CN210349983U

CN210349983U - Pretreatment device

Info

Publication number: CN210349983U
Application number: CN201921860594.8U
Authority: CN
Inventors: 杜义贤; 黄付延; 陈德; 罗剑; 王俊文; 黄金淼
Original assignee: Guangdong Lyric Robot Intelligent Automation Co Ltd
Current assignee: Spic Hydrogen Energy Technology Development Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-04-17
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a preprocessing device, it includes feed mechanism, outward appearance detection mechanism, gas tightness detection mechanism and first transfer mechanism, on the transfer route of first transfer mechanism was located respectively to feed mechanism, outward appearance detection mechanism and gas tightness detection mechanism, feed mechanism was used for the material loading of product, product after first transfer mechanism transferred the material loading carries out the outward appearance to outward appearance detection mechanism and detects to the product after transferring outward appearance and detecting and carrying out the gas tightness to gas tightness detection mechanism and detect. The utility model provides a utility model discloses a cooperation setting of feed mechanism, outward appearance detection mechanism, gas tightness detection mechanism and first transfer mechanism for the automatic feeding of product, pretreatment processes such as outward appearance detection and gas tightness detection go on in succession, and then have promoted the preliminary treatment efficiency of product batchization, guarantee subsequent production efficiency.

Description

Pretreatment device

Technical Field

The utility model relates to a production facility technical field specifically, relates to a preprocessing device.

Background

Before the production of some products, the parts required for production are required to be pretreated, and then the parts are subjected to loading production, for example, membrane electrode pretreatment is carried out to ensure the quality and yield of the finished products in subsequent production. However, in the prior art, the membrane electrode is pretreated by a plurality of separate machines, which results in poor continuity of pretreatment processes, and further affects the batch pretreatment efficiency of the membrane electrode, and the feeding production efficiency of the membrane electrode after the subsequent pretreatment becomes low.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model provides a preprocessing device.

The utility model discloses a pretreatment device, which comprises a feeding mechanism, an appearance detection mechanism, an air tightness detection mechanism and a first transfer mechanism; the feeding mechanism, the appearance detection mechanism and the air tightness detection mechanism are respectively arranged on a transfer path of the first transfer mechanism; the feeding mechanism is used for feeding products, the first transfer mechanism transfers the products subjected to feeding to the appearance detection mechanism for appearance detection, and transfers the products subjected to appearance detection to the air tightness detection mechanism for air tightness detection.

According to an embodiment of the present invention, the apparatus further comprises a second transferring mechanism and a discharging mechanism; and the second transfer mechanism transfers the product after the air tightness detection is finished to the blanking mechanism, and the blanking mechanism carries out blanking on the product qualified in detection.

According to an embodiment of the present invention, the apparatus further comprises a buffer mechanism; the buffer memory mechanism is arranged on the transfer path of the second transfer mechanism and used for detecting buffer memory blanking of unqualified products.

According to an embodiment of the present invention, the feeding mechanism includes a feeding portion, a tray transferring portion, and a tray discharging portion; the feeding part and the material tray discharging part are sequentially arranged on a transfer path of the material tray transfer part; the material loading part is used for loading a material tray loaded with products, and the material tray transfer part transfers the unloaded material tray to the material tray discharging part for discharging.

According to an embodiment of the present invention, the feeding mechanism further comprises a tray clamping portion; the material tray clamping part is arranged at the material loading position of the material loading part and clamps the material tray loaded with products.

According to an embodiment of the present invention, the appearance inspection mechanism includes a transfer turning part, an appearance inspection bearing part, and an appearance inspection part; the appearance detection bearing part and the appearance detection part are respectively arranged on a transfer path of the transfer overturning part; the appearance detection bearing part is used for bearing the product, the appearance detection part performs appearance detection on one surface of the product, the transferring and overturning part adsorbs and overturns the product, and the appearance detection part performs appearance detection on the other surface of the overturned product.

According to an embodiment of the present invention, the air tightness detecting mechanism includes an air tightness detecting bearing portion, an air tightness detecting pressing portion, and an air tightness detecting portion; the product bears in the position that bears of airtight detection bearing part, and airtight detection nip portion carries out the pressfitting to the product that bears the position, and airtight detection portion carries out the gas tightness to the product after the pressfitting and detects.

According to an embodiment of the present invention, the airtight detection carrying portion has a lower module, and the airtight detection press-fit portion has an upper module; the lower module is matched with the upper module, and the lower module and the upper module are matched to mold the product to form a sealed space for the air tightness detection part to perform air tightness detection.

According to an embodiment of the present invention, the first transfer mechanism includes a transfer driving portion and a transfer adsorbing portion; the output end of the transfer driving part is connected with the transfer adsorption part; the transfer adsorption part adsorbs products, and the transfer driving part drives the products adsorbed by the transfer adsorption part to be transferred.

According to an embodiment of the present invention, the transfer adsorption part includes an adsorption bearing part, an adsorption part and an avoidance part; the avoiding part is arranged on the adsorption bearing part; the adsorption bearing part is used for bearing products, the adsorption part is used for adsorbing the products borne by the adsorption bearing part, and the avoidance part is used for avoiding the vulnerable parts of the products adsorbed by the adsorption part.

This application sets up through the cooperation of feed mechanism, outward appearance detection mechanism, gas tightness detection mechanism and first transfer mechanism for the automatic feeding of product, pretreatment processes such as outward appearance detection and gas tightness detection go on in succession, and then have promoted the preliminary treatment efficiency of product batchization, guarantee subsequent production efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a pretreatment apparatus in this embodiment;

FIG. 2 is a schematic structural diagram of a feeding mechanism in this embodiment;

FIG. 3 is a schematic structural view of the transfer adsorption part in the present embodiment;

FIG. 4 is a schematic view of another perspective of the transfer adsorption part in the present embodiment;

FIG. 5 is a schematic structural view of a product in this embodiment;

FIG. 6 is a schematic structural view of an adsorption carrying portion, an adsorption portion and an escape portion in another embodiment;

FIG. 7 is a schematic structural diagram of an appearance inspection mechanism according to the present embodiment;

FIG. 8 is a schematic structural view of a gas tightness detecting mechanism in the present embodiment;

FIG. 9 is a schematic structural view of the lower mold member in this embodiment;

FIG. 10 is a schematic view showing the direction of leakage of nitrogen gas in the airtight test of the product in this example;

FIG. 11 is a schematic view of a pretreatment device according to another embodiment.

