Automatic mold changing device and mold changing method for refrigerator foaming

Abstract

The invention provides an automatic mold changing device and method for refrigerator foaming, the automatic mold changing device comprises a mold changing track, a mold changing trolley and a mold clamp device, the mold clamp device comprises a device frame, and a mold transverse moving assembly for driving a mold to move close to a mold changing side or a production side is arranged in the device frame; the die changing track and the die changing trolley are located on the die changing side, and a new die placing station and an old die placing station are arranged in the die changing trolley. The die changing trolley is arranged on the die changing track and can be driven to linearly reciprocate in the track extending direction of the die changing track so that one of the new die placing station and the old die placing station can be aligned with a first conveying opening, close to the die changing side, of the die transverse moving assembly. The die replacement efficiency and difficulty can be remarkably reduced, the die replacement time is greatly shortened, the die replacement difficulty is reduced, the labor cost is saved, and the hidden danger of manual die replacement is completely eradicated.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of refrigerator production equipment design, and particularly relates to an automatic mold changing device and method for refrigerator foaming. BACKGROUND

[0002] In the production process of refrigerator foaming, usually one refrigerator mold corresponds to one refrigerator model. If the refrigerator model needs to be changed, the mold needs to be changed. The traditional processing method is to use manual replacement operation. This manual replacement method has problems such as long mold replacement time, difficult mold replacement positioning, and simultaneous operation of multiple people, and manual mold replacement has certain danger. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to provide an automatic mold changing device and method for refrigerator foaming, which can overcome the technical problems of long mold replacement time, difficult operation, high labor cost, and high danger of manual mold replacement in the prior art.

[0004] In order to solve the above problems, the present application provides an automatic mold changing device for refrigerator foaming, which comprises a mold changing track, a mold changing trolley and a mold clamp device. The mold clamp device comprises a device frame, and the device frame has a mold transverse moving assembly for driving the mold to move close to the mold changing side or the production side. The mold changing track and the mold changing trolley are located on the mold changing side. The mold changing trolley has a new mold placing station and an old mold placing station. The mold changing trolley is placed on the mold changing track and can be driven to move linearly along the track extension direction of the mold changing track to align one of the new mold placing station and the old mold placing station with a first conveying port close to the mold changing side.

[0005] In some embodiments, the mold changing trolley comprises a trolley frame, and a plurality of first rollers and second rollers are arranged in parallel and at intervals in the areas corresponding to the new mold placing station and the old mold placing station, respectively. The trolley frame is further provided with a first roller driving device for driving the first rollers to rotate synchronously and a second roller driving device for driving the second rollers to rotate synchronously. The first roller driving device and the second roller driving device are independently controlled. In addition, the mold changing trolley further comprises a transfer roller line, which is located between the mold changing trolley and the first conveying port, and a second conveying port on the side of the transfer roller line close to the mold clamp device is aligned with the first conveying port.

[0006] In some embodiments, the trolley frame is further provided with a walking driving device and a plurality of first rollers on the bottom surface of the trolley frame, the mold changing track comprises a track frame, the track has two tracks arranged in parallel and spaced apart on the track frame, each first roller is supported and rolled on the top surface of each track, the track frame is further provided with a rack arranged along the extension direction of the track, and a driving gear on the output shaft of the walking driving device is engaged with the rack; and / or, the second conveying port is provided with an auxiliary support roller protruding towards the side close to the mold clamp device.

[0007] In some embodiments, the bottom surface of the trolley frame is further provided with a plurality of first guide wheels, each first guide wheel is arranged on the two sides of the track to form an anti-derailing structure with part of the first rollers.

[0008] In some embodiments, the device frame further comprises a mold lifting device capable of driving the mold to lift, the mold lifting device comprises a lifting frame base, a tray assembly is placed on the lifting frame base, the mold is detachably positioned on the top surface of the tray assembly, the mold transverse moving assembly is assembled on the device frame, the mold transverse moving assembly comprises two inner frame conveying assemblies arranged in parallel and spaced apart on the two sides of the tray assembly, the mold lifting device has a mold changing position and a molding position, and during the process that the mold lifting device is lowered from the molding position to the mold changing position, the bottom end surface of the mold can be supported on the conveying top surfaces of the two inner frame conveying assemblies.

