Multi-station injection molding machine

Abstract

A multi-station injection molding machine is provided with a shell feeding station, a pin feeding station, a plastic powder feeding station, and an injection molding station along the mold conveying device on the frame; each set of molds includes a matching upper template and a lower template. A number of shell placement grooves arranged in an array are formed on the upper template, and a number of pin placement grooves arranged in an array are formed on the lower template, and the shell placement grooves and the pin placement grooves are arranged correspondingly; a first lifting device and a shell feeding device are provided at the shell feeding station, a pin feeding device is provided at the pin feeding station, a third lifting device and a plastic powder feeding device are provided at the plastic powder feeding station, and a translation device and an injection molding device are provided at the injection molding station. With the above scheme, the full-automatic forming operation of the lamp holder can be realized, the degree of automation is high, manual operation is greatly reduced, the working intensity is reduced, the labor cost is lowered, and at the same time, the working efficiency can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automated equipment, and particularly relates to a multi-station injection molding machine. Background Art

[0002] As Figure 1 shown, it is a socket structure of an H7 automotive lamp holder, which includes a socket housing 1a and two pins 2a. The socket housing 1a and the two pins 2a are connected into an integral structure through an injection molding body 3a. Among them, a locking tooth is formed on the socket housing 1a.

[0003] When producing the socket of the above-mentioned H7 automotive lamp holder, usually the socket housing and the pins are manually placed in the mold in sequence, then plastic powder is poured into the mold, and finally it is placed in the corresponding equipment for heating and forming.

[0004] However, in the above production method, there are many manual operation steps, which not only have a large working intensity, high labor cost, but also low working efficiency. Therefore, there is an urgent need for an automated equipment to replace manual operation to achieve the full-automatic production of the above socket, reduce costs and improve working efficiency. Summary of the Invention

[0005] In order to overcome the deficiencies of the background art, the present invention provides a multi-station injection molding machine.

[0006] The technical solution adopted by the present invention: A multi-station injection molding machine includes a frame, at least two groups of molds, and a mold conveying device. Along the mold conveying device on the frame, there are respectively provided a housing feeding station, a pin feeding station, a plastic powder feeding station, and an injection molding station;

[0007] Each group of molds includes a matching upper template and a lower template. A number of shell placement grooves arranged in an array are formed on the upper template, and a number of pin placement grooves arranged in an array are formed on the lower template, and the shell placement grooves and the pin placement grooves are correspondingly arranged;

[0008] The mold conveying device includes a feeding tray and a conveying mechanism capable of driving the feeding tray to horizontally move along the X-axis direction. The feeding tray is used to support and convey the molds;

[0009] At the housing feeding station, there is a first lifting device and a housing feeding device. The first lifting device can lift the upper template to separate the upper template from the lower template, and the housing feeding device is used to sequentially place the housings in the housing placement grooves of the upper template;

[0010] At the pin feeding station, there is a pin feeding device. The pin feeding device is used to sequentially place the pins in the pin placement grooves of the lower template;

[0011] At the plastic powder feeding station, a third lifting device and a plastic powder feeding device are provided. The third lifting device can lift the mold to make it fit with the plastic powder feeding device, and the plastic powder feeding device is used to add plastic powder into the mold;

[0012] At the injection molding station, a translation device and an injection molding device are provided. The translation device can translate the mold from the feeding tray to the injection molding device, and the injection molding device is used to fix and mold the plastic powder in the mold.

[0013] The housing feeding device includes:

[0014] A housing feeding assembly for automatically sorting and feeding the housings;

[0015] A housing dividing plate is arranged at the end of the housing feeding assembly. The housing dividing plate is connected to a first power source that can drive it to move horizontally, and a number of evenly distributed housing dividing grooves are formed on the side of the housing dividing plate facing the housing feeding assembly;

[0016] A housing orientation selection assembly, which corresponds to the housing dividing plate and is used to rotate and orient the housings in the housing dividing grooves;

[0017] A housing clamping assembly for simultaneously clamping all the housings on the housing dividing plate and transferring them to the housing placement groove of the upper template.

