Stacking mold side taking type material taking system for clothes hangers

Abstract

The stacking mold side taking type material taking system is characterized in that the stacking mold side taking type material taking system comprises a rack table, a piece taking moving mechanism, two overturning mechanisms and a material conveying mechanism, the piece taking moving mechanism, the two overturning mechanisms and the material conveying mechanism are arranged on the rack table, two clamping arm assemblies are symmetrically arranged on the piece taking moving mechanism, and a plurality of first clamping jigs are arranged on the clamping arm assemblies; the part taking moving mechanism is used for driving the two clamping arm assemblies to move front and back between a material taking position arranged on the front portion of the rack table and a discharging position arranged on the rear portion of the rack table, the two overturning mechanisms are symmetrically arranged at the discharging position of the rack table, and bearing clamping jigs are arranged on the overturning mechanisms. The overturning mechanism drives the bearing and clamping jig to be overturned downwards to the position above the material conveying mechanism, and a material placing displacement mechanism is arranged between the overturning mechanism and the bearing and clamping jig and used for driving the bearing and clamping jig to move downwards to place a product onto the material conveying mechanism; the device has the advantages that a plurality of clothes hanger products can be simultaneously taken, quickly transferred and outwards transported, and the working efficiency is relatively high.

Description

Technical Field

[0001] This invention relates to a product stacking and gripping device, and more particularly to a side-grabbing material handling system for clothes hangers. Background Technology

[0002] Currently, injection molds for hangers are mainly 4-cavity, 6-cavity, or 8-cavity, which are less efficient than multi-cavity hanger production equipment using stacked molds. Multi-cavity hanger production equipment uses stacked molds that combine multiple cavities into one mold, resulting in higher production efficiency and lower injection molding costs. However, the current method for removing hangers from the stacked mold is often to use a gripper on a robotic arm to pick them up and move them to the material handling mechanism for transport to the next processing station. This limits the number of hangers that can be removed each time, resulting in lower overall production efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a stacked mold side-loading material handling system that can simultaneously pick up multiple hanger products in an injection molding machine and quickly transfer, flip, release downwards, and transport outwards the hangers, with high overall working efficiency.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: a stacking mold side-loading material handling system for a clothes hanger, including a frame table and a part-picking moving mechanism, two flipping mechanisms, and a material conveying mechanism respectively disposed on the frame table. Two clamping arm assemblies are symmetrically arranged on the part-picking moving mechanism, and multiple first clamping fixtures are disposed on the clamping arm assemblies. The part-picking moving mechanism is used to drive the two clamping arm assemblies to move back and forth between a material-picking position at the front and a material-unloading position at the rear of the frame table. When the two clamping arm assemblies move to the material-picking position, they simultaneously extend into the two mold cavities of the external stacking mold injection molding machine and respectively clamp the product through the multiple first clamping fixtures; the two flipping mechanisms... The rotating mechanisms are symmetrically arranged at the unloading positions of the machine frame and are located on the outer side of one of the gripping arm assemblies, away from the other gripping arm assembly. The rotating mechanism is provided with a receiving gripping fixture, which is used to grip the product located on the plurality of first gripping fixtures at the unloading position. The rotating mechanism drives the receiving gripping fixture to rotate downwards to above the conveying mechanism. A material release displacement mechanism is provided between the rotating mechanism and the receiving gripping fixture. The material release displacement mechanism is used to drive the receiving gripping fixture to move downwards to place the product on the conveying mechanism. The conveying mechanism is used to transport the product outwards.

[0005] Compared with the prior art, the advantages of this invention are that multiple products from two mold cavities of an external stacked injection molding machine are removed at once by the first gripping fixture on the two gripping arm assemblies, and the products are synchronously transferred to the conveying mechanism for delivery by the part removal moving mechanism, the flipping mechanism, and the receiving gripping fixture. During material release, the material release displacement mechanism drives the receiving gripping fixture to move downward to place the product onto the conveying mechanism, effectively protecting the product structure. Furthermore, after material release, to facilitate upward flipping, the material release displacement mechanism can drive the receiving gripping fixture to move upward and reset, thereby increasing the distance between the receiving gripping fixture and the conveying mechanism. The equipment is highly automated. During the flipping process of the flipping mechanism, the gripping arm assembly can move to the picking position to pick up the next batch of parts, which greatly improves the overall production efficiency. The overall structure of the equipment is compact. A further optimization of this structure is to set up a sliding rail slider moving mechanism with locking and positioning mechanism between the flipping mechanism on both sides and the frame table. This allows the flipping mechanism to retract and lock towards the middle of the frame table during the overall transportation of the equipment, thereby meeting the width requirements for container transportation. The whole set of equipment has high flexibility and convenience in logistics transportation.