[0009] In some embodiments, the tray assembly comprises a main plate and a lower mold locking mechanism on the main plate, the lower mold locking mechanism comprises a lower locking plate, a lower locking mold joint, a lower sliding plate and a lower driving cylinder, the lower locking plate is assembled on the top surface of the main plate, the lower driving cylinder and the lower sliding plate are arranged on the side of the lower locking plate close to the main plate, each lower locking mold joint is arranged in parallel and spaced apart on the lower sliding plate and protrudes from the side of the lower locking plate close to the mold, and the lower driving cylinder is used to drive the lower sliding plate to move transversely to switch the position of each lower locking mold joint, thereby achieving the unlocking or locking of the bottom end surface of the mold.

[0010] In some embodiments, the lower locking plate is provided with a lower positioning pin capable of being connected with the bottom end face pin of the mold, and / or the main plate is provided with a plurality of second guide wheels on both sides parallel to the conveying direction of the mold; and / or the main plate is provided with a first baffle at one end close to the production side, which is used to prevent the tray assembly from moving towards the mold changing side; and / or the lower locking plate is provided with a second baffle at one end close to the production side, which is used to prevent the mold on the lower locking plate from moving towards the production side; and / or the main plate is provided with a gas-liquid-electric plug-in connector module at one end close to the production side, which can be driven to ascend and descend to be connected with or pulled out of the gas-liquid-electric plug-in connector on the bottom end face of the mold.

[0011] In some embodiments, each of the frame-in conveying assemblies is further provided with a guide assembly on the side away from the tray assembly, the guide assembly comprising a guide support, a plurality of third guide wheels spaced along the conveying direction of the frame-in conveying assembly, and a lifting drive cylinder for driving the guide support to ascend and descend, each of the third guide wheels in each of the guide assemblies on both sides can roll in contact with the side wall of the mold when the guide assembly is in the raised position, and each of the third guide wheels in each of the guide assemblies on both sides is out of contact with the side wall of the mold when the guide assembly is in the lowered position as the mold is driven to move towards the production side.

[0012] In some embodiments, the device frame comprises a top frame provided with an upper mold locking mechanism for locking the top end face of the mold.

[0013] The application also provides a mold changing method using the automatic mold changing device, comprising the following steps:

[0014] After the mold changing instruction is obtained, the mold changing trolley is controlled to move to the new mold feeding station to place the new mold on the new mold placing station, the old mold in the mold clamp device is simultaneously controlled to be unloaded, and the mold transverse moving assembly is controlled to operate to convey the unloaded old mold towards the mold changing side until the old mold is placed on the old mold placing station of the mold changing trolley;

[0015] After the new mold placing station of the mold changing trolley is controlled to move to a position aligned with the first conveying port, the mold changing trolley is operated to convey the new mold at the new mold placing station into the mold clamp device, and the new mold is locked after being conveyed to the target position by the mold transverse moving assembly.

[0016] In some embodiments, the old mold in the mold clamp device is unloaded, specifically comprising:

[0017] When the automatic mold changing device includes a lower mold locking mechanism, an upper mold locking mechanism, a mold lifting device, and a guide assembly, the lower mold locking mechanism and the upper mold locking mechanism are controlled to lock the old mold, and then the mold lifting device is controlled to descend to the mold changing position so that the old mold is supported on the conveying top surfaces of the conveying assemblies in the two frames, and the guide assembly is controlled to be in a raised position until the old mold is out of contact with the conveying top surfaces of the conveying assemblies in the frames and the new mold is conveyed to the target position, and then the guide assembly is controlled to be in a lowered position.