[0018] At the housing feeding station, a finished product collection box is also provided. The housing clamping assembly can also be used to clamp the finished products in the housing placement groove and transfer them to the finished product collection box.

[0019] The housing orientation selection assembly includes:

[0020] A translation platform, which is connected to a second power source that can drive it to move horizontally;

[0021] A number of evenly spaced orientation selection cards are installed on one side of the translation platform close to the housing dividing plate;

[0022] A number of evenly spaced rotating rods are rotatably installed on the translation platform and are connected to a rotating power source that can drive them to rotate;

[0023] A lifting platform is located below the housing dividing plate and is connected to a third power source that drives it to lift and lower;

[0024] A number of evenly spaced support rods are rotatably installed on the lifting platform and correspond to the housing dividing grooves of the housing dividing plate.

[0025] The pin feeding device includes:

[0026] Two sets of juxtaposed pin feeding components for automatic sorting and feeding of pins;

[0027] A pin sorting component, which is arranged at the ends of the two sets of pin feeding components and includes two displacement plates and an intermediate plate arranged between the two displacement plates. On the inner wall of one side of the displacement plate facing the intermediate plate, pin sorting grooves adapted to the pins are evenly arranged at intervals. The two displacement plates are connected by a connecting plate and are connected with a fifth power source capable of driving them to move horizontally;

[0028] A pin clamping component for simultaneously clamping all the pins on the pin sorting component and transferring them to the pin placement grooves on the lower template.

[0029] The plastic powder feeding device includes:

[0030] A plastic powder tray, on which discharge holes corresponding to the placement grooves of the upper template housing are arranged in an array,

[0031] A closing plate, on which through holes corresponding to the discharge holes are arranged in an array. The closing plate is connected with a seventh power source capable of driving it to move horizontally. The closing plate has an open position aligned with the discharge holes and a closed position misaligned with the discharge holes;

[0032] A hopper, which is installed above the plastic powder tray, and a closable gate is provided at the lower outlet thereof;

[0033] A movable powder box, which is located between the hopper and the closing plate and is connected with an eighth power source for driving it to move horizontally.

[0034] Vibrators are provided on both the hopper and the movable powder box.

[0035] A second lifting device is further provided at the housing feeding station, and the second lifting device can lift the lower template to separate the lower template from the feeding tray.

[0036] The working steps of the above multi-station injection molding machine are as follows:

[0037] Step 1: The mold is placed on the first feeding tray. The mold conveying device first conveys the mold to the housing feeding station, then the first lifting device acts to lift the upper template, so that the upper template is separated from the lower template. Finally, the housing feeding device acts to sequentially place the housings into the housing placement grooves of the upper template;

[0038] Step 2: After the upper template is lifted and separated from the lower template, the mold conveying device immediately acts to convey the lower template to the pin feeding station, and then the pin feeding device acts to sequentially place the pins into the pin placement grooves of the lower template;

[0039] Step 3: After the shell and the pins are fed, the mold conveying device moves to convey the lower mold to the shell feeding station, and then the second lifting device is actuated to lift the lower mold and close the mold with the upper mold. At the same time, the mold conveying device moves to move the second feeding tray to the shell feeding station, and the closed mold is placed on the second feeding tray;

[0040] Step 4: After the mold is closed, the mold conveying device conveys the mold to the plastic powder feeding station, and then the third lifting device lifts the entire template so that it docks with the discharge hole of the plastic powder tray, and the plastic powder feeding device adds plastic powder;

[0041] Step 5: After the plastic powder is added, the third lifting device places the mold back on the feeding tray, and then the mold conveying device moves to the injection molding station, and the translation device pulls the mold into the injection molding device for injection molding;

[0042] Step 6. After the product is formed, the translation device returns the mold to the first feeding tray, and then the mold conveying device conveys the mold to the shell feeding station. While the shell is being fed, the product is unloaded simultaneously, and the above steps are repeated.