[0006] Specifically, the gripping arm assembly includes a movable base plate, a base plate moving mechanism, and a first gripping frame vertically fixed on the movable base plate. The movable base plate is moved along the inward and outward directions by the base plate moving mechanism and is mounted on a movable base in the part-taking moving mechanism. A plurality of the first gripping fixtures are fixedly mounted on the first gripping frame facing outwards from the flipping mechanism. The base plate moving mechanism drives the moving base plate to move along the inward and outward directions on the moving base, causing the first gripping frames on both sides to move outward to grip the product and then retract inward, thus smoothly moving it out of the mold cavity and moving it to the receiving gripping fixture at the material picking position, transferring the product to the receiving gripping fixture. The overall gripping and transfer actions have a high degree of synchronization, effectively improving the overall work efficiency. The base plate moving mechanism adopts a conventional device moving mechanism, such as a servo motor drive mechanism, a cylinder drive mechanism, or a transmission gear and rack drive mechanism. In this invention, a transmission gear and rack drive mechanism is selected, that is, the output end of the rotary motor drives the transmission gear to rotate, and the transmission gear then drives the meshing transmission rack to move linearly. Parallel slide rail slider guide components are set on both sides to assist the linear movement.

[0007] Specifically, the first clamping frame includes a first base side plate, a second base side plate, multiple fixture fixing tubes, at least two reinforcing rods, and a side reinforcement plate. The first base side plate and the second base side plate are respectively vertically and parallelly fixedly installed at the front and rear ends of the movable base plate. The multiple fixture fixing tubes are arranged from top to bottom, and each fixture fixing tube passes horizontally from front to back through a positioning hole provided on the first base side plate and is fixedly connected to the second base side plate. The at least two reinforcing rods are arranged vertically from front to back and fixedly installed on the outside of the multiple fixture fixing tubes. The side reinforcement plate is fixedly installed on the outside of the at least two reinforcing rods along the front-back direction and is fixedly connected to the first base side plate and the second base side plate respectively. The first clamping fixture is fixedly installed on two adjacent fixture fixing tubes facing the outside of the flipping mechanism. When there are two or more rows of the first clamping fixtures along the vertical direction, each row of the first clamping fixtures is located on two different fixture fixing tubes. The structure of the first gripper ensures the sturdiness and stability of the frame, preventing the position of the first gripper fixture from shifting, thereby accurately gripping the product and transferring the product to the receiving gripper fixture.

[0008] The first clamping fixture includes a first fixture plate and multiple first pneumatic clamps. The first fixture plate is fixedly mounted on the outside of two adjacent fixture fixing tubes, and the multiple first pneumatic clamps are respectively fixedly mounted at preset clamping positions on the first fixture plate. Multiple first pneumatic clamp groups can be set on a single first fixture plate, and each first pneumatic clamp group includes at least three first pneumatic clamps to provide triangular stable clamping for the hook part and both sides of the hanger. The installation is relatively flexible and convenient, and the position and number of the first fixture plate and multiple first pneumatic clamps can be adjusted according to the actual position and number of hangers, thereby matching the actual needs of different users.

[0009] The component-picking and moving mechanism further includes a moving main shaft, a conveyor belt, and a pulley drive assembly. The moving main shaft is fixedly mounted on the frame platform in the front-to-back direction. The pulley drive assembly drives the conveyor belt to move the moving base along the moving main shaft in the front-to-back direction. Two rows of first slide rail slider moving assemblies are arranged parallel to each other in the front-to-back direction between the moving base and the moving main shaft. The component-picking and moving mechanism adopts a bottom-moving method, so the weight of the various devices located above can be distributed by the two rows of first slide rail slider moving assemblies and then act together on the moving main shaft, resulting in a relatively stable and fast movement process.