[0018] The present invention provides an automatic mold changing device and mold changing method for refrigerator foaming. The mold changing trolley is equipped with a new mold placement station and an old mold placement station at the same time. The automatic loading of the new mold and the automatic unloading of the old mold are realized by switching the position of the mold changing trolley on the mold changing track. The efficiency and difficulty of mold replacement can be significantly reduced, the mold changing time and difficulty can be greatly reduced, labor costs can be saved, and the dangerous hidden dangers of manual mold replacement can be eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the three-dimensional structure of the automatic mold changing device for refrigerator foaming in an embodiment of the present invention at one viewing angle;

[0020] Figure 2 yes Figure 1 A top view of the automatic mold changing device for refrigerator foaming from another perspective;

[0021] Figure 3 yes Figure 1 A front view of an automatic mold changing device for refrigerator foaming;

[0022] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;

[0023] Figure 5 yes Figure 1 Schematic diagram of the three-dimensional structure of the mold changing trolley;

[0024] Figure 6 yes Figure 1 Schematic diagram of the three-dimensional structure of the transfer roller line;

[0025] Figure 7 yes Figure 1 A front view of the mold fixture device in FIG (the mold is shown in the figure);

[0026] Figure 8 yes Figure 7 Schematic diagram of the three-dimensional structure of the mold traverse assembly (including the base frame);

[0027] Figure 9is a top view of Figure 8

[0028] Figure 10 is a perspective view of the tray assembly in Figure 7

[0029] Figure 11 is a perspective view of the lower mold locking mechanism in Figure 10

[0030] Figure 12 is a side view of Figure 11

[0031] Figure 13 is a perspective view of the upper mold locking mechanism in Figure 7

[0032] Figure 14 is a perspective view of the upper mold locking mechanism in Figure 7

[0033] Figure 15 is a side view of Figure 14

[0034] The reference signs are indicated as:

[0035] ​​​​​​​1, die changing track; 11, track; 12, track frame; 13, rack; 2, die changing trolley; 21, trolley frame; 221, first roller; 222, second roller; 231, first roller driving device; 232, second roller driving device; 24, running driving device; 241, driving gear; 25, first roller; 26, first guide wheel; 27, electrical box; 28, first guide plate; 3, die clamp device; 31, device frame; 311, top frame; 312, upper die locking mechanism; 3121, upper locking plate; 3122, upper die joint; 3123, upper slide plate; 3124, upper pressing plate; 3125, upper driving cylinder; 3126, upper positioning pin; 313, bottom frame; 32, die horizontal moving assembly; 321, frame inner conveying assembly; 3211, conveying support; 3212, supporting roller; 3221, guide support; 3222, third guide wheel; 3223, lifting driving cylinder; 3224, linear guide rail; 323, roller rotation driving device; 324, transmission shaft; 325, transmission chain; 33, die lifting device; 331, lifting frame base; 332, tray assembly; 3321, main body plate; 3322, lower locking plate; 3323, lower die joint; 3324, lower slide plate; 33241, lower pressing plate; 3325, lower driving cylinder; 3326, lower positioning pin; 3327, second guide wheel; 3328, second baffle; 3329, first baffle; 333, gas-liquid-electric plug-in joint module; 334, joint module lifting cylinder; 4, transfer roller line; 41, auxiliary supporting roller; 42, third roller; 43, third roller driving device; 44, roller line support; 441, second guide plate; 100, die; 201, new die placement station; 202, old die placement station. DETAILED DESCRIPTION

[0036] BRIEF DESCRIPTION OF DRAWINGS Figures 1 to 15 As shown in the drawings, according to the embodiment of the present application, an automatic die changing device for refrigerator foaming is provided, which comprises a die changing track 1, a die changing trolley 2 and a die clamp device 3. The die clamp device 3 comprises a device frame 31, which has a die horizontal moving assembly 32 for driving a die 100 (for refrigerator foaming forming) to move close to a die changing side or a production side (as shown in the drawings). Figure 1 The die changing track 1 and the die changing trolley 2 are located at the die changing side. The die changing trolley 2 has a new die placement station 201 and an old die placement station 202. The die changing trolley 2 is placed on the die changing track 1 and can be driven to move linearly back and forth along the extension direction of the track 11 of the die changing track 1 to realize the alignment of one of the new die placement station 201 and the old die placement station 202 with a first conveying port (not marked in the drawings) close to the die changing side of the die horizontal moving assembly 32.

[0037] In this technical solution, the mold changing trolley 2 is equipped with a new mold placement station 201 and an old mold placement station 202. By switching the position of the mold changing trolley 2 on the mold changing track 1, automatic loading of the new mold and automatic unloading of the old mold can be realized, which can significantly reduce the efficiency and difficulty of mold replacement, greatly reduce the mold changing time and difficulty, save labor costs and eliminate the dangerous hidden dangers of manual mold replacement.