Description of reference numerals:

1. a feeding mechanism; 11. a feeding part; 111. a feeding conveying assembly; 112. a feeding jacking assembly; 12. A tray transfer section; 13. a material tray blanking part; 131. a tray conveying assembly; 132. a material tray jacking assembly; 14. a tray clamping part; 2. an appearance detection mechanism; 21. a transfer turning part; 211. a transfer drive assembly; 2111. A first transfer drive member; 2112. a second transfer drive member; 212. a turnover assembly; 2121. turning over the driving piece; 2122. turning over the adsorption piece; 2123. a connecting plate; 21221. overturning the platform; 212211, a null bit; 21222. an adsorbing member; 213. transferring the roll-over stand; 2131. supporting the flat plate; 22. an appearance detection bearing part; 221. a bearing support frame; 222. a load-bearing platform; 23. an appearance detection unit; 231. an appearance detection frame; 2311. an appearance detection support frame; 23111. adjusting the groove; 2312. an appearance detection adjusting frame; 232. A detection component; 2321. an appearance detecting member; 2322. an appearance detection light source unit; 3. an air tightness detection mechanism; 31. an airtight detection carrying part; 311. a lower mold part; 3111. a lower template; 31111. a sealing groove; 31112, separating groove strips; 3112. a detection hole; 3113. a vent hole; 3114. a gasket; 3115. positioning pins; 312. an air tightness detection frame; 3121. a frame plate; 32. an air-tightness detection press-fit portion; 321. an upper mold part; 322. a pressing driving part; 3221. an output rod; 323. pressing the bracket; 324. a pressure sensing member; 325. pressing the guide piece; 33. an air-tightness detecting section; 4. a first transfer mechanism; 41. a transfer drive section; 421. an adsorption bearing part; 422. an adsorption part; 4221. an adsorbing member; 42211. a suction cup; 42212. a panel; 4222. a venting end; 423. an avoidance part; 424. a material taking reinforcement part; 425. a material taking driving part; 426. a material taking support part; 427. A material taking positioning part; 4271. taking a material vision positioning piece; 4272. taking a material light source component; 4273. taking a material and positioning frame; 5. a second transfer mechanism; 6. a blanking mechanism; 7. a caching mechanism.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

It should be noted that all the directional indicators in the embodiments of the present invention, such as upper, lower, left, right, front and rear … …, are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

For further understanding of the contents, features and functions of the present invention, the following embodiments will be exemplified in conjunction with the accompanying drawings as follows:

referring to fig. 1, fig. 1 is a schematic structural diagram of the pretreatment device in this embodiment. The pretreatment device in this embodiment includes a feeding mechanism 1, an appearance detection mechanism 2, an air-tightness detection mechanism 3, and a first transfer mechanism 4. The feeding mechanism 1, the appearance detection mechanism 2 and the air tightness detection mechanism 3 are respectively arranged on a transfer path of the first transfer mechanism 4. The feeding mechanism 1 is used for feeding products, the first transfer mechanism 4 transfers the products subjected to feeding to the appearance detection mechanism 2 for appearance detection, and transfers the products subjected to appearance detection to the air tightness detection mechanism 3 for air tightness detection.

Through the cooperation setting of feed mechanism 1, outward appearance detection mechanism 2, gas tightness detection mechanism 3 and first transfer mechanism 4 for preliminary treatment processes such as the automatic feeding of product, outward appearance detection and gas tightness detection go on in succession, and then have promoted the preliminary treatment efficiency of product batchization, guarantee subsequent production efficiency. The product in this example is a membrane electrode.

Referring back to fig. 1, further, the pretreatment device in this embodiment further includes a second transfer mechanism 5 and a blanking mechanism 6. The second transfer mechanism 5 transfers the product after the air tightness detection to the blanking mechanism 6, and the blanking mechanism 6 carries out blanking on the product qualified in detection. Preferably, the preprocessing device in this embodiment further includes a buffer mechanism 7. The buffer mechanism 7 is arranged on the transfer path of the second transfer mechanism 5, and the buffer mechanism 7 is used for detecting the buffer blanking of unqualified products. The qualified products of the detection are shunted and transferred to the blanking mechanism 6 through the second transfer mechanism 5, and the unqualified products of the shunting detection are shunted and transferred to the cache mechanism 7, so that the good membrane electrode is used for subsequent production, and the processing of the bad membrane electrode is facilitated.

With continued reference to fig. 2, fig. 2 is a schematic structural diagram of the feeding mechanism in this embodiment. Further, the feeding mechanism 1 includes a feeding portion 11, a tray transfer portion 12, and a tray discharging portion 13. The loading part 11 and the tray unloading part 13 are sequentially arranged on a transfer path of the tray transfer part 12. The loading part 11 is used for loading a tray on which a product is loaded, and the tray transfer part 12 transfers an empty tray to the tray unloading part 13 for unloading. Through the cooperation setting of material loading portion 11, charging tray transfer portion 12 and charging tray unloading portion 13, realized waiting to treat the charging tray of preliminary treatment product and pile up the material loading to no-load charging tray shifts and unloading, promoted the material loading efficiency of waiting to treat the preliminary treatment product.