[0043] The beneficial effects of the present invention are as follows: by adopting the above scheme, the fully automatic forming operation of the lamp holder can be realized, the degree of automation is high, manual operation is greatly reduced, work intensity is reduced, labor costs are reduced, and work efficiency can be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 The figure is a schematic diagram of the structure of a lamp holder in an H7 automobile lamp cap.

[0045] Figure 2 It is a schematic structural diagram of a multi-station injection molding machine according to an embodiment of the present invention.

[0046] Figures 3 - 4 It is a structural schematic diagram of a mold according to an embodiment of the present invention.

[0047] Figure 5 It is a schematic structural diagram of a mold conveying device according to an embodiment of the present invention.

[0048] Figure 6 It is a schematic structural diagram of a shell feeding device according to an embodiment of the present invention.

[0049] Figure 7 It is a schematic structural diagram of the shell dividing plate of an embodiment of the present invention.

[0050] Figure 8 It is a structural schematic diagram of the shell direction selection component according to an embodiment of the present invention.

[0051] Figure 9 It is a schematic structural diagram of a first lifting device according to an embodiment of the present invention.

[0052] Figure 10 This is a schematic structural diagram of the pin feeding device according to an embodiment of the present invention.

[0053] Figures 11 - 12 This is a schematic structural diagram of the pin sorting assembly according to an embodiment of the present invention.

[0054] Figures 13 - 15 This is a schematic structural diagram of the plastic powder feeding station according to an embodiment of the present invention.

[0055] Figure 16 This is a schematic structural diagram of the injection molding device according to an embodiment of the present invention.

[0056] Figure 17 is Figure 16 an enlarged schematic view of part A in Detailed Embodiments

[0057] The following further describes the embodiments of the present invention with reference to the accompanying drawings.

[0058] As Figure 2 shown, a multi-station injection molding machine includes a frame 1, two sets of molds, and a mold conveying device 3. Along the mold conveying device on the frame, a housing feeding station, a pin feeding station, a plastic powder feeding station, and an injection molding station are respectively arranged. Among them, a housing feeding device 5 is provided at the housing feeding station, a pin feeding device 7 is provided at the pin feeding station, a plastic powder feeding device 9 is provided at the plastic powder feeding station, and an injection molding device 11 is provided at the injection molding station.

[0059] As Figures 3 - 4 shown, each set of molds 2 includes a matching upper template 21 and a lower template 22. A plurality of housing placement grooves 211 arranged in an array are formed on the upper template 21, and a plurality of pin placement grooves 221 arranged in an array are formed on the lower template 22. The upper template 21 and the lower template 22 can be positioned and matched by means of positioning holes and positioning columns. When the upper template 21 and the lower template 22 are positioned and matched, the housing placement grooves 211 and the pin placement grooves 221 correspond one by one.

[0060] Among them, the width of the upper template 21 is slightly larger than the width of the lower template 22. Upper support holes 213 are provided at both ends of the upper template 21 in the width direction, lower support holes 222 are provided at both ends of the lower template 22 in the width direction, and a translation block 212 is further provided at a position near one side of the upper end surface of the upper template 21.

[0061] As Figure 5As shown, the mold conveying device 3 includes a feeding tray 31 and a conveying mechanism 32. The conveying mechanism 32 adopts a screw-type linear module arranged along the X-axis direction, with stable operation and high precision. There are two feeding trays 31, which are installed side by side on the slider of the linear module and can move horizontally along the X-axis direction with the linear module. Specifically, two juxtaposed feeding trays 31 are formed by a number of template positioning strips 33 arranged along the X-axis direction.

[0062] The feeding tray 31 is used to support and convey the mold 2, and positioning is achieved through the template positioning strips 33 on the feeding tray 31. The template positioning strips 33 can restrict the movement of the mold 2 on the feeding tray 31 along the X-axis direction, while not restricting its movement along the Y-axis direction and lifting movement.

[0063] As Figures 6 - 9 shown, the housing feeding device 5 includes a housing feeding component 51, a housing dividing plate 52, a housing direction selection component 53, and a housing clamping component 54.

