Sand core production line

Abstract

The application provides a sand core production line, which comprises a charging system, a conveying device and a core taking system. The charging system comprises a first transfer structure and a supporting structure. The first transfer structure is used for transferring sand cores to the supporting structure. The conveying device comprises a conveying structure, a bearing structure and a third transfer structure. The bearing structure is provided with a plurality of mounting portions which are matched with the sand cores. The third transfer structure is reversibly arranged and used for overturning the sand cores and transferring the overturned sand cores to the bearing structure. The conveying structure is movably arranged to carry the bearing structure. The core taking system comprises a second transfer structure which is movably arranged and used for taking away the sand cores on the bearing structure. The technical scheme provided by the application can solve the technical problem of low efficiency of manually carrying sand cores in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cylinder block core production, in particular to a sand core production line. BACKGROUND

[0002] At present, in the production and manufacturing process of a cylinder block, a sand core is usually used to form the inner cavity, hole and part of the outer shape of the casting which cannot be sand cast. The sand core is usually made of foundry sand, resin and some additives in a certain proportion to form a solid structure with a special shape. In actual production and manufacturing process, after the sand core is manufactured and discharged from the kiln, it needs to be transferred to the next production step by carrying.

[0003] However, in the existing sand core carrying process, manual sand core carrying operation is usually adopted. This will result in low core placing efficiency and cannot meet the efficiency requirement. SUMMARY

[0004] The main purpose of the present application is to provide a sand core production line to solve the technical problem of low efficiency of manual sand core carrying in the prior art.

[0005] In order to achieve the above purpose, the present application provides a sand core production line, comprising:

[0006] A charging system comprising a first transfer structure and a support structure, the first transfer structure being used to transfer the sand core to the support structure;

[0007] A conveying device comprising a conveying structure, a bearing structure and a third transfer structure, the bearing structure being provided with a plurality of mounting portions, the mounting portions being matched with the sand core, the third transfer structure being reversibly arranged, the third transfer structure being used to reverse the sand core and transfer the reversed sand core to the bearing structure, the conveying structure being movably arranged to carry the bearing structure;

[0008] A core placing system comprising a second transfer structure, the second transfer structure being movably arranged, the second transfer structure being used to take away the sand core on the bearing structure.

[0009] Further, the charging system further comprises:

[0010] A first levelness detection member arranged on the first transfer structure, the first levelness detection member being used to detect the levelness of the discharge tray carrying the sand core;

[0011] A first image acquisition member arranged on the first transfer structure, the first image acquisition member being used to acquire the image of the sand core on the discharge tray;

[0012] A first image recognition module is connected with the first image acquisition device, and is configured to determine whether the quality of the sand core is qualified according to the image of the sand core.

[0013] A first control module is connected with the first level detection device, the first image recognition module and the first transfer structure. When the first level detection device detects that the level of the furnace-out tray is qualified and the first image recognition module determines that the quality of the sand core is qualified, the first control module controls the first transfer structure to move to the furnace-out tray and transfer the sand core on the furnace-out tray.

[0014] Further, the first image recognition module is further configured to determine the type of the sand core according to the image of the sand core, and the first control module acquires a clamping force suitable for the type of the sand core according to the type of the sand core and controls the first transfer structure to clamp the sand core with the clamping force suitable for the type of the sand core.

[0015] Further, the support structure has an avoiding gap, the first transfer structure is configured to transfer the sand core to the support structure through above the avoiding gap and make at least part of the sand core located at the avoiding gap, the third transfer structure moves to the avoiding gap through below the avoiding gap and clamps the sand core, and the third transfer structure flips and transfers the sand core.

[0016] Further, the sand core system further comprises:

[0017] A second image acquisition device is arranged on the second transfer structure, and is configured to acquire the image of the sand core.

[0018] A second image recognition module is connected with the second image acquisition device, and is configured to determine the type of the sand core according to the image of the sand core.

[0019] A second control module is connected with the second image recognition module and the second transfer structure, and is configured to control the clamping force of the second transfer structure according to the type of the sand core.

[0020] Further, the sand core system further comprises a position detection device, which is configured to detect the position of the sand core and the position of the sand box on the bearing structure, and is connected with the second control module. The second control module controls the second transfer structure to clamp the sand core and transfer the sand core to the sand box according to the position information detected by the position detection device; and / or,

[0021] The lower core system further comprises a second levelness detection member arranged on the second transfer structure, the second levelness detection member being used for detecting the levelness of the sand core on the bearing structure; a transfer part of the second transfer structure is rotatably arranged, the transfer part is connected with the sand core, and the second control module controls the transfer part of the second transfer structure to perform attitude adjustment according to the deviation of the levelness of the sand core, so as to adjust the deviation of the levelness of the sand core within a qualified range.

[0022] Further, the first transfer structure and / or the second transfer structure is a transfer device, the transfer device comprising:

[0023] a driving arm, the driving arm being movably arranged;

[0024] at least two spaced-apart clamp assemblies, one of the at least two clamp assemblies being adapted to the first sand core, and another of the at least two clamp assemblies being adapted to the second sand core;

[0025] wherein the driving arm has a first clamping position and a second clamping position; when the driving arm is in the first clamping position, one of the at least two clamp assemblies is arranged opposite to the first sand core; when the driving arm is in the second clamping position, another of the at least two clamp assemblies is arranged opposite to the second sand core.