Specifically, the loading part 11 includes a loading conveying assembly 111 and a loading jacking assembly 112. The feeding jacking assembly 112 is arranged at the tail end of the feeding conveying assembly 111. The charging tray that piles up the product is placed in the top of material loading conveying subassembly 111, and then material loading conveying subassembly 111 conveying is piled up the charging tray that has the product and is removed to the end of self, and later, jacking subassembly 112 jacking charging tray for the product that the charging tray bore arrives the material loading level, and first transfer mechanism 4 shifts the product of material loading level, moves to outward appearance detection mechanism 2 and carries out outward appearance detection. The feeding conveying assembly 111 in this embodiment may adopt a combination of a bracket, a motor, a conveying roller and a conveying belt, wherein the conveying belt is reserved with an actuating vacancy for the jacking end of the feeding jacking assembly 112, for example, two conveying belts arranged in parallel are adopted, and a space is provided between the two conveying belts, and the space is used as the actuating vacancy for the feeding jacking assembly 112. The loading and lifting assembly 112 may employ a linear module and a pallet, wherein the linear module drives the pallet to move linearly along a direction perpendicular to the conveying belt. The charging tray that bears the weight of the product is placed on the surface at conveyer belt top, and the motor passes through two conveyer belt synchronous motion of conveyer roller drive, drives the charging tray and removes the end to the conveyer belt, and linear module drive layer board holds up the charging tray from the interval between two conveyer belts and rises to the material level. Preferably, a position sensor is provided at the end of the conveyor belt and at the loading level to facilitate position control, for example a photo sensor of the opposite type. Preferably, a photoelectric sensor is further arranged at the loading position to detect whether the material tray is in an empty state or not, so that the transfer control of the empty material tray is facilitated. The tray transfer part 12 is transversely arranged above the feeding conveying component 111 through a portal frame, and after products carried by the trays at the feeding position are completely transferred by the first transfer mechanism 4, the tray transfer part 12 transfers the unloaded trays to the tray discharging part 13. The tray transfer part 12 in this embodiment can adopt a linear module, an air cylinder and a clamping jaw, or match with a suction cup, and the details are not described here. The tray blanking portion 13 includes a tray conveying assembly 131 and a tray jacking assembly 132, and the tray jacking assembly 132 is disposed at the beginning of the tray conveying assembly 131. Preferably, the tray conveying assembly 131 is arranged side by side with the feeding conveying assembly 111. The unloaded charging tray is shifted to the top of charging tray jacking subassembly 132 by charging tray transfer portion 12, and charging tray jacking subassembly 132 receives the unloaded charging tray to drive the unloaded charging tray decline to shift to the top of charging tray conveying subassembly 131, later, charging tray conveying subassembly 131 re-transmission unloaded charging tray removes to the end of self, then is taken away. The structure and the operation principle of the tray conveying assembly 131 and the tray lifting assembly 132 in this embodiment are the same as those of the feeding conveying assembly 111 and the feeding lifting assembly 112, and are not described herein again.

Preferably, the feeding mechanism 1 further comprises a tray clamping portion 14. The tray clamping portion 14 is provided at the loading position of the loading portion 11, and the tray clamping portion 14 clamps a tray on which a product is loaded. Through the setting of charging tray clamping part 14, carry out the centre gripping to the charging tray of material loading jacking subassembly 112 jacking to the material level to keep material loading jacking subassembly 112's jacking state, the cooperation through material loading jacking subassembly 112 and charging tray clamping part 14 makes the charging tray that bears the weight of the product be in the state that stabilizes, and the location of the first transfer mechanism 4 of being convenient for is got the material and is shifted. The tray clamping portion 14 in this embodiment can adopt the cooperation of an air cylinder and a clamping plate, and is not described herein again.

Preferably, each tray in this embodiment forms a stack of two products, and double-station feeding is realized to improve the efficiency of pretreatment feeding.

Still further referring to fig. 1, the first transfer mechanism 4 includes a transfer drive section 41 and a transfer adsorption section 42. The output end of the transfer drive unit 41 is connected to the transfer adsorption unit 42. The transfer adsorption unit 42 adsorbs the product, and the transfer drive unit 41 moves the product adsorbed by the transfer adsorption unit 42. The first transfer mechanism 4 is arranged on one side of the feeding mechanism 1. Specifically, the transfer drive portion 41 is provided on one side of the tray conveying unit 131 and near the beginning of the tray conveying unit 131. The transfer adsorption part 42 is arranged at the tail end of the transfer driving part 41, the transfer driving part 41 drives the transfer adsorption part 42 to move to the feeding position of the feeding mechanism 1, after the transfer adsorption part 42 carries out positioning adsorption on a product, the transfer driving part 41 drives the transfer adsorption part 42 to move to the appearance detection mechanism 2 again to carry out appearance detection. The transfer drive unit 41 in the present embodiment may employ a four-axis or six-axis robot.

With reference to fig. 3 and 4, fig. 3 is a schematic structural diagram of the transfer adsorption part in the present embodiment, and fig. 4 is a schematic structural diagram of another view angle of the transfer adsorption part in the present embodiment. Further, the transfer suction portion 42 includes a suction-bearing portion 421, a suction portion 422, and a relief portion 423. The escape portion 423 is opened in the suction receiving portion 421. The adsorption bearing part 421 is used for bearing a product, the adsorption part 422 is used for adsorbing the product borne by the adsorption bearing part 421, and the avoiding part 423 is used for avoiding a vulnerable part of the product adsorbed by the adsorption part 422. It will be appreciated that some products have a vulnerable portion, for example the carbon paper portion of the membrane electrode in this embodiment. Through the cooperation setting of adsorption part 422 and dodging portion 423 for the vulnerable position of product can be avoided when adsorption part 422 adsorbs firm product, has avoided causing the damage to the vulnerable part of product when having guaranteed product adsorption stability again, guarantees the product quality of follow-up production. Preferably, the suction portion 422 is provided on the suction-holding portion 421, and the suction-holding portion 421 holds the suction portion 422, thereby facilitating the engagement between the suction portion 422 and the escape portion 423.

With continuing reference to fig. 3-5, fig. 5 is a schematic structural diagram of the product in this embodiment. Furthermore, the adsorption bearing part 421 in this embodiment is plate-shaped, so as to be adapted to the shape of the membrane electrode product. Dodge portion 423 and set up on adsorbing load-bearing part 421, the position of seting up that dodging portion 423 was avoided to adsorption portion 422 sets up, and when adsorbing load-bearing part 421 and bear the weight of the product, dodge portion 423 and adsorb the position that easily damages that load-bearing part 421 bore the product just right for adsorption portion 422 avoids the position that easily damages of product, so, adsorption portion 422 is to the absorption of product just can not touch the position that easily damages of product, and then has avoided the damage to the position that easily damages of product, has guaranteed the yields of follow-up production. Preferably, the size and shape of the avoiding portion 423 are adapted to the size and shape of the vulnerable part of the product, in this embodiment, the avoiding portion 423 may be a groove or a through opening opened on the adsorption bearing portion 421, and the shape thereof may be a rectangle adapted to the carbon paper in the middle of the membrane electrode.