[0064] The housing feeding component 51 can specifically adopt a housing vibrating bowl and a housing feeding track. Through the housing vibrating bowl, the housings 1a can be sequentially sorted and fed along the Y-axis direction.

[0065] The housing dividing plate 52 is arranged at the end of the housing feeding component 51, and a number of uniformly distributed housing dividing grooves 521 are formed on the side of the housing dividing plate 52 facing the housing feeding component 51. Among them, the housing dividing plate 52 is connected to a first power source capable of driving it to move horizontally. The first power source can specifically adopt a cylinder-type linear module, which can drive the housing dividing plate 52 to reciprocate horizontally along the X-axis direction. Through the movement of the housing dividing plate 52 along the X-axis direction, each housing dividing groove 521 can be sequentially aligned with the housing feeding component 51, so that each housing dividing groove 521 receives a housing.

[0066] The housing direction selection component 53 corresponds to the housing dividing plate 52 and is used to rotate and select the direction of the housings in the housing dividing grooves 521. The housing direction selection component 53 includes a translation platform 531, a direction selection clamping plate 532, a rotating rod 533, a lifting platform 534, and a support rod 535.

[0067] The translation platform 531 is connected to a second power source capable of driving it to move horizontally. The second power source adopts a cylinder, which can drive the translation platform 531 to reciprocate horizontally along the Y-axis direction. A plurality of direction selection clamping plates 532 are provided and are evenly spaced on the side of the translation platform 531 close to the housing dividing plate 52, and the direction selection clamping plates 532 can correspond to the respective housing dividing grooves 521 on the housing dividing plate 52.

[0068] There are multiple rotating rods 533, which are evenly spaced and arranged on the extension plate of the translation platform 531, and are connected to a rotating power source that can drive the rotating rods 533 to rotate, and the rotating rods 533 can correspond to each shell material dividing groove 521 on the shell material dividing plate 52. Among them, gears are installed on each rotating rod 533, and the gears on adjacent rotating rods 533 are meshed. The rotating power source is a motor, and is connected to one of the gears through a gear transmission.

[0069] The lifting platform 534 is located below the shell dividing plate 52 and is connected to a third power source that drives its lifting action. The third power source uses a cylinder that can drive the lifting platform 534 to lift and lower. A plurality of support rods 535 are provided and are evenly spaced on the lifting platform 534. The support rods 535 are rotatably connected to the lifting platform 534 through bearings, and the support rods 535 can correspond to each shell dividing groove 521 on the shell dividing plate 52.

[0070] When selecting the direction, the shell dividing plate 52 moves to a position aligned with the shell direction selection component 53, and the second power source pushes the translation platform 531 to move toward the shell dividing plate 52, so that the rotating rod 533 is aligned with the shell dividing groove 521, and then the third power source pushes the lifting platform 534 to rise and contact the shell in the shell dividing groove 521, and makes the shell contact with the rotating rod 533, and finally the rotating power source drives the rotating rod 533 to rotate, and the rotating rod drives the shell to rotate. When the shell's latch teeth contact and limit the direction selection plate, the shell will no longer rotate with the rotating rod, thereby realizing the precise direction selection action of the shell.

[0071] The shell clamping assembly 54 includes a shell clamp and a first multi-axis moving module that drives the shell clamp to move multi-axis. The shell clamp can clamp all shells on the shell dividing plate 52 at the same time, and then transfer them to the shell placement groove 211 of the upper template 21 with the action of the first multi-axis moving module.

[0072] In addition, a first lifting device 4 is provided at the shell feeding station. When the mold conveying device 3 transfers the mold 2 to the shell feeding station, the upper mold plate 21 can be lifted by the first lifting device 4 to separate the upper mold plate 21 from the lower mold plate 22.