[0038] In some embodiments, the mold changing trolley 2 includes a trolley frame 21, and the areas corresponding to the trolley frame 21 and the new mold placement station 201 and the old mold placement station 202 are respectively provided with multiple first rollers 221 and second rollers 222 arranged in parallel and spaced apart. The trolley frame 21 is also provided with a first roller driving device 231 for driving each of the first rollers 221 to rotate synchronously and a second roller driving device 232 for driving each of the second rollers 222 to rotate synchronously. The first roller driving device 231 and the second roller driving device 232 are independently controlled, so that the independent drive control of the aforementioned first rollers 221 and second rollers 222 can save energy and reduce consumption.

[0039] In some embodiments, the automatic mold changing device further comprises a transfer roller line 4, which is located between the mold changing trolley 2 and the first conveying port, and the second conveying port of the transfer roller line 4 close to the mold clamping device 3 is aligned with the first conveying port. In this way, the transfer of the removed old mold by the transfer roller line 4 can reduce the waiting time for the replacement of the old mold with the new one and improve the efficiency of the mold replacement operation. Figure 6 As shown, the transfer roller line 4 includes a roller line support 44, on which are mounted a plurality of third rollers 42 spaced apart along the conveying direction of the mold 100, and a third roller driving device 43 for driving the third rollers 42 to rotate synchronously. Second guide plates 441 are provided on opposite sides of the roller line support 44 to guide the mold 100 on both sides of the third rollers 42. The third roller driving device 43 can specifically be a rotary motor equipped with a reducer.

[0040] See further Figure 6 As shown, the second conveying port is provided with an auxiliary support roller 41 protruding toward the side close to the mold clamp device 3, so as to form rolling support for the bottom end surface of the mold 100 outside the conveying area of ​​the aforementioned third rollers 42, effectively avoiding the formation of reliable support for the part of the mold 100 outside the roller line bracket 44, and preventing the head collapse of the mold 100.

[0041] In some embodiments, see Figure 5As shown, the trolley frame 21 is further provided with a walking driving device 24 and a plurality of first rollers 25 on the bottom surface of the trolley frame 21, the mold changing track 1 comprises a track frame 12, the track 11 has two parallel and spaced tracks arranged on the track frame 12, each first roller 25 is rollingly supported on the top surface of each track 11, the track frame 12 is further provided with a rack 13 arranged along the extension direction of the track 11, and the driving gear 241 on the output shaft of the walking driving device 24 is engaged with the rack 13.

[0042] In the technical scheme, the walking driving device 24 is arranged on the trolley frame 21 and engaged with the rack 13 on the track frame 12 through the driving gear 241 to realize the walking of the trolley frame 21 as a whole, which is simple in structure and reliable and stable in driving, and the driving structure of the gear engagement also has a large output transmission torque.

[0043] In some embodiments, referring to Figure 4 As shown, the bottom surface of the trolley frame 21 is further provided with a plurality of first guide wheels 26, each first guide wheel 26 is located on both sides of the track 11 to form an anti-derailment structure with part of the first rollers 25, that is, through one first roller 25 in the middle and two first guide wheels 26 on both sides (for one position of the track 11), the left and right and upper parts of the track 11 are wrapped, which can ensure that the first roller 25 is reliably located on the top surface of the track 11 and prevent the track trolley from derailing.

[0044] In some embodiments, referring to Figure 7 As shown, the device frame 31 further comprises a mold lifting device 33 capable of driving the mold 100 to lift, the mold lifting device 33 comprises a lifting frame base 331, the lifting frame base 331 is provided with a tray assembly 332, the mold 100 is detachably positioned on the top surface of the tray assembly 332, the mold transverse moving assembly 32 is assembled on the device frame 31, the mold transverse moving assembly 32 comprises two frame inner conveying assemblies 321 arranged in parallel and spaced apart on both sides of the tray assembly 332, the mold lifting device 33 has a mold changing position (lowered state) and a molding position (raised state), during the process that the mold lifting device 33 is lowered from the molding position to the mold changing position, the bottom end surface of the mold 100 can be supported on the conveying top surfaces of the two frame inner conveying assemblies 321, so that when the mold 100 is supported on the two frame inner conveying assemblies 321, the mold 100 can be moved and conveyed towards the mold changing side or the production side when the two frame inner conveying assemblies 321 operate.