[0026] Further, each of the clamp assemblies comprises a connecting frame and a plurality of clamping members, the plurality of clamping members being detachably arranged on the connecting frame.

[0027] Further, the clamp assembly further comprises:

[0028] a first clamping member arranged on the connecting frame, the first clamping member comprising at least two movably arranged first clamping arms, the at least two first clamping arms being movable towards or away from each other;

[0029] wherein the first clamping member has at least two oppositely arranged first abutting portions, the at least two first abutting portions being respectively connected with the at least two first clamping arms, the first abutting portions having first contact surfaces in contact with the sand core, the first abutting portions being made of elastic or flexible material, so that the cross-sectional shape of the first contact surfaces is adjustably arranged according to the surface shape of the sand core; and / or,

[0030] the first clamping member has at least two oppositely arranged second abutting portions, the at least two second abutting portions being respectively connected with the at least two first clamping arms, the second abutting portions having clamping grooves, the clamping grooves being adapted to the sand core.

[0031] Further, the clamp assembly comprises:

[0032] A second clamping piece is arranged on the connecting frame, the second clamping piece is arranged protruding from the connecting frame, and a tensioning part is arranged at one end of the second clamping piece away from the connecting frame, the cross-sectional dimension of the tensioning part is adjustably arranged to be in interference fit with the matching hole of the sand core.

[0033] Further, the clamp assembly further comprises:

[0034] A pressing assembly is arranged on the connecting frame, the pressing assembly comprises a pressing piece and a driving piece in driving connection, the driving piece movably drives the pressing piece to move in the direction close to or away from the sand core, and the pressing piece has a third abutting part at one end away from the connecting frame, and the third abutting part abuts against the sand core.

[0035] Further, at least two clamp assemblies are arranged on the connecting frame at a preset angle, and the connecting frame is rotatably arranged to make one of the at least two clamp assemblies opposite to the conveying device.

[0036] Further, the third transfer structure comprises a carrying arm and a carrying frame in driving connection, and the carrying frame is matched with the bearing structure; wherein, along the circumference of the carrying frame, a plurality of locking pieces and positioning pieces are arranged on the carrying frame, the positioning pieces are arranged protruding from the carrying frame, one end of the positioning pieces away from the carrying frame is matched with the to-be-positioned part of the bearing structure; the locking pieces have movably arranged clamping parts, the clamping parts are matched with and oppositely arranged to the to-be-matched part of the bearing structure; and / or,

[0037] The support structure is arranged at the side of the first transfer structure, and a plurality of supporting frames are arranged on the support structure, and each supporting frame is used to be matched with the sand core.

[0038] By the cooperation of the feeding system, the conveying device and the core lowering system, the sand core can be automatically lowered, the degree of automation is high, the efficiency is high, and large-scale automatic production is realized. In addition, the sand core production line can also realize safer operation of the sand core, improve the operation precision, and avoid the risk of manual misplacement of the sand core. BRIEF DESCRIPTION OF DRAWINGS

[0039] The drawings accompanying the specification of this application form a part hereof, serve to provide further understanding of the application, and together with the description of the application provided below, explain the application. In the drawings:

[0040] Figure 1 Fig. 1 shows a structure schematic view of a clamp assembly provided according to an embodiment of the present application;

[0041] Figure 2 FIG. 7 shows a structural schematic diagram of another clamp assembly provided according to an embodiment of the present application;

[0042] Figure 3 FIG. 8 shows a structural schematic diagram of yet another clamp assembly provided according to an embodiment of the present application;

[0043] Figure 4 FIG. 9 shows a structural schematic diagram of a core lowering system provided according to an embodiment of the present application;

[0044] Figure 5 FIG. 10 shows a structural schematic diagram of a transport device provided according to an embodiment of the present application;

[0045] Figure 6 FIG. 11 shows a structural schematic diagram of a handling frame provided according to an embodiment of the present application;

[0046] Figure 7 FIG. 12 shows a top structural schematic diagram of a bearing structure provided according to an embodiment of the present application;

[0047] Figure 8 FIG. 13 shows a structural schematic diagram of a plurality of bearing structures stacked together provided according to an embodiment of the present application;

[0048] Figure 9 FIG. 14 shows a structural schematic diagram of a support structure provided according to an embodiment of the present application;

[0049] Figure 10 FIG. 15 shows an operational flowchart of a loading system provided according to an embodiment of the present application;

[0050] Figure 11 FIG. 16 shows a core lowering flowchart of a core lowering system provided according to an embodiment of the present application.