[0010] The receiving and gripping fixture includes a second gripping frame and multiple second gripping fixtures. The second gripping frame includes a flipping connecting frame and a gripping frame body. The flipping mechanism is used to drive the flipping connecting frame to flip. The material dispensing displacement mechanism is disposed between the flipping mechanism and the flipping connecting frame. The gripping frame body is vertically fixed at the bottom of the flipping connecting frame in a downward flipped state. The second gripping fixture includes a second fixture plate and multiple second pneumatic clamps. The second fixture plate is fixedly disposed on the gripping frame body, and the multiple second pneumatic clamps are respectively fixedly disposed at preset gripping positions on the second fixture plate. The number of second pneumatic clamps is usually the same as that of the first pneumatic clamps, but their positions are staggered from the first pneumatic clamps to facilitate gripping hangers from the first pneumatic clamps. Since multiple hangers need to be gripped simultaneously, the area of ​​the second gripping frame is usually large. Therefore, a flipping connecting frame is used to drive the second gripping frame to flip, resulting in a more secure connection and enabling rapid flipping.

[0011] The flipping mechanism includes two flipping uprights, one flipping shaft, two flipping plates, and two flipping drive cylinders. The two flipping uprights are vertically fixed on the front and rear sides of the unloading position of the machine frame, respectively. The flipping shaft is horizontally arranged between the two flipping uprights along the front-back direction. The rear end of the flipping shaft is rotatably connected to the flipping upright located on the rear side. The middle parts of the two flipping plates are rotatably arranged on the front and rear parts of the flipping shaft, respectively. The bottom of each flipping drive cylinder is rotatably connected to the bottom of the corresponding flipping upright along the inward and outward direction. The top end of the drive rod of the flipping drive cylinder is rotatably connected to the rotating pin fixed on the outer end of the flipping plate through a floating joint. The material feeding displacement mechanism includes a rotation drive assembly and two sets of displacement transmission assemblies. The rotation drive assembly is arranged on any one of the flipping uprights and is used to control the rotation state of the flipping shaft. Each flipping shaft controls the up-and-down movement of the flipping connecting frame when it is in the downward flipping state through a set of displacement transmission assemblies. The inner end of the flipping plate is slidably connected to the upper part of the flipping connecting frame when it is in the downward flipping state through a second slide rail slider moving assembly. When the drive rod of the tilting drive cylinder retracts downward, it drives the outer end of the tilting plate to rotate downward, causing the inner end of the tilting plate to rotate upward. This, in turn, drives the tilting connecting frame and the clamping frame to rotate upward. Finally, after the clamping frame rotates to the vertical position, the drive rod of the tilting drive cylinder stops moving, facilitating the second pneumatic clamp to clamp the hanger from the first clamping fixture. At this time, the rotation drive assembly controls the rotation state of the tilting shaft to be locked, and no relative movement occurs between the tilting connecting frame and the tilting plate. When the drive rod of the tilting drive cylinder extends upward, it drives the outer end of the tilting plate to rotate upward, causing the inner end of the tilting plate to rotate downward, thereby driving the tilting connecting frame... The clamping frame rotates downwards. When the clamping frame rotates to a horizontal position, the drive rod of the flipping drive cylinder stops. Then, the rotation drive assembly controls the flipping shaft to start rotating. The flipping shaft controls the flipping connecting frame, which is in the downward flipping state, to move downwards through a set of displacement transmission components. The hanger is placed on the material conveying mechanism, and the second pneumatic clamp is released to release the material. After the material is released, the flipping shaft controls the flipping connecting frame to move upwards and reset through a set of displacement transmission components. The material conveying mechanism transports the hanger out for subsequent processing steps. The setting of the second slide rail slider moving assembly provides stable support for the movement of the flipping connecting frame and improves the connection firmness.