Referring to fig. 3 and 4 again, further, the adsorption part 422 has at least one adsorption member 4221, and the adsorption member 4221 is disposed on the adsorption bearing part 421 and distributed around the avoiding part 423. Preferably, the suction member 4221 has a suction cup 42211. The suction cup 42211 is provided on the surface of the suction receiving portion 421. Specifically, the escape portion 423 in the present embodiment has a rectangular through-hole shape, and an air-permeable pipe is arranged inside the adsorption receiving portion 421. The number of the suckers 42211 of the suction member 4221 is plural, the plurality of suckers 42211 are respectively arranged on the lower surface and are respectively communicated with the pipeline inside the suction bearing part 421, and the suckers 42211 are used for performing contact suction on a product. Preferably, the plurality of suction cups 42211 are uniformly distributed on the lower surface of the adsorption bearing part 421 and are arranged around the avoiding part 423, which may be specifically arranged according to the shape of the product and the avoiding part 423, so as to make the adsorption force applied to the product uniform, for example, the plurality of suction cups 42211 are uniformly distributed along the contour of the non-carbon paper of the membrane electrode. The adsorbing member 4221 further includes a vent end 4222, the vent end 4222 is disposed on the upper surface of the adsorption bearing portion 421, one end of the vent end 4222 is communicated with a pipe inside the adsorption bearing portion 421, and the other end of the vent end 4222 is communicated with an external vacuum machine. When the suction cup 42211 is attached to the surface of the product, an external vacuum machine starts to act, so that the air in the ventilation end 4222, the pipeline inside the adsorption bearing part 421 and the suction cup 42211 is exhausted, and the adsorption of the product is completed.

With continued reference to fig. 6, fig. 6 is a schematic structural diagram of an adsorption carrying portion, an adsorption portion, and an escape portion in another embodiment. In this embodiment, the suction cup 42211 is embedded in the suction bearing portion 421. Specifically, the suction cup 42211 is embedded in the suction bearing portion 421 and is communicated with the channel inside the suction bearing portion 421, and the suction end of the suction cup 42211 is exposed on the lower surface of the suction bearing portion 421. Preferably, the absorption member 4221 further comprises a panel 42212, the panel 42212 is disposed on the lower surface of the absorption bearing portion 421, the suction cup 42211 is embedded in the panel 42212 and is communicated with the pipeline inside the absorption bearing portion 421, and the absorption end of the suction cup 42211 is exposed on the surface of the panel 42212. The panel 42212 in this embodiment has a rectangular frame shape, and surrounds the outside of the escape 423. Through the arrangement, when the product is adsorbed by the sucker 42211, the surface of the product can be attached to the surface of the adsorption bearing part 421 or the panel 42212, so that the adsorption stability is improved.

Referring to fig. 3 and 4, the transfer adsorption part further includes a material taking reinforcement part 424, a material taking driving part 425, a material taking supporting part 426, and a material taking positioning part 427. Get material reinforcing part 424 and locate the upper surface that adsorbs bearing part 421, it is used for strengthening adsorbs bearing part 421 intensity, guarantees to bear stably. The reclaiming reinforcement part 424 in this embodiment can adopt two mutually perpendicular reinforcement plates, and the two reinforcement plates are vertically fixed on the upper surface of the adsorption bearing part 421. In a specific application, in order to facilitate the arrangement of the reinforcement portion 424, a supporting transverse plate may be disposed at a position of the suction bearing portion 421 corresponding to the avoiding portion 423, so as to facilitate the fixed support of the reinforcement portion 424. The output end of the material taking driving part 425 is connected with the adsorption bearing part 421. Get material drive portion 425 and drive absorption supporting part 421 and carry out linear movement along the direction of perpendicular to product, and then drive absorption portion 422 linear movement for absorption portion 422 can carry out the displacement for the product, and the adaptation adsorbs the product. Meanwhile, when the product is not required to be adsorbed, the material taking driving part 425 drives the adsorption bearing part 421 and the adsorption part 422 to return, so that interference is avoided. When specifically using, get the output of material drive part 425 and adsorb the material reinforcing part 424 of getting of supporting part 421 upper surface and be connected, get the removal that material reinforcing part 424 drove absorption supporting part 421 through the drive. The reclaiming drive 425 in this embodiment may employ an air cylinder. One end of the material taking support part 426 is connected to the material taking driving part 425. Through getting the setting of material supporting part 426, be convenient for get the material and shift. The take-out support 426 in this embodiment is a bracket structure that is provided at the end of the transfer drive section 41. The material taking positioning part 427 is disposed on the material taking supporting part 426, and the material taking positioning part 427 is used for positioning the product. It can be understood that, in order to avoid the vulnerable part when the adsorption part 422 adsorbs the product, the product needs to be accurately adsorbed to the non-vulnerable part of the product, and the product is positioned by the material-taking positioning part 427, so as to ensure that the adsorption position of the adsorption part 422 is accurate. Preferably, the material taking positioning part 427 comprises a material taking visual positioning part 4271 and a material taking light source part 4272. The material taking visual positioning element 4271 is arranged at one end of the material taking supporting part 426 far away from the material taking driving part 425. The material taking visual positioning piece 4271 is used for visual positioning of products, and the material taking light source piece 4272 is used for providing light sources required by the visual positioning of the material taking visual positioning piece 4271. Preferably, the material taking light source 4272 is provided in the material taking support 426. The positioning end of the material taking visual positioning piece 4271 is positioned through the material taking light source piece 4272. Specifically, the material taking positioning part 427 further comprises a material taking positioning frame 4273. The material taking positioning rack 4273 is arranged at one end of the material taking supporting part 426 far away from the material taking driving part 425. The material taking visual positioning piece 4271 is arranged on the material taking positioning frame 4273, and the material taking light source piece 4272 is positioned right below the material taking visual positioning piece 4271 and is connected with the material taking positioning frame 4273. The middle part of the material taking light source piece 4272 is provided with a through hole (not shown in the figure), the positioning end of the material taking visual positioning piece 4271 is opposite to the through hole of the material taking light source piece 4272, so that when the material taking visual positioning piece 4271 is used for positioning shooting, shooting can be carried out through the through hole of the material taking light source piece 4272, meanwhile, the material taking light source piece 4272 can provide light source light rays around the periphery of the material taking visual positioning piece 4271, the brightness of the periphery of a product is uniform, the shooting quality of the material taking visual positioning piece 4271 is improved, and the accuracy of visual positioning is further. The material taking visual positioning element 4271 in this embodiment may be a CCD camera, and the material taking light source 4272 may be a panel light source. It should be noted that when the material taking positioning part 427 is positioned, the material taking driving part 425 does not drive the adsorption bearing part 421, so that the adsorption bearing part 421 retracts to the position of the material taking light source component 4272, or retracts to the upper side of the material taking light source component 4272, thereby avoiding the interference with the material taking light source component 4272, avoiding the interference to the positioning operation of the material taking positioning part 427, and ensuring the positioning accuracy. After the material taking visual positioning piece 4271 is positioned, the material taking driving part 425 drives the adsorption bearing part 421 to extend out again, so that the product is accurately avoided and adsorbed.