[0051] Among the above figures, the following reference signs are included:

[0052] 10, driving arm;

[0053] 20, clamp assembly; 21, connecting frame; 22, first clamping member; 221, first clamping arm; 222, first abutting portion; 223, second abutting portion; 23, second clamping member; 24, pressing assembly; 241, pressing member; 242, driving member;

[0054] 30, loading system; 31, first transfer structure; 32, support structure; 321, support frame;

[0055] 40, core lowering system; 41, second transfer structure;

[0056] 50. Transport device; 51. Carrying structure; 511. Mounting portion; 52. Third transport structure; 521. Transport arm; 522. Transport frame; 5221. Locking member; 5222. Positioning member;

[0057] 60. Surface drying furnace conveying mechanism; 70. Surface drying furnace. DETAILED DESCRIPTION

[0058] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0059] like Figures 1 to 9 As shown, an embodiment of the present invention provides a sand core production line, which includes: a loading system 30, a transport device 50, and a core setting system 40. The loading system 30 includes a first transfer structure 31 and a support structure 32. The first transfer structure 31 is used to transfer sand cores to the support structure 32. The transport device 50 includes a transport structure, a supporting structure 51, and a third transfer structure 52. The supporting structure 51 is provided with multiple mounting portions 511, which are adapted to fit the sand cores. The third transfer structure 52 is reversible and is used to flip the sand cores and transfer the flipped sand cores to the supporting structure 51. The transport structure is movably provided to transport the supporting structure 51. The core setting system 40 includes a second transfer structure 41. The second transfer structure 41 is movably provided and is used to remove the sand cores from the supporting structure 51.

[0060] The sand core production line provided by the embodiments of the present invention automatically performs sand core unloading operations through the coordination of the loading system 30, the transport device 50, and the core setting system 40. This achieves a high degree of automation and efficiency, enabling large-scale automated production. Furthermore, the sand core production line also enables safer sand core handling, improves operational precision, and avoids the risk of manually placing incorrect sand cores.

[0061] Specifically, there may be multiple supporting structures 51, and multiple supporting structures 51 may be stacked. Specifically, the supporting structure 51 may be a supporting pallet. The transport structure may be a transfer vehicle, specifically an AGV. The transfer vehicle can be used to move along a predetermined route between the kiln discharge area where the loading system 30 is located and the core setting area where the core setting system 40 is located. The stacked supporting structures can be formed into a "flat warehouse" to effectively store sand cores and implement a first-in, first-out system.

[0062] In the embodiment, the charging system 30 further comprises: a first level detection member arranged on the first transfer structure 31, the first level detection member being configured to detect the level of the discharge tray carrying the sand core; a first image acquisition member arranged on the first transfer structure 31, the first image acquisition member being configured to acquire an image of the sand core on the discharge tray; a first image recognition module connected with the first image acquisition member, the first image recognition module being configured to determine whether the quality of the sand core is qualified according to the image of the sand core; and a first control module connected with the first level detection member, the first image recognition module and the first transfer structure 31; when the first level detection member detects that the level of the discharge tray is qualified and the first image recognition module determines that the quality of the sand core is qualified, the first control module controls the first transfer structure 31 to move to the discharge tray and transfer the sand core on the discharge tray. In this way, the operation precision in the sand core transfer process can be improved.

[0063] Specifically, the discharge tray is conveyed by the surface drying furnace conveying mechanism 60, and the surface drying furnace conveying mechanism 60 is configured to convey the sand core flowing out of the surface drying furnace 70.

[0064] Specifically, the first image recognition module is further configured to determine the type of the sand core according to the image of the sand core, and the first control module acquires a clamping force suitable for the type of the sand core according to the type of the sand core and controls the first transfer structure 31 to clamp the sand core with the clamping force suitable for the type of the sand core. With such a configuration, the precision of the clamping force of the first transfer structure 31 can be controlled to better adapt the first transfer structure 31 to the sand core, so as to avoid the situation that the sand core falls off the first transfer structure 31 due to the clamping force of the first transfer structure 31 being too small, and also avoid the situation that the sand core is cracked or damaged due to the clamping force of the first transfer structure 31 being too large.

[0065] Specifically, the clamping force mainly refers to the size of the clamping force.

[0066] Specifically, the first control module controls the cylinder of the first transfer mechanism to clamp the sand core with the clamping force suitable for the type of the sand core.

[0067] In the embodiment, the support structure 32 has an avoiding gap, the first transfer structure 31 is configured to transfer the sand core to the support structure 32 through the upper part of the avoiding gap and make at least part of the sand core located at the avoiding gap, the third transfer structure 52 moves to the avoiding gap through the lower part of the avoiding gap and clamps the sand core, and the third transfer structure 52 is configured to flip and transfer the sand core. In this way, the sand core can be flipped and transferred smoothly to adjust the sand core to a suitable state.

[0068] Specifically, after the first transfer structure 31 transfers the sand core to the support structure 32, the sand core is supported above the support structure 32, a part of the sand core is in contact with the support structure 32, and another part of the sand core is above the part of the sand core; when the third transfer structure 52 moves below the avoidance gap to the avoidance gap and clamps the sand and then flips the sand core, it will make the part of the sand core above the other part of the sand core, thereby achieving the flipping of the sand core.

[0069] Specifically, the core setting system 40 further comprises: a second image acquisition element arranged on the second transfer structure 41, the second image acquisition element being configured to acquire an image of the sand core; a second image recognition module connected with the second image acquisition element, the second image recognition module being configured to determine the type of the sand core according to the image of the sand core; and a second control module, the second image recognition module and the second transfer structure 41 being connected with the second control module, the second control module being configured to control the clamping force of the second transfer structure 41 according to the type of the sand core. In this way, the clamping force can be adjusted according to the type of the sand core, so that the second transfer structure 41 is better adapted to the sand core, avoiding the sand core from falling off the second transfer structure 41 due to the clamping force being too small, and avoiding the sand core from being cracked or damaged due to the clamping force being too large.