[0012] The rotation drive assembly includes a displacement drive motor, a reducer, a transmission belt, and a transmission wheel. The displacement transmission assembly includes a tension wheel, two idler wheels, and a displacement drive belt. The reducer is fixedly mounted rearward at the front of the tilting stand located on the front side. The displacement drive motor drives one end of the transmission belt to rotate through the reducer. The transmission wheel is coaxially fixedly sleeved on the front end of the tilting shaft. The other end of the transmission belt is wound around the transmission wheel and drives the transmission wheel to rotate. The rear end of the tilting shaft is rotatably connected to the tilting stand located on the rear side. The upper end of the displacement drive belt is fixedly connected to the upper outer side of the tilting connecting frame through an upper fixing block. The lower end of the displacement drive belt is fixedly connected to the lower outer side of the tilting connecting frame through a lower fixing block. The tension wheel is fixedly sleeved on the tilting shaft. The displacement drive belt is tensioned and wound around the outer surface of the tension wheel. The two idler wheels are respectively located above and below the tension wheel and are rotatably connected to the tilting plate. The idler wheels roll and press against the outer side of the displacement drive belt. This structure makes full use of the gap between the tilting frame, the tilting plate, and the tilting connecting frame to set up the transmission structure. The design is quite ingenious. By using the tilting shaft, the rotation of the tilting plate is realized, and the transmission from the displacement drive motor to the tension wheel is also realized. This greatly simplifies the structure, size, and weight of the rotation drive component and the displacement transmission component, effectively saving costs, reducing the difficulty of production and assembly, and facilitating the overall transportation of the entire system.

[0013] The material handling mechanism includes two symmetrically arranged material handling platforms, material handling trays mounted on the platforms, and a tray moving mechanism. Each material handling platform is fixed outward from the bottom space of the flipping mechanism on the corresponding side. The tray moving mechanism drives the material handling tray to move inward and outward along the material handling platform. The material handling tray is generally equipped with hanger positioning posts to facilitate the stacking and storage of hangers and their positioning during subsequent robotic gripping. The material handling platform can also adopt an existing double-layer structure to further improve material handling efficiency. Attached Figure Description

[0014] Figure 1 This is a partial structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the gripping arm assembly in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the component-retrieving and moving mechanism in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the flipping mechanism and the receiving and clamping fixture in Embodiment 2 of the present invention; Figure 5 This is a partial structural schematic diagram of the flipping mechanism in Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the overall structure of the present invention.

[0015] Explanation of reference numerals in the attached figures: 1. Frame; 2. Movable base plate; 31. Movable base; 32. Movable spindle; 33. Conveyor belt; 34. Pulley drive assembly; 35. First slide rail slider moving assembly; 41. First base side plate; 411. Positioning hole; 42. Second base side plate; 43. Fixture fixing tube; 44. Reinforcing rod; 45. Side reinforcing plate; 51. First fixture plate; 52. First pneumatic clamp; 61. Material conveying platform; 62. Material conveying pallet; 71. Flip-over connecting frame; 72. Clamping frame 73. Second fixture plate; 74. Second pneumatic clamp; 81. Tilting stand; 82. Tilting shaft; 83. Drive rod; 84. Tilting plate; 841. Rotating pin; 85. Tilting drive cylinder; 851. Floating joint; 86. Second slide rail slider moving assembly; 91. Displacement drive motor; 92. Reducer; 93. Transmission belt; 94. Transmission wheel; 95. Tensioner wheel; 96. Idler wheel; 97. Displacement drive belt; 971. Upper fixed block; 972. Lower fixed block. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0017] Example 1: As Figures 1-3As shown, a stacking injection molding side-loading material handling system for a clothes hanger includes a frame platform 1 and a part-picking moving mechanism, two flipping mechanisms, and a material conveying mechanism respectively disposed on the frame platform 1. Two clamping arm assemblies are symmetrically arranged on the part-picking moving mechanism, and multiple first clamping fixtures are disposed on the clamping arm assemblies. The part-picking moving mechanism drives the two clamping arm assemblies to move back and forth between a material-picking position at the front and a material-unloading position at the rear of the frame platform 1. When the two clamping arm assemblies move to the material-picking position, they simultaneously extend into the two mold cavities of the external stacking injection molding machine 12 and pass through multiple first clamping fixtures respectively. A clamping fixture grips a product. The clamping arm assembly includes a movable base plate 2, a base plate moving mechanism, and a first clamping frame vertically fixed on the movable base plate 2. The movable base plate 2 is moved along the inward and outward directions on the movable base 31 in the product retrieval moving mechanism via the base plate moving mechanism. Here, with the position of the symmetrical center between two clamping arm assemblies as the inner side, multiple first clamping fixtures are fixedly mounted on the outer side of the first clamping frame. The first clamping frame includes a first base side plate 41, a second base side plate 42, multiple fixture fixing tubes 43, two reinforcing rods 44, and... Side reinforcing plates 45, first base side plates 41 and second base side plates 42 are respectively vertically and parallelly fixed at the front and rear ends of the movable base plate 2. Multiple fixture fixing tubes 43 are arranged from top to bottom, and each fixture fixing tube 43 passes horizontally from front to back through the positioning hole 411 provided on the first base side plate 41 and is fixedly connected to the second base side plate 42. Two reinforcing rods 44 are arranged vertically from front to back and fixedly installed on the outside of the multiple fixture fixing tubes 43. Side reinforcing plates 45 are fixedly installed on the outside of the two reinforcing rods 44 along the front-back direction and are respectively connected to the first base side plate 41 and the second base side plate 42. A base side plate 41 and a second base side plate 42 are fixedly connected. A first gripping fixture is fixedly installed on the outside of a fixture fixing tube 43. The first gripping fixture includes a first fixture plate 51 and a plurality of first pneumatic clamps 52. The first fixture plate 51 is fixedly installed on two adjacent fixture fixing tubes 43 facing the outside of the flipping mechanism. The plurality of first gripping fixtures are arranged in two rows along the vertical direction. Each row of first gripping fixtures is located on two different fixture fixing tubes 43. The plurality of first pneumatic clamps 52 are fixedly installed at preset gripping positions on the first fixture plate 51.The number of fixture fixing tubes 43 and reinforcing rods 44 is set according to actual needs. The first clamping fixture can be arranged in two or more rows along the vertical direction, corresponding to the product position inside the stacked injection molding machine 12, so as to facilitate the one-time clamping of all products that have been injected into the mold cavity. For example, when there are two rows of first clamping fixtures, the first row of first clamping fixtures is fixed on the first and second fixture fixing tubes 43 from the top, and the second row of first clamping fixtures is fixed on the third and fourth fixture fixing tubes 43 from the top, so as to avoid overlapping. Multiple fixtures can be set on one first fixture plate 51. The first pneumatic clamp group includes three first pneumatic clamps 52, which provide triangular stable clamping for the hook part and both sides of the hanger. When four first pneumatic clamp groups are set on a first fixture plate 51, with the triangular ends of each first pneumatic clamp group facing the center, four first pneumatic clamp groups can be arranged on a first fixture plate 51 at the same time to clamp four hangers. The installation is more flexible and convenient. The position and number of the first fixture plate 51 and multiple first pneumatic clamps 52 can be adjusted according to the actual position and number of hangers, so as to match the actual needs of different users.

