the base, the second abutting part is rotatably arranged in the strip-shaped hole, when the second eccentric part eccentrically rotates, the connecting rod is driven to slide close to the centering mechanism, the pressure maintaining mechanism and the assembly are driven to be close to the first centering hole, so that a second workpiece is inserted into the first centering hole, and the second workpiece abuts against the centering mechanism to be far away from the first centering hole, so that the first centering rod is far away from the first centering hole.

10. The centering device according to claim 7, wherein the assembly component comprises an assembly body, an assembly part and a sixth elastic piece, the assembly body is movably arranged on the pressure maintaining mechanism, the assembly part is slidably arranged on the assembly body, one end of the assembly part is used for being inserted into the second centering hole so that the assembly component carries the second workpiece, and two ends of the sixth elastic piece respectively elastically support the assembly body and the assembly part.