[0070] Specifically, the core setting system 40 further comprises a position detection element configured to detect the position of the sand core on the bearing structure 51 and the position of the sand box, the position detection element being connected with the second control module, the second control module being configured to control the second transfer structure 41 to clamp and transfer the sand core to the sand box according to the position information detected by the position detection element. With such a configuration, the transfer position accuracy of the second transfer structure 41 can be improved, so that the sand core can be accurately clamped and transferred to the sand box.

[0071] Specifically, the core setting system 40 further comprises a second levelness detection element arranged on the second transfer structure 41, the second levelness detection element being configured to detect the levelness of the sand core on the bearing structure 51; the transfer part of the second transfer structure 41 is rotatably arranged, the transfer part being connected with the sand core, and the second control module is configured to control the second transfer structure 41 to adjust the posture of the transfer part of the second transfer structure 41 according to the deviation of the levelness of the sand core, so as to adjust the deviation of the levelness of the sand core within an acceptable range. With such a structure, the levelness of the sand core can be detected, and the deviation of the levelness of the sand core can be adjusted within an acceptable range, thereby improving the clamping accuracy of the sand core.

[0072] Specifically, as shown in FIG. 1, the core setting system 40 further comprises a first image acquisition element arranged on the first transfer structure 31, the first image acquisition element being configured to acquire an image of the sand core; a first image recognition module connected with the first image acquisition element, the first image recognition module being configured to determine the type of the sand core according to the image of the sand core; and a first control module, the first image recognition module and the first transfer structure 31 being connected with the first control module, the first control module being configured to control the clamping force of the first transfer structure 31 according to the type of the sand core. In this way, the clamping force can be adjusted according to the type of the sand core, so that the first transfer structure 31 is better adapted to the sand core, avoiding the sand core from falling off the first transfer structure 31 due to the clamping force being too small, and avoiding the sand core from being cracked or damaged due to the clamping force being too large. Figure 10The operation flow chart of the loading system 30 is shown. The track line tray output signal gives the kiln robot, the kiln robot rotates to the tray, the species is identified and the tray is horizontally positioned by camera shooting and laser ranging, after determining the eligibility, the robot is guided to select the appropriate core taking force according to different core species, and the sand core is placed on the turnover frame in turn, the sand core is taken from the turnover frame, and the sand core is placed on the special tray.

[0073] As shown in Figure 11 The core loading flow chart of the core loading system 40 is shown. The specific process is: the tray group is separated by the clamp of the third transfer structure 52, the bearing tray with two sets of sand cores is placed on the conveying line, and is transported to the direction of the core loading robot (corresponding to the core loading system 40). The core loading robot takes a photo to determine the core species, and matches the current model. The PLC controls the cylinder to determine the direction of the core according to the visual recognition result, and clamps different types of cores as required. The seat core clamped by the first clamping piece and the water channel core clamped by the second clamping piece are placed in the cavity in sequence, and finally the small round hole core is placed by the pressing assembly. The part number is called to complete the core loading operation by identifying the core loading parameters through shooting. After the core loading is completed, the laser ranging confirms the balance state of the sand core, and the posture of the sand core is corrected according to the ranging result.

[0074] The core loading process is performed by the core loading robot. In order to meet different process requirements, an additional loading system is added. The cold iron sleeve is supplied by the feeding system, and the second clamping piece is used to take it. After the core loading action is completed, the position of the additional material of the core is confirmed by shooting, different placement parameters are called according to the different additional materials, and after the loading is completed, the additional material is placed in place again. The load head can be changed to a sleeve, a profiled rubber sleeve, an electromagnet, etc. according to the requirements. After the core loading is completed, the empty bearing tray is transported by the conveying line, returned to the tray handling robot (corresponding to the third transfer structure 52), placed on the sand core transfer station by the tray handling robot, and transported to the flat warehouse by the AGV transfer trolley after the required number of stacks is reached. Complete the core loading cycle.

[0075] Specifically, the first transfer structure 31 and / or the second transfer structure 41 is a transfer device. Please refer to Figures 1 to 3 In the first embodiment of the present application, a transfer device is provided, which comprises a driving arm 10 and at least two spaced-apart clamp assemblies 20. The driving arm 10 is movably arranged, one of the at least two clamp assemblies 20 is adapted to the first to-be-transported member, and the other of the at least two clamp assemblies 20 is adapted to the second to-be-transported member. Wherein, the driving arm 10 has a first clamping position and a second clamping position; when the driving arm 10 is in the first clamping position, one of the at least two clamp assemblies 20 is arranged opposite to the first to-be-transported member; when the driving arm 10 is in the second clamping position, the other of the at least two clamp assemblies 20 is arranged opposite to the second to-be-transported member.