[0018] The picking and moving mechanism also includes a moving spindle 32, a conveyor belt 33, and a pulley drive assembly 34. The moving spindle 32 is fixedly mounted on the frame 1 in the front-back direction. The pulley drive assembly 34 is used to drive the conveyor belt 33 to move the moving base 31 in the front-back direction on the moving spindle 32. Two rows of first slide rail slider moving assemblies 35 are arranged between the moving base 31 and the moving spindle 32 in the front-back direction to provide support and guidance for the movement of the moving base 31.

[0019] Two flipping mechanisms are symmetrically arranged at the unloading position of the frame platform 1, each located on the outer side of one gripping arm assembly away from the other. Each flipping mechanism is equipped with a receiving gripping fixture, which is used to grip the product located on the gripping arm assembly at the unloading position. The flipping mechanism drives the receiving gripping fixture downwards to above the conveying mechanism. A feeding displacement mechanism is provided between the flipping mechanism and the receiving gripping fixture, which is used to move the receiving gripping fixture downwards to place the product onto the conveying mechanism, which then transports the product outwards. The receiving gripping fixture and flipping mechanism can be a combination of an existing robotic arm and a conventional hanger gripping fixture, or a feeding displacement mechanism composed of a lifting cylinder or a motor-driven lifting platform that drives the robotic arm's lifting and lowering. Such equipment is widely used in existing automated hanger production; however, the number of hangers that can be gripped at one time is relatively limited.

[0020] The material handling mechanism includes two symmetrically arranged material handling platforms 61, material handling trays 62 mounted on the material handling platforms 61, and a tray moving mechanism. Each material handling platform 61 is fixedly positioned outward from the bottom space of the flipping mechanism on the corresponding side. The tray moving mechanism drives the material handling trays 62 to move along the inward and outward directions on the material handling platform 61. The material handling platforms 61, material handling trays 62, and tray moving mechanism can adopt existing conventional material handling equipment, or a double-layer circulating material handling equipment with a double-layer structure can be used to improve material handling efficiency. The material handling trays 62 are usually equipped with positioning pins to receive and position hangers, as well as to stack hangers.