[0045] In a specific embodiment, the tray assembly 332 includes a main body plate 3321 and a lower mold locking mechanism (not labeled in the figure) on the main body plate 3321. Figures 10 to 12 As shown, the lower mold locking mechanism includes a lower locking plate 3322, a lower mold locking joint 3323, a lower slide plate 3324, and a lower driving cylinder 3325. The lower locking plate 3322 is assembled on the top surface of the main plate 3321. The lower driving cylinder 3325 and the lower slide plate 3324 are located on the side of the lower locking plate 3322 close to the main plate 3321. The lower mold locking joints 3323 are spaced apart on the lower slide plate 3324 and protrude from the side of the lower locking plate 3322 close to the mold 100. The lower driving cylinder 3325 is used to drive the lower slide plate 332 4 is moved laterally to realize the position switching of each lower mold locking joint 3323 and thus realize the unlocking or locking of the bottom end surface of the mold 100. It can be understood that, the bottom end surface of the mold 100 is formed with a lower groove (not shown in the figure) corresponding to the position of each lower mold locking joint 3323. Each lower mold locking joint 3323 can be embedded in and removed from the lower groove during the position switching process of the lower slide plate 3324, thereby realizing the connection between the lower mold of the mold 100 and the lifting frame base 331 of the mold lifting device 33 as a whole, which is beneficial to the clamping and opening operations of the upper and lower molds.

[0046] In some embodiments, the lower locking plate 3322 is provided with a lower positioning pin 3326 that can be pinned to the bottom end surface of the mold 100, so as to ensure the positional relationship between the mold 100 and the lower locking plate 3322 during the mold change process, thereby ensuring the reliable locking effect of the aforementioned lower mold locking mechanism.

[0047] In some embodiments, a plurality of second guide wheels 3327 are provided on both sides of the main plate 3321 parallel to the conveying direction of the mold 100 so as to guide the conveying direction of the mold 100 when the mold 100 is conveyed toward the production side by the aforementioned mold transverse movement assembly 32.

[0048] In some embodiments, see Figure 10As shown, the main plate 3321 is provided with a first stop plate 3329 at one end close to the production side, which is used to prevent the tray assembly 332 from moving towards the mold changing side, in particular, the aforementioned first stop plate 3329 is located at the bottom side of the main plate 3321, which can form a stop cooperation with the limiting structure (such as the fixed structure on the device frame) close to the mold changing side, so that the tray assembly 332 can only be allowed to move towards the production side but cannot move towards the mold changing side, that is, the first stop plate 3329 forms a mechanical limiting for the movement direction of the tray assembly 332, so that the tray assembly 332 can only move in one direction, preventing the mold 100 that should be transported to the production side from being moved to the mold changing side by mistake, thus ensuring the reliable operation of the automatic mold changing device.

[0049] In some embodiments, the lower locking plate 3322 is provided with a second stop plate 3328 at one end close to the production side, which is specifically arranged on the top surface of the lower locking plate 3322, and is used to prevent the mold 100 on the lower locking plate 3322 from moving towards the production side, which can prevent the overshoot of the new mold towards the production side when being transported to the target position, and further ensure the positioning of the new mold at the target position, improving the position accuracy of the mold.

[0050] In some embodiments, the main plate 3321 is provided with a gas-liquid-electric plug connector module 333 at one end close to the production side, which can be driven to rise and fall to be connected or disconnected with the gas-liquid-electric plug on the bottom end surface of the mold 100, in particular, the aforementioned gas-liquid-electric plug connector module 333 is drivingly connected with a connector module lifting cylinder 334, and the gas-liquid-electric plug connector module 333 is further integrated in the tray assembly 332, so that the tray assembly 332 and the mold 100 are always connected and moved synchronously during the process of transporting the mold 100 to the production side, and the integrated gas-liquid-electric plug connector module 333 can ensure that the mold 100 always remains in the production state during the movement on the production side, ensuring the consistency of the injection molding quality.