With continuing reference to fig. 1 and 7, fig. 7 is a schematic structural diagram of the appearance inspection mechanism in this embodiment. Further, the appearance inspection mechanism 2 includes a transfer reversing section 21, an appearance inspection carrying section 22, and an appearance inspection section 23. The appearance detection carriage 22 and the appearance detection unit 23 are provided on the transfer path of the transfer reversing unit 21, respectively. The first transfer mechanism 4 transfers the product to the appearance detection bearing portion 22, the appearance detection bearing portion 22 bears the product, then the appearance detection portion 23 performs appearance detection on one surface of the product, the transfer turning portion 21 adsorbs and turns over the product, the appearance detection portion 23 performs appearance detection on the other surface of the turned product, and then the first transfer mechanism 4 transfers the product to the air tightness detection mechanism 3 to perform air tightness detection. So, through the cooperation setting of transferring upset portion 21, outward appearance detection supporting part 22 and outward appearance detection portion 23, realize the continuous detection of product positive and negative, promoted detection efficiency, transfer upset portion 21 simultaneously and in time transfer the product that the detection was accomplished to subsequent process, guaranteed the continuity of product overall production, and then improved the whole production efficiency of product.

Referring to fig. 7 again, the transfer reversing section 21 includes a transfer driving unit 211, a reversing unit 212, and a transfer reversing frame 213. The transfer driving assembly 211 is disposed on the transfer turning frame 213, an output end of the transfer driving assembly 211 is connected to the turning assembly 212, the transfer driving assembly 11 drives the turning assembly 212 to approach or depart from the product carried by the appearance inspection carrying portion 22, and the turning assembly 212 adsorbs and turns the product. The transfer turning frame 213 is disposed at one side of the feeding conveying assembly 111 and adjacent to the end of the feeding conveying assembly 111. The transfer truck 213 has a support plate 2131 at an upper end thereof, and the transfer driving unit 211 is provided on the support plate 2131. Preferably, the transfer driving assembly 211 includes a first transfer driving unit 2111 and a second transfer driving unit 2112. The output end of the first transfer drive 2111 is connected to the second transfer drive 2112, and the output end of the second transfer drive 2112 is connected to the turnover unit 212. Specifically, the first transfer driving unit 2111 is laid on the upper surface of the support plate 2131, the first transfer driving unit 2111 drives the second transfer driving unit 2112 to linearly move along a direction parallel to the support plate 2131, the first transfer driving unit 2111 in this embodiment may adopt a linear module, and the second transfer driving unit 2112 is disposed on a sliding table of the first transfer driving unit 2111. The second transfer driving element 2112 drives the turning assembly 212 to linearly move along a direction perpendicular to the supporting plate 2131, in this embodiment, the second transfer driving element 2112 may adopt a linear module, and the turning assembly 212 is disposed on a sliding table of the second transfer driving element 2112, so that the first transfer driving element 2111 and the second transfer driving element 2112 are matched to realize the linear movement of the turning assembly 212 in the XZ axis direction with two degrees of freedom. Preferably, the flipping assembly 212 includes a flipping driving element 2121 and a flipping adsorbing element 2122. The output end of the flip driving member 2121 is connected to the flip adsorbing member 2122, and the flip driving member 2121 drives the flip adsorbing member 2122 to rotate. The output end of the transfer drive assembly 211 is connected to the inversion drive 2121, and more specifically, the inversion drive 2121 is connected to the output end of the second transfer drive 2112. The turnover adsorbing piece 2122 can adsorb the product stably, and the rotation of the product is realized by the rotation of the turnover driving piece 2121 for the driving of the turnover adsorbing piece 2122, so that the product is turned over. The tilting drive 2121 in this embodiment may be a rotary cylinder provided on a sliding table of the second transfer drive 2112. The flip suction member 2122 includes a flip platform 21221 and a suction member 21222. The suction member 21222 is provided on the inversion platform 21221. Specifically, the adsorbing member 21222 is embedded on the surface of the turning platform 21221, wherein the turning platform 21221 can bear a product, and the adsorbing member 21222 can adsorb the product borne by the turning platform 21221, so that the product is fixed on the turning platform 21221 and cannot move due to the turning of the turning platform 21221. The flipping platform 21221 may take a plate-like configuration. Preferably, an open space 212211 is formed in the middle of the overturning platform 21221, so that the overturning platform 21221 forms an approximate frame shape, and the adsorbing element 21222 is disposed around the space 212211, so that when the adsorbing element 21222 adsorbs, the carbon paper part of the membrane electrode can be avoided, and abrasion to the carbon paper is reduced. The suction member 21222 in this embodiment includes a plurality of suction cups, which are embedded on the surface of the turning platform 21221 and arranged around the clearance 212211. Preferably, the number of the turnover absorbing members 2122 is two, two turnover absorbing members 2122 are arranged side by side, and both of the two turnover absorbing members 2122 arranged side by side are connected to the output end of the turnover driving member 2121. The flip assembly 212 further includes a connecting plate 2123, and both ends of the connecting plate 2123 are respectively connected to the flip platforms 21221 of the two flip adsorbing members 2122, so that the two flip platforms 21221 form a stable side-by-side structure. Through the setting of overturning adsorption member 2122 side by side to in promoting upset efficiency, and then promote detection efficiency.

Referring to fig. 7, the appearance inspection supporting portion 22 further includes a supporting frame 221 and a supporting platform 222. The supporting platform 222 is disposed on the supporting frame 221. Specifically, the supporting frame 221 is disposed at one side of the transferring and overturning frame 213, the supporting platform 222 is a plate-shaped and disposed at the upper end of the supporting frame 221, and the supporting platform 222 is used for supporting a product. Preferably, the supporting platform 222 is provided with a supporting groove adapted to the product, and of course, the supporting platform 222 may also be in other shapes for conveniently supporting the product, for example, a frame plate for supporting the membrane electrode, and this is not limited here.