[0021] Example 2: Figure 1 , 4 As shown in Figures 5 and 6, the remaining parts are the same as in Embodiment 1, except that the receiving clamping fixture includes a second clamping frame and multiple second clamping fixtures. The second clamping frame includes a flipping connecting frame 71 and a clamping frame body 72. A flipping mechanism is used to drive the flipping connecting frame 71 to flip. A material feeding displacement mechanism is set between the flipping mechanism and the flipping connecting frame 71. The clamping frame body 72 is vertically fixed at the bottom of the flipping connecting frame 71 in a downward flipping state, that is, when the flipping connecting frame 71 flips downward, it is in the vertical direction, and the clamping frame body 72 is in the horizontal direction. The second clamping fixture includes a second fixture plate 73 and multiple second pneumatic clamps 74. The second fixture plate 73 is fixedly set on the clamping frame body 72, and the multiple second pneumatic clamps 74 are respectively fixedly set at preset clamping positions on the second fixture plate 73. The multiple second pneumatic clamps 74 can clamp the hanger located on the first fixture plate 51 at one time, greatly improving the transfer efficiency.

[0022] The tilting mechanism includes two tilting uprights 81, a tilting shaft 82, two tilting plates 84, and two tilting drive cylinders 85. The two tilting uprights 81 are vertically fixed to the front and rear sides of the unloading position on the machine frame 1, respectively. The tilting shaft 82 is horizontally positioned between the two tilting uprights 81 along the front-rear direction. The rear end of the tilting shaft 82 is rotatably connected to the tilting upright 81 located on the rear side. The middle portions of the two tilting plates 84 are rotatably positioned at the front and rear of the tilting shaft 82, respectively. The bottom of each tilting drive cylinder 85 is rotatably connected to the bottom of the corresponding tilting upright 81 along the inward-outward direction. The top end of the drive rod 83 is rotatably connected to the rotating pin 841 fixedly installed on the outer end of the flipping plate 84 via a floating joint 851. The material feeding displacement mechanism includes a rotation drive assembly and two sets of displacement transmission assemblies. The rotation drive assembly is installed on a flipping stand 81 located on the front side and is used to control the rotation state of the flipping shaft 82. Each flipping shaft 82 controls the flipping connecting frame 71 to move up and down when it is in the downward flipping state through a set of displacement transmission assemblies. The inner end of the flipping plate 84 and the upper part of the flipping connecting frame 71 when it is in the downward flipping state are slidably connected through the second slide rail slider moving assembly 86.

[0023] The rotation drive assembly includes a displacement drive motor 91, a reducer 92, a transmission belt 93, and a transmission pulley 94. The displacement transmission assembly includes a tension pulley 95, two idler pulleys 96, and a displacement drive belt 97. The reducer 92 is fixedly mounted rearward at the front of the tilting stand 81 located on the front side. The displacement drive motor 91 drives one end of the transmission belt 93 to rotate through the reducer 92. The transmission pulley 94 is coaxially fixedly sleeved on the front end of the tilting shaft 82. The other end of the transmission belt 93 is wound around the transmission pulley 94 and drives the transmission pulley 94 to rotate. The rear end of the tilting shaft 82 is located at the rear side. The tilting frame 81 is rotatably connected. The upper end of the displacement drive belt 97 is fixedly connected to the upper outer side of the tilting connecting frame 71 through the upper fixing block 971. The lower end of the displacement drive belt 97 is fixedly connected to the lower outer side of the tilting connecting frame 71 through the lower fixing block 972. The tension wheel 95 is fixedly sleeved on the tilting shaft 82. The displacement drive belt 97 is tensioned and wound around the outer wheel surface of the tension wheel 95. Two idler wheels 96 are respectively set at the upper and lower parts of the tension wheel 95 and are rotatably connected to the tilting plate 84. The idler wheels 96 roll and press against the outer side of the displacement drive belt 97. The displacement drive motor 91 drives one end of the transmission belt 93 to rotate via the reducer 92. The other end of the transmission belt 93 drives the transmission wheel 94 to rotate. At this time, the tilting shaft 82 rotates synchronously with the transmission wheel 94, and then transmits power to the tension wheel 95, causing the tension wheel 95 to rotate synchronously with the tilting shaft 82. When the tension wheel 95 rotates, it drives the tensioned displacement drive belt 97 to move. Since the upper and lower ends of the displacement drive belt 97 are fixedly connected to the tilting connecting frame 71, the movement of the displacement drive belt 97 can drive the entire tilting connecting frame 71 to move, thereby realizing the movement of the displacement drive motor 91. The transmission process from the flip shaft 82 to the flip connecting frame 71 is achieved by the displacement drive motor 91 controlling the flip connecting frame 71 to move up and down. The second slide rail slider moving assembly 86 provides support and guidance during movement, ensuring a relatively stable movement. When the flip shaft 82 is not rotating, the second slide rail slider moving assembly 86 acts as a connection between the flip plate 84 and the flip connecting frame 71, enabling the flip plate 84 to drive the flip connecting frame 71 to rotate. At this time, the displacement drive belt 97 rotates around the tension wheel 95, while the tension wheel 95 itself does not rotate.