[0051] In some embodiments, referring to Figure 8 and Figure 9As shown, each of the frame inner conveying assemblies 321 is further provided with a guiding assembly (not labeled in the figure) on the side away from the tray assembly 332, the guiding assembly comprising a guiding support 3221, a plurality of third guiding wheels 3222 arranged at intervals along the conveying direction of the frame inner conveying assembly 321, and a lifting driving cylinder 3223 for driving the guiding support 3221 to lift and lower, each of the third guiding wheels 3222 in each of the guiding assemblies on both sides can rollingly contact the side wall of the mold 100 when the guiding assembly is in the raised position, and each of the third guiding wheels 3222 in each of the guiding assemblies on both sides is out of contact with the side wall of the mold 100 when the guiding assembly is in the lowered position as the mold 100 is driven to move towards the production side.

[0052] In this technical solution, by arranging one guiding assembly on each side of the two frame inner conveying assemblies 321 away from the tray assembly 332, the movement of the mold 100 can be limited and guided during the conveying of the mold 100 to the mold changing side, preventing the mold 100 from moving too much during conveying and causing misalignment with the transfer roller line 4 of the mold changing side and the old mold placing station 202 of the mold changing trolley 2, resulting in unsuccessful mold changing.

[0053] Further referring to Figure 9 As shown, each frame inner conveying assembly 321 comprises a conveying support 3211, the bottom end of which is fixedly connected to the bottom frame 313, and the top portion of which is provided with a plurality of support rollers 3212 at intervals along the length thereof, and a roller rotation driving device 323 (for example, a rotary motor provided with a speed reducer) is arranged between the two frame inner conveying assemblies 321, the roller rotation driving device 323 drives each support roller 3212 to rotate synchronously via a transmission shaft 324 and a transmission chain 325, and the structure is simple and compact. The aforementioned guiding assembly is slidably connected to the outer side wall surface of the two conveying supports 3211 via a linear guide rail 3224.

[0054] In some embodiments, the device frame 31 comprises a top frame 311, and the top frame 311 is provided with an upper mold locking mechanism 312 for locking the top end face of the mold 100, as shown in detail in Figures 13 to 15As shown, the upper die locking mechanism 312 includes an upper locking plate 3121 fixedly connected to the bottom end surface of the top frame 311, the top surface of the upper locking plate 3121 is slidably connected with an upper sliding plate 3123, one end of each upper locking die joint 3122 is fixedly connected to the upper sliding plate 3123 and the other end protrudes from the bottom side surface of the upper locking plate 3121 to be able to cooperate with the upper groove on the top end surface of the die 100 to realize the locking of the upper die, the top surface of the upper locking plate 3121 is also fixedly connected with an upper driving cylinder 3125, which is used to drive the linear reciprocating movement of the aforementioned upper sliding plate 3123, thereby realizing the locking and unlocking of the aforementioned each upper locking die joint 3122 to the upper die. The aforementioned upper sliding plate 3123 and lower sliding plate 3324 are respectively in the sliding groove of the aforementioned upper locking plate 3121 and lower locking plate 3322 and are reliably limited in the corresponding sliding groove via the upper pressing plate 3124 and lower pressing plate 33241.

[0055] According to the embodiment of the present application, a die changing method using the automatic die changing device is also provided, including the following steps:

[0056] After obtaining the die changing instruction, the die changing trolley 2 is controlled to move to the new die feeding station to place the new die on the new die placing station 201, and the old die is simultaneously controlled to be unloaded from the die clamp device 3, and the die horizontal moving assembly 32 is controlled to operate to transport the unloaded old die towards the die changing side until the old die is placed on the old die placing station 202 of the die changing trolley 2.

[0057] After the new die placing station 201 of the die changing trolley 2 is controlled to move to the position aligned with the first conveying port, the die changing trolley 2 operates to transport the new die at the new die placing station 201 into the die clamp device 3, and after the new die is transported to the target position by the die horizontal moving assembly 32, the new die is locked, thereby realizing the automatic changing of the new and old dies.