[0076] With such an arrangement, in the present embodiment, one of the at least two clamp assemblies 20 is adapted to the first to-be-transported object, and the other is adapted to the second to-be-transported object, so that when the driving arm 10 is switched between the first clamping position and the second clamping position to make one of the at least two clamp assemblies 20 or the other of the at least two clamp assemblies 20 face the to-be-transported object, the requirement for transporting different to-be-transported objects can be met, thereby replacing the manual transporting operation in the prior art with mechanical switching, so that the situation of manually misplacing the core (corresponding to the to-be-transported object) can be effectively avoided, and thus the technical problem of low accuracy of manual transporting of the core in the prior art is solved.

[0077] In the present embodiment, each clamp assembly 20 includes a connecting frame 21 and a plurality of clamping pieces, which are detachably arranged on the connecting frame 21. With such an arrangement, by the switchable plurality of clamping pieces, different combinations of clamping pieces can be selected according to the structure of the actual core and the clamping position to better adapt to the core, thereby facilitating the transporting of the core by the clamp assembly 20.

[0078] Specifically, the clamp assembly 20 further includes a first clamping piece 22 arranged on the connecting frame 21, and the first clamping piece 22 includes at least two first clamping arms 221 arranged movably, and the at least two first clamping arms 221 can move towards or away from each other. With such an arrangement, the stability of clamping the core can be improved by the at least two first clamping arms 221.

[0079] Among them, the first clamping piece 22 has at least two first abutting portions 222 arranged oppositely, and the at least two first abutting portions 222 are respectively connected with the at least two first clamping arms 221, and the first abutting portion 222 has a first contact surface in contact with the to-be-transported object, and the first abutting portion 222 is made of elastic or flexible material, so that the cross-sectional shape of the first contact surface is adjustably arranged according to the surface shape of the to-be-transported object. With such an arrangement, the first clamping piece 22 can better fit the surface of the core by the first abutting portion 222 with adjustable shape, thereby improving the stability of the first clamping piece 22 when clamping the core.

[0080] Alternatively, the first clamping piece 22 has at least two second abutting portions 223 arranged oppositely, and the at least two second abutting portions 223 are respectively connected with the at least two first clamping arms 221, and the second abutting portion 223 has a clamping groove adapted to the to-be-transported object. With such an arrangement, the core can be clamped by the clamping groove, which can enhance the clamping effect of the first clamping piece 22 to a certain extent while ensuring the strength of the first clamping piece 22.

[0081] Alternatively, the first abutting portion 222 and the second abutting portion 223 can be provided on the first clamping member 22 simultaneously. It should be noted that this embodiment can be understood as that the first abutting portion 222 and the second abutting portion 223 are respectively provided on the at least two clamp assemblies 20 which are spaced apart. With such a setting, a more suitable structure of the abutting portion can be adaptively set according to the actual use of the different clamp assemblies 20, so as to further improve the clamping effect of the first clamping member 22.

[0082] In the present embodiment, the clamp assembly 20 comprises a second clamping member 23, the second clamping member 23 is provided on the connecting frame 21, the second clamping member 23 is provided protruding from the connecting frame 21, and the end of the second clamping member 23 away from the connecting frame 21 is provided with a bulging portion, the cross-sectional size of the bulging portion is adjustably set to be in interference fit with the matching hole of the workpiece. With such a setting, when the hole structure of the sand core is clamped, the bulging portion with adjustable cross-sectional size is inserted into the hole structure and increased in size to be in interference fit with the matching hole of the workpiece, so that the sand core can be more stably arranged on the second clamping member 23, thereby improving the stability of the clamp assembly 20 when clamping the sand core.

[0083] Specifically, the clamp assembly 20 further comprises a pressing assembly 24, the pressing assembly 24 is provided on the connecting frame 21, the pressing assembly 24 comprises a pressing member 241 and a driving member 242 connected in driving manner, the driving member 242 drives the pressing member 241 to be movably arranged in the direction of approaching or moving away from the workpiece, and the end of the pressing member 241 away from the connecting frame 21 is provided with a third abutting portion, the third abutting portion abuts against the workpiece. With such a setting, the friction between the sand core and the clamp assembly 20 can be increased by the way that the pressing member 241 presses on the sand core, so that the sand core is more stably clamped on the clamp assembly 20; and the sand core can be better entered into the cavity by the pressing assembly 24 applying pressure on the sand core when the sand core is discharged.

[0084] In the present embodiment, the at least two clamp assemblies 20 are arranged at a preset angle on the connecting frame 21, and the connecting frame 21 is rotatably arranged to make one of the at least two clamp assemblies 20 opposite to the conveying device 50. With such a setting, the switching of the clamping of different sand core structures by the clamp assembly 20 can be more convenient, so that the conveying of the sand core by the conveying device can be more convenient. It should be noted that the preset angle is preferably 90° or 180°.

[0085] As Figures 4 to 7In a second embodiment of the present invention, a production line is provided. The production line includes a loading system 30 and a core setting system 40, which are sequentially arranged. The loading system 30 includes a first transfer structure 31, and the core setting system 40 includes a second transfer structure 41. The first transfer structure 31 is used for loading sand cores in the loading system 30, and the second transfer structure 41 is used for setting cores in the core setting system 40. The first transfer structure 31 is the transfer device provided in the first embodiment; alternatively, the second transfer structure 41 is the transfer device provided in the first embodiment. Alternatively, both the first transfer structure 31 and the second transfer structure 41 are the transfer devices provided in the first embodiment.