[0073] Among them, the first lifting device 4 includes a first lifting platform 41 and a fourth power source 42 for driving the lifting movement of the first lifting platform 41. The fourth power source 42 generally uses a cylinder. A number of first support rods 43 corresponding to the support holes on the upper template are further provided on the first lifting platform 41. A first positioning boss 44 adapted to the support hole is provided at the top of the first support rod 43. After the mold conveying device 3 transfers the mold 2 to the shell feeding station, the fourth power source 42 drives the first lifting platform 41 to rise, and the first positioning boss 44 at the top of the first support rod 43 is inserted into the support hole to position the upper template. Then, the first support rod 43 lifts the upper template 21 to separate the upper template 21 from the lower template 22.

[0074] As Figures 10 - 12 shown, the pin feeding device 7 includes two groups of pin feeding components 71, pin distributing components 72, and pin clamping components 73 arranged in parallel.

[0075] The pin feeding component 71 can specifically adopt a pin vibrating disk and a pin feeding track. Through the pin vibrating disk, the pins 2a can be sequentially sorted and fed along the X-axis direction.

[0076] The pin distributing component 72 is arranged at the end of the two groups of pin feeding components 71 and includes two displacement plates 721 and an intermediate plate 722 arranged between the two displacement plates 721. And on the inner wall of the side of the displacement plate 721 facing the intermediate plate 722, pin distributing grooves 723 adapted to the pins are evenly spaced. The two displacement plates 721 are connected into one body through a connecting plate 724 and are connected with a fifth power source capable of driving their translational movement. The fifth power source can specifically adopt a cylinder-type linear module, which can drive the two displacement plates 721 to horizontally reciprocate along the X-axis direction. Through the movement of the two displacement plates 721 along the X-axis direction, each pin distributing groove 723 can be sequentially aligned with the pin feeding component 71, and two pins can be respectively pushed into the pin distributing grooves 723. After the two displacement plates 721 receive the pins, they move towards the intermediate plate 722 direction, and the intermediate plate 722 restricts the pins in the pin distributing grooves 723 so that they will not fall.

[0077] The pin clamping component 73 includes a pin clamp and a second multi-axis movement module for driving the multi-axis movement of the pin clamp. The pin clamp can simultaneously clamp all the pins on the pin distributing component 72 and then move and transfer them to the pin placement groove 221 of the lower template 22 along with the second multi-axis movement module.

[0078] As Figures 13 - 15 shown, the plastic powder feeding device 9 includes a plastic powder tray 91, a closing plate 92, a hopper 93, and a movable powder box 94.

[0079] The powder tray 91 is arranged with discharge holes 911 corresponding to the placement grooves 211 of the upper template housing in an array. The closing plate 92 is arranged with through holes 921 corresponding to the discharge holes 911 in an array. The closing plate 92 is connected with a seventh power source, and the seventh power source is a cylinder, which can drive the closing plate 92 to move horizontally. The closing plate has an open position where the through hole 921 is aligned with the discharge hole 911 and a closed position where the through hole 921 is misaligned with the discharge hole 911. The hopper 93 is located above the powder tray 91, and a closable shutter 96 is provided at the lower outlet thereof. The movable powder box 94 is located between the hopper 93 and the closing plate 92 and is connected with an eighth power source, and the eighth power source is a cylinder, which can drive the movable powder box 94 to move horizontally along the closing plate 92.

[0080] Among them, vibrators 95 are provided on both the hopper 93 and the movable powder box 94.

[0081] When feeding the powder, first, the closing plate is in the closed position where the through hole 921 is misaligned with the discharge hole 911. The movable powder box 94 is located below the hopper 93. The hopper 93 stores powder. Under the action of the vibrator, the powder in the hopper will fall into the movable powder box 94. Then the shutter at the bottom of the hopper is closed, and at the same time, the movable powder box 94 moves. Under the action of the vibrator, the powder in the movable powder box 94 will fill the through hole 921 of the closing plate. When the mold conveying device 3 transfers the mold 2 to the powder feeding station, the closing plate moves to the open position where the through hole 921 is aligned with the discharge hole 911, and the powder in the through hole 921 correspondingly falls into the mold 2.