[0058] In some embodiments, the unloading of the old die from the die clamp device 3 specifically includes:

[0059] When the automatic die changing device includes a lower die locking mechanism, an upper die locking mechanism 312, a die lifting device 33, and a guide assembly, the lower die locking mechanism and the upper die locking mechanism 312 are controlled to lock the old die, then the die lifting device 33 is controlled to descend to the die changing position, so that the old die is supported on the conveying top surface of the two in-frame conveying assemblies 321, and the guide assembly is controlled to be in the raised position until the old die is out of contact with the conveying top surface of the in-frame conveying assembly 321 and the new die is conveyed to the target position, and then the guide assembly is controlled to be in the lowered position.

[0060] Those skilled in the art can easily understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0061] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic mold changing device for refrigerator foaming, characterized in that: The invention comprises a mold changing track (1), a mold changing trolley (2) and a mold clamp device (3), wherein the mold clamp device (3) comprises a device frame (31), wherein the device frame (31) comprises a mold transverse movement component (32) for driving the mold (100) to move closer to the mold changing side or closer to the production side, wherein the mold changing track (1) and the mold changing trolley (2) are located on the mold changing side, wherein the mold changing trolley (2) comprises a new mold placement station (201) and an old mold placement station (202), wherein the mold changing trolley (2) is placed on the mold changing track (1) and can be driven to move back and forth in a straight line along the extension direction of the track (11) of the mold changing track (1) so as to achieve alignment of one of the new mold placement station (201) and the old mold placement station (202) with the first conveying port of the mold transverse movement component (32) close to the mold changing side.

2. The automatic mold changing device according to claim 1, characterized in that: The mold changing trolley (2) includes a trolley frame (21), and a plurality of first rollers (221) and second rollers (222) are provided in parallel and spaced apart in the areas corresponding to the trolley frame (21) and the new mold placement station (201) and the old mold placement station (202). The trolley frame (22) is also provided with a first roller driving device (231) for driving the first rollers (221) to rotate synchronously and a second roller driving device (232) for driving the second rollers (222) to rotate synchronously, and the first roller driving device (231) and the second roller driving device (232) are independently controlled; and / or, further includes a transfer roller line (4), the transfer roller line (4) is located between the mold changing trolley (2) and the first conveying port, and the second conveying port of the transfer roller line (4) close to the mold clamp device (3) is aligned with the first conveying port.

3. The automatic mold changing device according to claim 2, characterized in that: The trolley frame (21) is also provided with a travel drive device (24) and a plurality of first rollers (25) on the bottom surface of the trolley frame (21); the mold changing track (1) includes a track frame (12); the track (11) has two parallel and spaced apart tracks and is arranged on the track frame (12); each of the first rollers (25) is rollingly supported on the top surface of each track (11); the track frame (12) is also provided with a rack (13) arranged along the extension direction of the track (11); the driving gear (241) on the output shaft of the travel drive device (24) is engaged with the rack (13); and / or, the second conveying port is provided with an auxiliary support roller (41) protruding toward the side close to the mold clamp device (3).

4. The automatic mold changing device according to claim 3, characterized in that: A plurality of first guide wheels (26) are also provided on the bottom surface of the trolley frame (21), and each of the first guide wheels (26) is located on both sides of the track (11) to form an anti-derailment structure together with some of the first rollers (25).

5. The automatic mold changing device according to claim 1, characterized in that: The device frame (31) also includes a mold lifting device (33) capable of driving the mold (100) to rise and fall, the mold lifting device (33) includes a lifting frame base (331), a tray assembly (332) is placed on the lifting frame base (331), the mold (100) is detachably positioned on the top surface of the tray assembly (332), the mold transverse movement assembly (32) is assembled on the device frame (31), the mold transverse movement assembly (32) includes two frame conveying assemblies (321) arranged in parallel and spaced on both sides of the tray assembly (332), the mold lifting device (33) has a mold changing position and a mold position, when the mold lifting device (33) is lowered from the mold position to the mold changing position, the bottom end surface of the mold (100) can be supported on the conveying top surfaces of the two frame conveying assemblies (321).