[0086] In one implementation of this embodiment, the first transfer structure 31 is the transfer device provided in Example 1, such as Figure 1 As shown, three groups of clamp assemblies 20 arranged at an angle are provided on the first transfer structure 31. In combination with the sand core structure, the clamping position is different. When clamping the sand core hole structure, the second clamping member 23 provided with a tensioning portion is selected for clamping; when clamping the sand core cylindrical core head structure, the first clamping member 22 provided with a second abutting portion 223 can be selected, and the circular inner side and the two sides are opened and closed for clamping; for clamping irregular curved surfaces, a first abutting portion 222 whose shape can be adjusted to the sand core can be provided on the first clamping member 22, and the inner side can be opened and closed to clamp according to the shape; in order to stabilize the balance of the sand core, a pressing assembly 24 can be selected on the surface of the sand core. The specific setting can select a variety of chuck combinations according to the structure of the sand core and the clamping position, so as to clamp different sand cores.

[0087] In another embodiment of this embodiment, the second transfer structure 41 is the transfer device provided in the first embodiment, such as Figure 2 As shown, the second transfer structure 41 is equipped with two sets of clamp assemblies 20 arranged at an angle. The control cylinder uses multiple sets of different first clamping members 22 to clamp the seat core and water channel sand core respectively. The clamped seat core and water channel sand core are placed in the mold cavity to be formed in a predetermined order. Each clamping assembly 24 applies a downward force of 30 Newtons to ensure that the core is placed in place. Finally, a small round hole core is placed by a single set of first clamping members 22 and pressed into place by the clamping assembly 24 with a force of 10 Newtons.

[0088] In another embodiment of this embodiment, the second transfer structure 41 is the transfer device provided in the first embodiment, such as Figure 3 As shown, the second transfer structure 41 is equipped with two sets of clamp assemblies 20 arranged at an angle. A control cylinder uses multiple sets of different first clamping members 22 to clamp the water channel core and the chiller. The movement of the second transfer structure 41 sequentially places the water channel core and the chiller into place, where they are then compressed by the compression assembly 24.

[0089] In the embodiment, the production line further comprises a conveying device 50, which comprises a conveying structure movably arranged between the charging system 30 and the core placing system 40, and a plurality of bearing structures 51; the conveying structure comprises a carrying part adapted to the bearing structures 51 to carry the bearing structures 51; the bearing structures 51 are provided with a plurality of mounting parts 511 adapted to the to-be-mounted parts of the to-be-conveyed pieces to mount the to-be-conveyed pieces on the bearing structures 51. It should be noted that the carrying structure can be an AGV trolley, and the bearing structure 51 can be a tray. With such an arrangement, a plurality of sand cores can be fixed through the plurality of mounting parts 511 on the bearing structures 51, and in actual application, by laying a reflection barrel in the production site and using a forklift AGV transfer vehicle to run between the charging system 30 and the core placing system 40 according to the set route, the storage and first-in-first-out of the sand cores can be effectively realized, and the sand cores can be stably supplied according to the predetermined frequency.

[0090] Specifically, the first transfer structure 31 clamps the sand cores in sequence by means of the clamp assembly 20 and places them on the bearing structures 51. In order to save space and improve efficiency, the tray design can store the structure of two groups of sand cores and can be customized for stacking. The tray loaded with sand cores is transported to the next station through the roller line, stopped by the mechanical structure, and then transferred to the manual station. The manual station places other sand cores that need to be transported together on the tray, and after repairing the sand core coating layer and installing other auxiliary materials, the tray is pushed to the next station.

[0091] In the embodiment, the conveying device 50 further comprises a third transfer structure 52, which comprises a drivingly connected carrying arm 521 and a carrying frame 522 cooperating with the bearing structures 51. Among them, along the circumference of the carrying frame 522, a plurality of locking members 5221 and positioning members 5222 are arranged on the carrying frame 522, the positioning members 5222 are arranged protruding from the carrying frame 522, and the ends of the positioning members 5222 away from the carrying frame 522 are adapted to the to-be-positioned parts of the bearing structures 51; the locking members 5221 have movably arranged clamping parts, and the locking parts are adapted to and oppositely arranged with the to-be-cooperating parts of the bearing structures 51. With such an arrangement, after the tray passes through the manual station, the third transfer structure 52 stacks the trays full of sand cores to the corresponding positions by means of the carrying frame 522, realizing the stacking of a plurality of trays. The third transfer structure 52 separates the stacked empty trays in the placing area by means of the carrying frame 522, takes out one tray, and transfers it to the conveying line to go to the core placing station of the core placing system 40.

[0092] Specifically, the core lowering system 40 in the embodiment includes at least two second transfer structures 41, and the working steps of the core lowering system 40 include: separating the tray group by the third transfer structure 52, placing the tray with two sets of sand cores on the conveying line, and transporting to the at least two second transfer structures 41, and then controlling the air cylinders by the second transfer structures 41 and clamping different sand cores by the clamp assemblies 20.