[0082] In addition, a third lifting device 8 is provided at the powder feeding station. When the mold conveying device 3 transfers the mold 2 to the powder feeding station, the third lifting device 8 can lift the mold 2 to dock it with the discharge hole 911 of the powder tray 91 to ensure accurate powder feeding.

[0083] Among them, the third lifting device 8 includes a third lifting platform 81 and a ninth power source 82 for driving the third lifting platform 81 to perform lifting actions. The ninth power source 82 generally adopts a cylinder. A number of third support rods 83 corresponding to the support holes on the upper template are also provided on the third lifting platform 81. A third positioning boss 84 adapted to the support hole is provided at the top of the third support rod 83. When the mold conveying device 3 transfers the mold 2 to the powder feeding station, the ninth power source 82 drives the third lifting platform 81 to rise, and the third positioning boss 84 at the top of the third support rod 83 is inserted into the lower support hole 222 of the lower template to realize mold positioning. Then the third support rod 83 lifts the whole mold and docks it with the discharge hole 911 of the powder tray 91.

[0084] Such as Figure 16As shown, the injection molding device 11 is a conventional existing technology and will not be introduced in detail here. Among them, a translation device 10 is provided at the injection molding station, which can translate the mold 2 from the feeding tray 31 to the injection molding device 11.

[0085] The translation device 10 includes a U-shaped push plate 101. The U-shaped push plate 101 is connected to a tenth power source, which is a cylinder and can drive the U-shaped push plate 101 to move horizontally along the Y-axis direction. After the addition of the housing, pins, and plastic powder, when the mold conveying device 3 transfers the mold 2 to the injection molding station, the translation block on the upper template can just slide into the U-shaped push plate 101. At this time, the tenth power source drives the U-shaped push plate 101 to act, and the mold 2 can be translated from the feeding tray 31 of the mold conveying device 3 to the injection molding device 11 for injection molding.

[0086] As Figures 6 - 9 shown, a second lifting device 6 is also provided at the housing feeding station. After the pins are installed on the lower template, the second lifting device 6 can lift the lower template 22 to separate the lower template 22 from the feeding tray 31 and realize the corresponding mold closing of the upper template and the lower template. Lifting the lower template can not only achieve accurate positioning and mold closing, but also facilitate adjusting the position of the mold on the mold conveying device 3, that is, transferring from one feeding tray to another, which is more conducive to the coordinated work of each device and improves work efficiency.

[0087] Among them, the second lifting device 6 includes two lifting plates 61. The lifting plates 61 are connected to a sixth power source for their lifting action. The sixth power source usually uses a cylinder. By driving the lifting plates 61 to rise through the sixth power source, the lower template 22 can be lifted by the lifting plates 61.

[0088] In addition, a finished product collection box 12 is also provided at the housing feeding station. The housing clamping assembly 54 can also be used to clamp the finished product in the housing placement groove 211 and transfer it to the finished product collection box 12.

[0089] The working process of the above multi-station injection molding machine is as follows:

[0090] Step 1: The mold is placed on the first feeding tray. The mold conveying device first conveys the mold to the housing feeding station, then the first lifting device acts to lift the upper template, separating the upper template from the lower template. Finally, the housing feeding device acts to sequentially place the housings into the housing placement grooves of the upper template.

[0091] Step 2: After the upper template is lifted and separated from the lower template, the mold conveying device immediately acts to convey the lower template to the pin feeding station, and then the pin feeding device acts to sequentially place the pins into the pin placement grooves of the lower template.

[0092] Step 3: After the housing and the pins are fed, the mold conveying device moves to convey the lower template to the housing feeding station. Then, the second lifting device operates to lift the lower template to close the mold with the upper template. At the same time, the mold conveying device moves to move the second feeding tray to the housing feeding station and place the closed mold on the second feeding tray.

[0093] Step 4: After the mold is closed, the mold conveying device conveys the mold to the plastic powder feeding station. Then, the third lifting device operates to lift the entire template so that it is docked with the discharge hole 911 of the plastic powder tray 91, and the plastic powder feeding device 9 adds plastic powder.