Claims

1. A stacking and side-loading material handling system for a clothes hanger, characterized in that... The system includes a frame platform and a part-picking and moving mechanism, two flipping mechanisms, and a material conveying mechanism respectively mounted on the frame platform. The part-picking and moving mechanism has two symmetrically arranged gripping arm assemblies, each with multiple first gripping fixtures. The part-picking and moving mechanism drives the two gripping arm assemblies to move back and forth between a material-picking position at the front and a material-unloading position at the rear of the frame platform. When the two gripping arm assemblies move to the material-picking position, they simultaneously extend into the two mold cavities of the external stack-molding injection molding machine and respectively grip the product using the multiple first gripping fixtures. The two flipping mechanisms are symmetrically arranged at the material-unloading position of the frame platform. Each of the first clamping arm assemblies is located on the outer side of one of the clamping arm assemblies, away from the other. The flipping mechanism is provided with a receiving clamping fixture, which is used to clamp the product located on the plurality of first clamping fixtures at the material picking position. The flipping mechanism drives the receiving clamping fixture to flip downward to above the conveying mechanism. A material release displacement mechanism is provided between the flipping mechanism and the receiving clamping fixture. The material release displacement mechanism is used to drive the receiving clamping fixture downward to place the product on the conveying mechanism. The conveying mechanism is used to transport the product outward.

2. The stacking and side-loading material handling system for a clothes hanger according to claim 1, characterized in that... The gripping arm assembly includes a movable base plate, a base plate moving mechanism, and a first gripping frame vertically fixed on the movable base plate. The movable base plate is moved along the inward and outward directions by the base plate moving mechanism and is mounted on a movable base in the part-taking moving mechanism. A plurality of the first gripping fixtures are fixedly mounted on the first gripping frame facing outwards from the flipping mechanism.

3. The stacking and side-loading material handling system for a clothes hanger according to claim 2, characterized in that... The first gripping frame includes a first base side plate, a second base side plate, multiple fixture fixing tubes, at least two reinforcing rods, and a side reinforcement plate. The first base side plate and the second base side plate are respectively vertically and parallelly fixedly installed at the front and rear ends of the movable base plate. The multiple fixture fixing tubes are arranged from top to bottom, and each fixture fixing tube passes horizontally from front to back through a positioning hole provided on the first base side plate and is fixedly connected to the second base side plate. The at least two reinforcing rods are arranged vertically from front to back and fixedly installed on the outside of the multiple fixture fixing tubes. The side reinforcement plate is fixedly installed on the outside of the at least two reinforcing rods along the front-back direction and is fixedly connected to the first base side plate and the second base side plate respectively. The first gripping fixture is fixedly installed on two adjacent fixture fixing tubes facing the outside of the flipping mechanism. When there are two or more rows of the first gripping fixtures along the vertical direction, each row of the first gripping fixtures is located on two different fixture fixing tubes.

4. The stacking and side-loading material handling system for a clothes hanger according to claim 3, characterized in that... The first clamping fixture includes a first fixture plate and a plurality of first pneumatic clamps. The first fixture plate is fixedly disposed on the outside of two adjacent fixture fixing tubes, and the plurality of first pneumatic clamps are respectively fixedly disposed at preset clamping positions on the first fixture plate.