[0093] In the embodiment, the charging system 30 further includes a support structure 32 arranged at the side of the first transfer structure 31, and a plurality of supporting frames 321 are arranged on the support structure 32 and matched with the to-be-transported objects. With such an arrangement, the supporting frames 321 can temporarily store the sand cores, and in operation, one set of two adjacent clamp assemblies 20 first clamps the sand cores and places them on the corresponding positions of the supporting frames 321, and then another set of two adjacent clamp assemblies 20 clamps the sand cores and places them on the tray. Since the first transfer structure 31 is provided with three sets of clamp assemblies 20 arranged at an angle, the position relationship between the clamp assemblies 20 can be used to adjust the direction and position of the sand cores, avoiding manual rotation and turning of the sand cores, thereby improving the production efficiency of the sand cores. The sand core production line of the present application involves various control parameters such as visual recognition system adjustment, sand core and sand mold recognition, mechanical hand clamping force adjustment, and operation speed adjustment. The production efficiency can reach 50 pieces per hour under the condition of 5 sand cores, and the production efficiency can be further improved if the number of sand cores is reduced or combined.

[0094] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects: The driving arm 10 drives the clamp assembly 20 to move, and at least two clamp assemblies 20 clamp different sand cores to transfer the corresponding sand cores to a specific position of the tray, which can ensure that the sand cores are batched, stable and accurately transferred during the transfer process, thereby avoiding damage to the sand cores caused by manual handling, and further solving the technical problem of low accuracy of manual handling of sand cores in the prior art. Through the high-precision visual recognition system at the kiln outlet position, the transfer of the sand cores from the roller to the tray is realized, and through the locking of the positioning mechanism, the batched and stable transfer of the sand cores during the transfer process is ensured, thereby avoiding damage to the sand cores. By using the AVG trolley for transfer, the supply can be stable at a predetermined frequency. By using the designed positioning mechanism to split the tray, the positioning system and the high-precision visual recognition system are used to complete the precise core lowering action. With the whole process parameter adjustment, multiple benefits of quality and efficiency are achieved. The core lowering operation is completed with high precision; the use of high-precision recognition avoids the wrong use of sand cores or the production of wrong part numbers; and the production efficiency requirement is met.

[0095] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0096] The relative arrangement of components and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale of the various parts shown in the drawings. Techniques, methods, and apparatus known to those of ordinary skill are not discussed in detail because they would be understood that the techniques, methods, and apparatus are to be considered part of the specification. In all examples shown and discussed herein, any specific value is to be interpreted as illustrative only and not as a limitation. Thus, other examples of the example embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the disclosure, and thus, once an item is defined in one figure, it is not necessary to discuss it further in connection with other figures unless explicitly stated to do so.

[0097] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by orientation words such as "front, back, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without the opposite indication, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application. The orientation words "inner, outer" refer to the inner and outer relative to the contour of the components themselves.

[0098] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical" and "horizontal" as can be perceived herein relative to the accompanying drawings refer to the orientation of the components being described. However, it is to be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device described herein relative to the other device or structure is inverted, then a spatially relative term such as "above" can be interpreted as meaning "below" or "below" can be interpreted as meaning "above". The device can also be oriented in other ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0099] In addition, it should be pointed out that the use of "first", "second" and the like words to define parts, only for the convenience of the corresponding parts to be distinguished, as no further declaration, the above words have no special meaning, therefore can not be understood as limiting the scope of the present application.

[0100] The preferred embodiments of the present application have been described above with the aid of drawing only and are not limited to those preferred embodiments, and as those skilled in the art will readily appreciate, changes and modification can be made thereto without departing from the spirit and scope of the present application. Any further modifications, changes, improvements, and the like that come within the spirit and scope of the present application should be secured to the application.

Claims

1. A sand core production line, characterized in that, The sand core production line comprises: a charging system (30) comprising a first transfer structure (31) and a support structure (32), the support structure (32) having an avoiding gap, the first transfer structure (31) being used for transferring the sand core over the avoiding gap to the support structure (32) and placing at least part of the sand core at the avoiding gap; a conveying device (50) comprising a conveying structure, a bearing structure (51) provided with a plurality of mounting portions (511) matched with the sand core, and a third transfer structure (52) reversibly arranged, the third transfer structure (52) moving to the avoiding gap through the lower part of the avoiding gap and clamping the sand core; the third transfer structure (52) being used for overturning the sand core and transferring the overturned sand core to the bearing structure (51), and the conveying structure being movably arranged to carry the bearing structure (51); a core lowering system (40) comprising a second transfer structure (41) movably arranged, the second transfer structure (41) being used for taking away the sand core on the bearing structure (51); a first level detection member, a first image acquisition member, a first image recognition module, and a first control module, when the first level detection member detects that the level of the discharge tray is qualified and the first image recognition module determines that the quality of the sand core is qualified, the first control module controls the first transfer structure (31) to move to the discharge tray and transfer the sand core on the discharge tray, the first image recognition module is used for determining the type of the sand core according to the image of the sand core, the first control module acquires the clamping force matched with the type of the sand core according to the type of the sand core, and controls the first transfer structure (31) to clamp the sand core with the clamping force matched with the type of the sand core.