Referring to fig. 7 again, the appearance detecting unit 23 includes an appearance detecting frame 231 and an appearance detecting unit 232. The appearance detecting unit 232 is disposed on the appearance detecting frame 231, and a detecting end of the appearance detecting unit 232 faces the product carried by the appearance detecting carrier 22. Specifically, the appearance inspecting stand 231 is disposed at the other side of the transferring and overturning stand 213 and faces the supporting stand 221. The appearance detecting assembly 232 is disposed at the upper end of the appearance detecting frame 231. Preferably, the appearance inspection bracket 231 includes an appearance inspection support 2311 and an appearance inspection adjustment bracket 2312. The one end and the outward appearance that outward appearance detected alignment jig 2312 detected support frame 2311 can dismantle and be connected, and its other end is connected with outward appearance detection subassembly 232. Through adjusting the installation position of outward appearance detection alignment jig 2312 in outward appearance detection support frame 2311, and then adjust the position of outward appearance detection subassembly 232 for the product that loading platform 222 bore to outward appearance detection subassembly 232 can obtain better detection effect. The appearance detection support 2311 in this embodiment is an aluminum frame, and is provided with an adjusting groove 23111 along the height direction of the aluminum frame; the outward appearance detects alignment jig 2312 is frame construction, and the one end sliding connection of outward appearance detection alignment jig 2312 is in adjustment groove 23111 to can be fixed in adjustment groove 23111 by similar mounting such as screw, make outward appearance detection alignment jig 2312 and outward appearance detection support frame 2311 form detachable and be connected, after the position of adjusting outward appearance detection alignment jig 2312, set screw can. The other end of the visual inspection adjustment bracket 2312 extends directly above the load-bearing platform 222 to facilitate the positioning of the visual inspection assembly 232. Preferably, the appearance detecting component 232 includes an appearance detecting element 2321 and an appearance detecting light source element 2322. The detection end of the appearance detection member 2321 and the light source end of the appearance detection light source member 2322 face the product carried by the appearance detection carrying part 22. The appearance detecting element 2321 is used for detecting a product, and the appearance detecting light source element 2322 is used for providing a light source required for detecting the appearance detecting element 2321. Specifically, the appearance detecting piece 2321 is disposed at one end of the appearance detecting adjusting frame 2312 away from the appearance detecting supporting frame 2311. The appearance detecting member 2321 is located right above the carrying platform 222, and the detecting end of the appearance detecting member faces the product carried by the carrying platform 222. The appearance detecting part 2321 in this embodiment may adopt a CCD camera, which photographs a product to be detected so as to perform appearance detection of the product, for example, the photographed photograph is transmitted to a display screen for display, and whether the appearance of the product is qualified is determined manually. The appearance detection light source 2322 is arranged at one end of the appearance detection adjusting frame 2312, which is far away from the appearance detection supporting frame 2311, a through hole is formed in the middle position of the appearance detection light source, and the detection end of the appearance detection light source 2321 is just opposite to a product borne by the bearing platform 222 through the through hole. So, when outward appearance detection piece 2321 sees through this opening and detects the time of shooing, outward appearance detection light source 2322 can provide light source light around the product for the luminance around the product is even, has promoted outward appearance detection piece 2321's shooting quality, and then has promoted the detection accuracy. The appearance detection light source 2322 in this embodiment may adopt a plate-shaped light source. The appearance of the product is detected by the appearance detecting piece 2321, so that the quality of the subsequent production product is facilitated, and the yield can be improved. The products adsorbed by the first transfer mechanism 4 are transferred to the carrying platform 222, and the appearance detection piece 2321 performs appearance detection on the front surfaces of the products; after the front detection of the product is completed, the first transfer driving element 2111 and the second transfer driving element 2112 cooperate to drive the turnover adsorbing element 2122 to approach the product and adsorb the product on the front side; then, the second transfer driving element 2112 drives the turnover adsorbing element 2122 to rise for a certain distance, the turnover driving element 2121 drives the turnover adsorbing element 2122 to rotate for 180 degrees, and the appearance detecting element 2321 performs appearance detection on the back side of the product; after the reverse side detection of the product is completed, the first transfer driving element 2111 and the second transfer driving element 2112 cooperate to drive the turnover adsorbing element 2122 to be away from the bearing platform 222, so as to drive the qualified product to be detected to be away from the bearing platform 222, so that the first transfer mechanism 4 transfers the product to the air tightness detection mechanism 3, and the continuity of the production process is ensured; meanwhile, the first transfer mechanism 4 can continuously adsorb the next product to be detected and transfer the next product to the bearing platform 222 for front appearance detection, so that the continuity of front and back detection of the product is ensured, the front detection of the product is carried out while the product is transferred, and the detection efficiency is improved. Preferably, a buffer transfer station (not shown) for detecting defective products is disposed at a side of the appearance inspection mechanism 2, for example, a conveyor belt, onto which the detected defective products are transferred and buffered. Of course, in a specific application, when the product is transferred to the air-tightness detecting mechanism 3, the product after completion of detection by the appearance detecting mechanism 2 close to itself may be transferred by the second transferring mechanism 5.

With continuing reference to fig. 1 and 8, fig. 8 is a schematic structural view of the air-tightness detecting mechanism in the present embodiment. Further, the air-tightness detecting mechanism 3 includes an air-tightness detecting carrier 31, an air-tightness detecting nip 32, and an air-tightness detecting portion 33. The product is carried in the position that bears of airtight detection bearing part 31, and airtight detection nip portion 32 carries out the pressfitting to the product that bears the position, and airtight detection portion 33 carries out the gas tightness to the product after the pressfitting and detects. Preferably, the air tightness detecting carrier 31 has a lower mold 311, the air tightness detecting pressing part 32 has an upper mold 321, the lower mold 311 is matched with the upper mold 321, and the two are matched to press the product, so as to form a sealed space for the air tightness detecting part 33 to perform air tightness detection. The product is sealed in the molding space formed by the lower mold 311 and the upper mold 321, and the airtightness detecting unit 33 communicates with the molding space to detect the airtightness of the product in the sealed molding space.

Specifically, the air tightness detection mechanism 3 is arranged on one side of the first transfer mechanism 4, which is far away from the feeding mechanism 1, and is adjacent to the appearance detection mechanism 2. The airtight testing carrier 31 further includes an airtight testing frame 312. The airtightness detection frame 312 is adjacent to the transfer drive section 41. The upper end of the air-tightness detecting frame 312 is provided with a frame plate 3121, and the lower mold 311 is provided on the surface of the frame plate 3121. Air-tightness detecting portion 33 is provided in air-tightness detecting frame 312 and located below frame plate 3121.