5. A stacking and side-loading material handling system for a clothes hanger according to claim 2, characterized in that... The picking and moving mechanism further includes a moving spindle, a conveyor belt, and a pulley drive assembly. The moving spindle is fixedly mounted on the frame platform in the front-back direction. The pulley drive assembly is used to drive the conveyor belt to move the moving base in the front-back direction on the moving spindle. Two rows of first slide rail slider moving assemblies are arranged between the moving base and the moving spindle in the front-back direction.

6. The stacking and side-loading material handling system for a clothes hanger according to claim 2, characterized in that... The receiving and clamping fixture includes a second clamping frame and multiple second clamping fixtures. The second clamping frame includes a flipping connecting frame and a clamping frame body. The flipping mechanism is used to drive the flipping connecting frame to flip. The material discharging displacement mechanism is disposed between the flipping mechanism and the flipping connecting frame. The clamping frame body is vertically fixedly disposed at the bottom of the flipping connecting frame in a downward flipped state. The second clamping fixture includes a second fixture plate and multiple second pneumatic clamps. The second fixture plate is fixedly disposed on the clamping frame body. The multiple second pneumatic clamps are respectively fixedly disposed at preset clamping positions on the second fixture plate.

7. A stacking and side-loading material handling system for a clothes hanger according to claim 6, characterized in that... The flipping mechanism includes two flipping uprights, one flipping shaft, two flipping plates, and two flipping drive cylinders. The two flipping uprights are vertically fixed on the front and rear sides of the unloading position of the machine frame, respectively. The flipping shaft is horizontally arranged between the two flipping uprights along the front-back direction. The rear end of the flipping shaft is rotatably connected to the flipping upright located on the rear side. The middle parts of the two flipping plates are rotatably arranged on the front and rear parts of the flipping shaft, respectively. The bottom of each flipping drive cylinder is rotatably connected to the bottom of the corresponding flipping upright along the inward and outward direction. The top end of the drive rod of the flipping drive cylinder is rotatably connected to the rotating pin fixed on the outer end of the flipping plate through a floating joint. The material feeding displacement mechanism includes a rotation drive assembly and two sets of displacement transmission assemblies. The rotation drive assembly is arranged on any one of the flipping uprights and is used to control the rotation state of the flipping shaft. Each flipping shaft controls the up-and-down movement of the flipping connecting frame when it is in the downward flipping state through a set of displacement transmission assemblies. The inner end of the flipping plate is slidably connected to the upper part of the flipping connecting frame when it is in the downward flipping state through a second slide rail slider moving assembly.

8. A stacking and side-loading material handling system for a clothes hanger according to claim 7, characterized in that... The rotation drive assembly includes a displacement drive motor, a reducer, a transmission belt, and a transmission wheel. The displacement transmission assembly includes a tension wheel, two idler wheels, and a displacement drive belt. The reducer is fixedly mounted rearward at the front of the tilting stand located on the front side. The displacement drive motor drives one end of the transmission belt to rotate through the reducer. The transmission wheel is coaxially fixedly sleeved on the front end of the tilting shaft. The other end of the transmission belt is wound around the transmission wheel and drives the transmission wheel to rotate. The rear end of the tilting shaft is rotatably connected to the tilting stand located on the rear side. The upper end of the displacement drive belt is fixedly connected to the upper outer side of the tilting connecting frame through an upper fixing block. The lower end of the displacement drive belt is fixedly connected to the lower outer side of the tilting connecting frame through a lower fixing block. The tension wheel is fixedly sleeved on the tilting shaft. The displacement drive belt is tensioned and wound around the outer surface of the tension wheel. The two idler wheels are respectively located above and below the tension wheel and are rotatably connected to the tilting plate. The idler wheels roll and press against the outer side of the displacement drive belt.

9. A stacking and side-loading material handling system for a clothes hanger according to claim 1, characterized in that... The material handling mechanism includes two symmetrically arranged material handling platforms, a material handling pallet set on the material handling platforms, and a pallet moving mechanism. Each material handling platform is fixedly arranged from the bottom space of the flipping mechanism on the corresponding side outward. The pallet moving mechanism drives the material handling pallet to move in the inward and outward directions on the material handling platform.

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