6. The automatic mold changing device according to claim 5, characterized in that: The tray assembly (332) includes a main body plate (3321) and a lower mold locking mechanism on the main body plate (3321), the lower mold locking mechanism includes a lower locking plate (3322), a lower locking mold joint (3323), a lower slide plate (3324), and a lower driving cylinder (3325), the lower locking plate (3322) is assembled on the top surface of the main body plate (3321), the lower driving cylinder (3325) and the lower slide plate (3324) are in the lower locking plate. The plate (3322) is close to the side of the main plate (3321), and each lower locking joint (3323) is arranged at intervals on the lower slide plate (3324) and protrudes from the side of the lower locking plate (3322) close to the mold (100). The lower driving cylinder (3325) is used to drive the lower slide plate (3324) to move horizontally to achieve position switching of each lower locking joint (3323) and thereby achieve unlocking or locking of the bottom end surface of the mold (100).

7. The automatic mold changing device according to claim 6, characterized in that: The lower locking plate (3322) is provided with a lower positioning pin (3326) capable of being pinned to the bottom end surface of the mold (100), and / or, the main plate (3321) is provided with a plurality of second guide wheels (3327) on both sides parallel to the conveying direction of the mold (100); and / or, the main plate (3321) is provided with a first baffle (3329) at one end close to the production side, and the first baffle (3329) is used to prevent the tray assembly (332) from being displaced toward the mold changing side; and / or, The lower locking plate (3322) is provided with a second baffle (3328) at one end close to the production side, and the second baffle (3328) is used to prevent the mold (100) on the lower locking plate (3322) from being displaced toward the production side; and / or, the main plate (3321) is provided with a gas-liquid-electric plug-in connector module (333) at one end close to the production side, and the gas-liquid-electric plug-in connector module (333) can be driven to rise and fall to connect with or unplug the gas-liquid-electric socket on the bottom end surface of the mold (100).

8. The automatic mold changing device according to claim 5, characterized in that: A guide assembly is further provided on the side of each of the conveying assemblies (321) in the frame away from the tray assembly (332), and the guide assembly includes a guide bracket (3221), a plurality of third guide wheels (3222) arranged at intervals along the conveying direction of the conveying assembly (321) in the frame, and a lifting drive cylinder (3223) for driving the guide bracket (3221) to rise and fall. When the guide assembly is in the raised position, the third guide wheels (3222) in each of the guide assemblies on both sides can roll in contact with the side wall of the mold (100), and when the mold (100) is driven to move toward the production side, the guide assembly is in the lowered position, and the third guide wheels (3222) in each of the guide assemblies on both sides are out of contact with the side wall of the mold (100).

9. The automatic mold changing device according to claim 1, characterized in that: The device frame (31) includes a top frame (311), and the top frame (311) is provided with an upper mold locking mechanism (312). The upper mold locking mechanism (312) is used to lock the top end surface of the mold (100).

10. A mold changing method using the automatic mold changing device according to any one of claims 1 to 9, characterized in that: The steps include: After receiving the mold change instruction, the mold change trolley (2) is controlled to move to the new mold loading station to place the new mold on the new mold placement station (201), and the old mold is simultaneously controlled to be unloaded from the mold clamp device (3), and the mold transverse movement component (32) is controlled to operate to transport the unloaded old mold toward the mold change side until the old mold is transported and placed on the old mold placement station (202) of the mold change trolley (2); After controlling the new mold placement station (201) of the mold changing trolley (2) to move to a position aligned with the first conveying port, the mold changing trolley (2) operates to convey the new mold at the new mold placement station (201) into the mold clamp device (3), and after the new mold is conveyed to the target position by the mold transverse movement component (32), the new mold is locked.

11. The mold changing method according to claim 10, characterized in that: The method of removing the old mold from the mold fixture device (3) specifically includes: When the automatic mold changing device includes a lower mold locking mechanism, an upper mold locking mechanism (312), a mold lifting device (33), and a guide assembly, the lower mold locking mechanism and the upper mold locking mechanism (312) are controlled to lock the old mold, and then the mold lifting device (33) is controlled to descend to the mold changing position so that the old mold is supported on the conveying top surfaces of the two conveying assemblies (321) in the frame, and the guide assembly is controlled to be in a raised position until the old mold is out of contact with the conveying top surfaces of the conveying assemblies (321) in the frame and the new mold is conveyed to the target position, and the guide assembly is controlled to be in a descending position.

Images