[0094] Step 5: After the plastic powder is added, the third lifting device places the mold back on the feeding tray. Then, the mold conveying device moves to the injection molding station, and the translation device pulls the mold into the injection molding device for injection molding.

[0095] Step 6: After the product is formed, the translation device sends the mold back to the first feeding tray. Then, the mold conveying device conveys the mold to the housing feeding station. While the housing is being fed, the product is discharged synchronously, and the above steps are repeated.

[0096] Adopting the above solution can achieve the full-automatic forming operation of the lamp holder, with a high degree of automation, greatly reducing manual operation, reducing the work intensity, lowering the labor cost, and at the same time greatly improving the work efficiency.

[0097] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0098] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, in the description of the present invention, unless otherwise stated, the meaning of "multiple" is two or more.

[0099] Notice to all technical personnel: Although the present invention has been described according to the above specific embodiments, the inventive concept of the present invention is not limited to this invention only. Any modification using the inventive concept of the present invention will be included in the scope of protection of the patent right of this patent.

Claims

1. A multi-station injection molding machine, comprising a frame (1), at least two sets of molds (2), and a mold conveying device (3). Along the mold conveying device (3) on the frame (1), there are respectively arranged a housing feeding station, a pin feeding station, a plastic powder feeding station, and an injection molding station; It is characterized in that: Each set of molds (2) includes a matching upper template (21) and a lower template (22). A number of housing placement grooves (211) arranged in an array are formed on the upper template (21), and a number of pin placement grooves (221) arranged in an array are formed on the lower template (22), and the housing placement grooves (211) and the pin placement grooves (221) are arranged in correspondence; The mold conveying device (3) includes two feeding trays (31) and a conveying mechanism (32) capable of driving the feeding trays (31) to move horizontally along the X-axis direction. The feeding trays (31) are used to support and convey the molds (2); At the housing feeding station, there are provided a first lifting device (4), a housing feeding device (5), and a second lifting device (6). The first lifting device (4) can lift the upper template (21) to separate the upper template (21) from the lower template (22). The housing feeding device (5) is used to sequentially place the housings in the housing placement grooves (211) of the upper template (21). The second lifting device (6) can lift the lower template (22) after the pins are installed on the lower template, separate the lower template (22) from the feeding tray (31), and realize the corresponding mold closing of the upper template and the lower template; At the pin feeding station, there is provided a pin feeding device (7). The pin feeding device (7) is used to sequentially place the pins in the pin placement grooves (221) of the lower template (22); At the plastic powder feeding station, there are provided a third lifting device (8) and a plastic powder feeding device (9). The third lifting device (8) can lift the mold (2) to make it fit with the plastic powder feeding device (9). The plastic powder feeding device (9) is used to add plastic powder into the mold (2); At the injection molding station, there are provided a translation device (10) and an injection molding device (11). The translation device (10) can translate the mold (2) from the feeding tray (31) to the injection molding device (11). The injection molding device (11) is used to fix and mold the plastic powder in the mold; 2. The multi-station injection molding machine according to claim 1, wherein: The housing feeding device (5) includes: A housing feeding assembly (51) for automatically sorting and feeding the housings; A housing dividing plate (52) which is arranged at the end of the housing feeding assembly (51). The housing dividing plate (52) is connected with a first power source capable of driving it to move horizontally, and a number of uniformly distributed housing dividing grooves (521) are formed on the side of the housing dividing plate (52) facing the housing feeding assembly (51); A housing direction selection assembly (53) which corresponds to the housing dividing plate (52) and is used to rotate and select the direction of the housings in the housing dividing grooves (521); A housing clamping assembly (54) for simultaneously clamping all the housings on the housing dividing plate (52) and transferring them into the housing placement grooves (211) of the upper template (21).

3. The multi-station injection molding machine according to claim 2, characterized in that: A finished product collection box (12) is also provided at the shell feeding station. The shell clamping assembly (54) can be used to clamp the finished products in the shell placement groove (211) and transfer them into the finished product collection box (12).