The air tightness detecting press-fit portion 32 further includes a press-fit driving portion 322 and a press-fit bracket 323. The pressing support 323 is disposed at the upper end of the airtight testing frame 312, the pressing driving part 322 is disposed at the pressing support 323, and an output end of the pressing driving part 322 is connected to the upper mold 321. The upper mold member 321 faces the lower mold member 311, and the pressing driving part 322 drives the upper mold member 321 to linearly move in a direction perpendicular to the lower mold member 311, so that the upper mold member 321 and the lower mold member 311 are in a molding state. The air tightness detecting part 33 communicates with the inside of the lower mold 311, and when the upper mold 321 and the lower mold 311 cooperate to form a molding space, the air tightness detecting part 33 communicates with the molding space, and the air tightness detecting part 33 in this embodiment may be an air tightness tester. The stitching driving part 322 in this embodiment may be an electric cylinder. Preferably, the airtight detection press-fit part 32 further includes a pressure sensing member 324, and the output end of the press-fit driving part 322 has an output rod 3221, and the end of the output rod 3221 acts on the surface of the upper mold part 321 through the pressure sensing member 324, so that the driving pressure applied by the press-fit driving part 322 is sensed through the arrangement of the pressure sensing member 324, so as to facilitate the pressure control of the press-fit driving part 322 and avoid over-molding. The pressure sensor 324 in this embodiment may be a pressure sensor. Preferably, the airtightness detection pressing portion 32 further includes a pressing guide 325, the pressing guide 325 is used for guiding the driving of the output rod 3221, one end of the pressing guide 325 is connected to the upper mold 321, the other end thereof is connected to the pressing driving portion 322, and the pressing guide 325 is parallel to the output rod 3221. Preferably, the stitching guide 325 is provided in plurality, and a plurality of stitching guides 325 are provided around the output rod 3221. The pressing guide 325 in this embodiment is a combination of a guide post and a guide sleeve, and is not described herein again.

With continuing reference to fig. 8, 9 and 10, fig. 9 is a schematic view of the structure of the lower mold part in this embodiment, and fig. 10 is a schematic view of the nitrogen leakage direction in the product airtightness test in this embodiment. Further, the lower mold 311 includes a lower mold plate 3111, a detection hole 3112, and a vent hole 3113. A sealing groove 31111 is formed on a surface of the lower mold plate 3111, and the sealing groove 31111 in this embodiment is a rectangular groove. Preferably, a plurality of dividing groove strips 31112 are arranged in the sealing groove 31111, each dividing groove strip 31112 is laid on the bottom wall of the sealing groove 31111 along the width direction of the sealing groove 31111, and two ends of each dividing groove strip 31112 are respectively opposite to two long edges of the sealing groove 31111, the dividing groove strips 31112 are sequentially arranged at intervals along the length direction of the sealing groove 31111, so that the sealing groove 31111 is divided into a plurality of small strip-shaped groove structures, which is convenient for bearing products, and a space for gas to flow is formed below the products. Detection hole 3112 is seted up in the tank bottom wall of seal groove 31111 to be located between two adjacent parting bead strips 31112, and air vent 3113 is seted up in the lateral wall of lower bolster 3111, and air vent 3113 and detection hole 3112 communicate, and is concrete, and the pipeline of laying of air vent 3113 accessible lower bolster 3111 communicates. The vent hole 3113 communicates with the airtightness detector 33, and the airtightness detector 33 itself has a function of filling nitrogen gas so that the nitrogen gas can enter the seal groove 31111 through the vent hole 3113, the inner pipe of the lower plate 3111, and the detection hole 3112. Preferably, the lower mold 311 further includes a gasket 3114, the gasket 3114 is used for sealing the lower mold 311 and the upper mold 321 after the molds are closed, the gasket 3114 is laid on the surface of the lower mold plate 3111 and surrounds the sealing groove 31111, the gasket 3114 in this embodiment is rectangular frame-shaped, and the hollow rectangular through opening inside the gasket 3114 is matched with the size and shape of the sealing groove 31111. Preferably, the lower mold 311 further includes a positioning pin 3115, the positioning pin 3115 is used for accurate positioning when the lower mold 311 and the upper mold 321 are clamped together, and the positioning pin 3115 in this embodiment is disposed on the surface of the lower mold plate 31111 and outside the gasket 3114. The upper mold part 321 is provided with a groove corresponding to the sealing groove 31111, a positioning hole corresponding to the positioning pin 3114 is provided at a position of the upper mold part 321 corresponding to the positioning pin 3115 of the lower mold part 311, the positioning pin is matched with the positioning hole to realize accurate mold closing of the upper mold part 321 and the lower mold part 311, and after mold closing, the groove of the upper mold part 321 is opposite to the sealing groove 31111 of the lower mold part 311. As shown in fig. 10, the direction of the arrows in the figure is the flow direction of the nitrogen gas as it leaks past the product. When the airtightness of the product is detected, the product is placed in the sealing groove 31111 of the lower mold 311, the pressing drive portion 322 drives the upper mold 321 to move toward the lower mold 311, so that the upper mold 321 and the lower mold 311 are in a molding state, the product is in a molding space formed by the upper mold 321 and the lower mold 311, and the sealing state of the molding space is maintained by the sealing gasket 3114, at this time, the product is carried on the partition bar 31112 and separates the molding space into an upper space and a lower space, the lower part of the molding space is communicated with the airtightness detection portion 33 through the lower mold 311, and the upper part of the molding space is sealed by the product and the upper mold 321. Then, nitrogen gas is filled into the lower part of the molding space, the leak detection function of the airtightness detection section 33 is in a closed state when gas is supplied, the nitrogen gas filling function of the airtightness detection section 33 is closed and the leak detection function is opened when the lower part of the molding space is filled with nitrogen gas, and then the airtightness detection section 33 performs gas leak detection according to the change in the flow rate of nitrogen gas in the lower part of the molding space, for example, when the nitrogen gas content in the lower part of the molding space becomes small, it is indicated that nitrogen gas leaks to the upper part of the molding space through the product, and it is determined whether the product is an airtight product, for example, it is determined as a defective product when the leak amount exceeds 0.2sccm as required.

The number of the air tightness detection mechanisms 3 in the embodiment is two, the two air tightness detection mechanisms 3 are arranged oppositely, one air tightness detection mechanism 3 is adjacent to the first transfer mechanism 4, the other air tightness detection mechanism 3 is adjacent to the appearance detection mechanism 2 close to the feeding mechanism 1, and the other appearance detection mechanism 2 is located between the two air tightness detection mechanisms 3. Two gas tightness detection mechanism 3 can carry out the gas tightness in turn to two products and detect, and two gas tightness detection mechanism 3 just to the overall arrangement that sets up, can be convenient for first transfer mechanism 4's transfer actuate, avoid actuating to first transfer mechanism 4's transfer and cause the interference, also be convenient for save the overall arrangement space.