2. The sand core production line according to claim 1, wherein the first level detection member is arranged on the first transfer structure (31) and is used for detecting the level of the discharge tray bearing the sand core; the first image acquisition member is arranged on the first transfer structure (31) and is used for acquiring the image of the sand core on the discharge tray; the first image recognition module is connected with the first image acquisition member and is further used for determining whether the quality of the sand core is qualified according to the image of the sand core; the first control module is connected with the first level detection member, the first image recognition module, and the first transfer structure (31).

3. A sand core production line according to claim 1, characterized in that The core lowering system (40) further comprises: a second image acquisition member arranged on the second transfer structure (41) and used for acquiring the image of the sand core; A second image recognition module is connected with the second image acquisition device, and is configured to determine the type of the sand core according to the image of the sand core; A second control module is connected with the second image recognition module and the second transfer structure (41), and is configured to control the clamping force of the second transfer structure (41) according to the type of the sand core.

4. The sand core production line according to claim 3, characterized in that, The core setting system (40) further comprises a position detection device configured to detect the position of the sand core and the position of the sand box on the bearing structure (51), the position detection device is connected with the second control module, and the second control module controls the second transfer structure (41) to clamp and transfer the sand core to the sand box according to the position information detected by the position detection device; and / or The core setting system (40) further comprises a second levelness detection device arranged on the second transfer structure (41), the second levelness detection device is configured to detect the levelness of the sand core on the bearing structure (51), and the transfer part of the second transfer structure (41) is rotatably arranged, the transfer part is connected with the sand core, and the second control module controls the second transfer structure (41) to adjust the posture of the transfer part of the second transfer structure (41) according to the deviation of the levelness of the sand core, so that the deviation of the levelness of the sand core is adjusted within a qualified range.

5. A sand core production line according to any one of claims 1 to 4, characterized in that, The first transfer structure (31) and / or the second transfer structure (41) is a transfer device, and the transfer device comprises: A driving arm (10) movably arranged; At least two spaced-apart clamp assemblies (20), one of the at least two clamp assemblies (20) is adapted to the first sand core, and the other of the at least two clamp assemblies (20) is adapted to the second sand core; Wherein, the driving arm (10) has a first clamping position and a second clamping position; when the driving arm (10) is in the first clamping position, one of the at least two clamp assemblies (20) is arranged opposite to the first sand core; when the driving arm (10) is in the second clamping position, the other of the at least two clamp assemblies (20) is arranged opposite to the second sand core; Each of the clamp assemblies (20) comprises a connecting frame (21) and a plurality of clamping members, and the plurality of clamping members are detachably arranged on the connecting frame (21).

6. A sand core production line according to claim 5, characterized in that The clamp assembly (20) further comprises: A first clamping member (22) arranged on the connecting frame (21), the first clamping member (22) comprises at least two first clamping arms (221) movably arranged, and the at least two first clamping arms (221) can move towards or away from each other; The first clamping piece (22) has at least two oppositely arranged first abutting portions (222), and the at least two first abutting portions (222) are connected with the at least two first clamping arms (221) respectively. The first abutting portion (222) has a first contact surface in contact with the sand core. The first abutting portion (222) is made of elastic or flexible material, so that the cross-sectional shape of the first contact surface is adjustably arranged according to the surface shape of the sand core; and / or, The first clamping piece (22) has at least two oppositely arranged second abutting portions (223), and the at least two second abutting portions (223) are connected with the at least two first clamping arms (221) respectively. The second abutting portion (223) has a clamping groove matched with the sand core.

7. A sand core production line according to claim 5, characterized in that The clamp assembly (20) further comprises: The second clamping piece (23) is arranged on the connecting frame (21), and the second clamping piece (23) protrudes from the connecting frame (21). An end of the second clamping piece (23) away from the connecting frame (21) is provided with a tensioning portion. The cross-sectional size of the tensioning portion is adjustably arranged to be in interference fit with the matching hole of the sand core; and / or, The pressing assembly (24) is arranged on the connecting frame (21). The pressing assembly (24) comprises a pressing member (241) and a driving member (242) connected in a driving manner. The driving member (242) drives the pressing member (241) to be movably arranged in the direction of approaching or moving away from the sand core. An end of the pressing member (241) away from the connecting frame (21) has a third abutting portion in abutment with the sand core; and / or, The at least two clamp assemblies (20) are arranged at a preset angle on the connecting frame (21). The connecting frame (21) is rotatably arranged so that one of the at least two clamp assemblies (20) is opposite to the conveying device (50).

8. The sand core production line according to any one of claims 1 to 4, characterized in that, The third transfer structure (52) comprises a carrying arm (521) and a carrying frame (522) connected in a driving manner. The carrying frame (522) is matched with the bearing structure (51). Along the circumference of the carrying frame (522), a plurality of locking members (5221) and positioning members (5222) are arranged on the carrying frame (522). The positioning members (5222) protrude from the carrying frame (522). An end of the positioning members (5222) away from the carrying frame (522) is matched with the to-be-positioned portion of the bearing structure (51). The locking members (5221) have movably arranged clamping portions matched with and oppositely arranged to the to-be-matched portion of the bearing structure (51); and / or, The support structure (32) is arranged on the side of the first transfer structure (31). A plurality of supporting frames (321) are arranged on the support structure (32). Each supporting frame (321) is used to be matched with the sand core.

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