4. The multi-station injection molding machine according to claim 2, wherein: The shell orientation component (53) includes: A translation platform (531) connected to a second power source capable of driving it to move horizontally; A number of orientation cards (532) arranged at equal intervals, which are installed on one side of the translation platform (531) close to the shell distribution plate (52); A number of rotating rods (533) arranged at equal intervals, which are rotatably installed on the translation platform (531) and connected to a rotating power source capable of driving them to rotate; A lifting platform (534) located below the shell distribution plate (52) and connected to a third power source for driving its lifting movement; a number of support rods (535) arranged at equal intervals, which are rotatably installed on the lifting platform (534) and correspond to the shell distribution grooves (521) of the shell distribution plate (52).

5. The multi-station injection molding machine according to claim 1, characterized in that: The pin feeding device (7) includes: Two groups of juxtaposed pin feeding components (71) for automatic sorting and feeding of pins; A pin distribution component (72) provided at the end of the two groups of pin feeding components (71), including two displacement plates (721) and an intermediate plate (722) arranged between the two displacement plates (721). The inner walls of the displacement plates (721) facing the intermediate plate (722) are evenly spaced with pin distribution grooves (723) adapted to the pins. The two displacement plates (721) are connected by a connecting plate (724) and connected to a fifth power source capable of driving them to move horizontally; A pin clamping assembly (73) for simultaneously clamping all the pins on the pin distribution component (72) and transferring them into the pin placement groove (221) of the lower template (22).

6. The multi-station injection molding machine according to claim 1, characterized in that: The plastic powder feeding device (9) includes: A plastic powder tray (91) on which discharge holes (911) are arranged in an array corresponding to the shell placement grooves (211) of the upper template; A closing plate (92) on which through holes corresponding to the discharge holes (911) are arranged in an array. The closing plate (92) is connected to a seventh power source capable of driving it to move horizontally. The closing plate has an open position aligned with the discharge holes (911) and a closed position misaligned with the discharge holes (911); A hopper (93) installed above the plastic powder tray (91), and a closable gate (96) is provided at the lower outlet thereof; A movable powder box (94) located between the hopper (93) and the closing plate (92) and connected to an eighth power source for driving it to move horizontally.

7. The multi-station injection molding machine according to claim 6, characterized in that: Vibrators (95) are provided on both the hopper (93) and the movable powder box (94).

8. The multi-station injection molding machine according to claim 1, wherein: Its working steps are as follows: Step 1: The mold is placed on the first feeding tray. The mold conveying device first conveys the mold to the shell feeding station, then the first lifting device operates to lift the upper template, so that the upper template is separated from the lower template. Finally, the shell feeding device operates to sequentially place the shells into the shell placement grooves of the upper template; Step 2: After the upper mold plate is lifted and separated from the lower mold plate, the mold conveying device immediately operates to convey the lower mold plate to the pin feeding station, and then the pin feeding device operates to place the pins in the pin placement groove of the lower mold plate in sequence; Step 3: After the shell and the pins are fed, the mold conveying device moves to convey the lower mold to the shell feeding station, and then the second lifting device is actuated to lift the lower mold and close the mold with the upper mold. At the same time, the mold conveying device moves to move the second feeding tray to the shell feeding station, and the closed mold is placed on the second feeding tray; Step 4: After the mold is closed, the mold conveying device conveys the mold to the plastic powder feeding station, and then the third lifting device lifts the entire template so that it docks with the discharge hole of the plastic powder tray, and the plastic powder feeding device adds plastic powder; Step 5: After the plastic powder is added, the third lifting device places the mold back on the feeding tray, and then the mold conveying device moves to the injection molding station, and the translation device pulls the mold into the injection molding device for injection molding; Step 6. After the product is formed, the translation device returns the mold to the first feeding tray, and then the mold conveying device conveys the mold to the shell feeding station. While the shell is being fed, the product is unloaded simultaneously, and the above steps are repeated.

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