Referring back to fig. 1, further, the second transfer mechanism 5 is disposed on a side of the air tightness detecting mechanism 3 away from the first detecting mechanism 4, and the blanking mechanism 6 is disposed on a side of the second transfer mechanism 5 away from the air tightness detecting mechanism 3. Preferably, the second transfer mechanism 5 may be disposed close to a position between the two airtightness detection mechanisms 3 so as to facilitate the transfer of the product after the detection of the two airtightness detection mechanisms 3 is completed. Of course, it is also convenient for the second transfer mechanism 5 to perform the task of transferring the appearance detection mechanism 2 between the two airtightness detection mechanisms 3. The buffer mechanism 7 is respectively adjacent to the blanking mechanism 6 and the second transfer mechanism 5, and preferably, the buffer mechanism 7 is also adjacent to the air tightness detection mechanism 3. And the air tightness detection mechanism 3 transfers the detected product through the second transfer mechanism 5, if the air tightness detection of the product is qualified, the product is transferred to the blanking mechanism 6 by the second transfer mechanism 5 for blanking, otherwise, the product is transferred to the caching mechanism 7 by the second transfer mechanism 5 for subsequent processing. In this embodiment, the structure and the actuation principle of the second transfer mechanism 5 are consistent with those of the first transfer mechanism 4, the structure and the actuation principle of the blanking mechanism 6 are consistent with those of the feeding mechanism 1, and the buffer mechanism 7 may adopt a conveyor belt mechanism, which is not described herein again.

With continued reference to fig. 11, fig. 11 is a schematic structural diagram of a pretreatment device in another embodiment. The difference in this embodiment is that, in the specific arrangement, the first transfer mechanism 4 is disposed on one side of the feeding conveyor assembly 111 and close to the end of the feeding conveyor assembly 111. The two air-tightness detection mechanisms 3 are arranged side by side and close to the beginning of the tray conveying assembly 131. The appearance detection mechanism 2 is arranged on one side, away from the feeding mechanism 1, of the first transfer mechanism 4. The second transfer mechanism 5 is arranged on one side of the air tightness detection mechanism 3 far away from the feeding mechanism 1. Through the layout arrangement, the pretreatment process can be smoothly carried out.

In conclusion, the pretreatment device in the embodiment realizes automatic feeding, appearance detection, air tightness detection and qualified product discharging of the membrane electrode, the whole process is smooth, qualified membrane electrode products are provided for subsequent production, and the production yield is ensured.

The above is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The pretreatment device is characterized by comprising a feeding mechanism (1), an appearance detection mechanism (2), an air tightness detection mechanism (3) and a first transfer mechanism (4); the feeding mechanism (1), the appearance detection mechanism (2) and the air tightness detection mechanism (3) are respectively arranged on a transfer path of the first transfer mechanism (4); the feeding mechanism (1) is used for feeding products, the first transfer mechanism (4) transfers the products after feeding to the appearance detection mechanism (2) for appearance detection, and transfers the products after appearance detection to the air tightness detection mechanism (3) for air tightness detection.

2. The pretreatment device according to claim 1, further comprising a second transfer mechanism (5) and a blanking mechanism (6); the second transfer mechanism (5) transfers the product after the air tightness detection is completed to the blanking mechanism (6), and the blanking mechanism (6) carries out blanking on the product qualified in detection.

3. The preprocessing apparatus according to claim 2, characterized in that it further comprises a caching mechanism (7); the buffer memory mechanism (7) is arranged on a transfer path of the second transfer mechanism (5), and the buffer memory mechanism (7) is used for detecting unqualified buffer memory blanking of the product.

4. The pretreatment device according to any one of claims 1 to 3, wherein the feeding mechanism (1) comprises a feeding part (11), a tray transfer part (12) and a tray discharging part (13); the feeding part (11) and the material tray discharging part (13) are sequentially arranged on a transfer path of the material tray transfer part (12); the feeding part (11) is used for feeding a material tray loaded with the product, and the material tray transfer part (12) transfers the unloaded material tray to the material tray discharging part (13) for discharging.

5. The pretreatment device according to claim 4, wherein the feeding mechanism (1) further comprises a tray holding portion (14); the material tray clamping part (14) is arranged at the material loading position of the material loading part (11), and the material tray clamping part (14) clamps the material tray loaded with the product.

6. The pretreatment apparatus according to any one of claims 1 to 3, wherein the appearance inspection mechanism (2) comprises a transfer reversing section (21), an appearance inspection carrying section (22), and an appearance inspection section (23); the appearance detection bearing part (22) and the appearance detection part (23) are respectively arranged on a conveying path of the conveying overturning part (21); the appearance detection bearing part (22) is used for bearing the product, the appearance detection part (23) is used for detecting the appearance of one surface of the product, the transfer overturning part (21) adsorbs and overturns the product, and the appearance detection part (23) is used for detecting the appearance of the other surface of the overturned product.

7. The pretreatment device according to any one of claims 1 to 3, wherein the airtightness detection mechanism (3) comprises an airtightness detection carrying section (31), an airtightness detection nip section (32), and an airtightness detection section (33); the product is borne on a bearing position of the airtight detection bearing part (31), the airtight detection pressing part (32) presses the product on the bearing position, and the airtight detection part (33) detects the airtightness of the pressed product.

8. The pretreatment device according to claim 7, wherein the airtightness detection carrying section (31) has a lower mold (311), and the airtightness detection nip (32) has an upper mold (321); the lower die piece (311) is matched with the upper die piece (321), and the lower die piece and the upper die piece are matched to perform die pressing on the product to form a sealed space for the air tightness detection part (33) to perform air tightness detection.

9. The pretreatment device according to any one of claims 1 to 3, wherein the first transfer mechanism (4) comprises a transfer drive section (41) and a transfer adsorption section (42); the output end of the transfer driving part (41) is connected with the transfer adsorption part (42); the product is adsorbed by the transfer adsorption part (42), and the product adsorbed by the transfer adsorption part (42) is driven to be transferred by the transfer driving part (41).

10. The pretreatment device according to claim 9, wherein the transfer adsorption portion (42) includes an adsorption carrying portion (421), an adsorption portion (422), and an escape portion (423); the avoiding part (423) is arranged on the adsorption bearing part (421); the adsorption bearing part (421) is used for bearing the product, the adsorption part (422) is used for adsorbing the product borne by the adsorption bearing part (421), and the avoidance part (423) is used for avoiding the vulnerable part of the product adsorbed by the adsorption part (422).