Vertical injection molding machine

Abstract

The utility model discloses a vertical injection molding machine and belongs to the technical field of injection molding machines. The injection molding machine comprises: a host provided with a lifting area, the bottom and top of which are respectively provided with a bottom plate and a top plate; the hydraulic station is arranged on the side face of the main machine and comprises a hydraulic cylinder arranged below the bottom plate. The lifting assembly comprises lower supports arranged on the two sides of the bottom plate respectively. The upper support and the lower support are oppositely arranged on the two sides of the top plate respectively; the first connecting rods are rotationally connected with the lower supports respectively; one end of the second connecting rod is rotationally connected with the upper support, and the other end is rotationally connected with the first connecting rod downwards; one end of the third connecting rod is rotationally connected with one ends connected with the first connecting rod and the second connecting rod; two sides of the connecting seat are respectively connected with one end, far away from the second connecting rod, of the third connecting rod; a piston rod of the hydraulic cylinder upwards penetrates through the bottom plate and is connected with the connecting seat. The hydraulic cylinder drives the lifting assembly to ascend or retract, so that the movable mold ascends and descends along with the top plate, and the mold locking device has the characteristics of stable mold locking, high speed and long service life.

Description

Technical Field

[0001] This utility model belongs to the field of injection molding machine technology, specifically relating to a vertical injection molding machine. Background Technology

[0002] Injection molding machines, also known as injection molding machines, are mainly used for the production of artificial plant flowers and leaves through screen printing. The artificial plant flowers, leaves, and skeleton are placed into a mold, hot-pressed, cooled and shaped, and then the mold is opened to obtain the finished product. In this process, pneumatic or hydraulic systems are typically used to directly move the moving mold up and down to lock or open the mold.

[0003] For example, Chinese patent document CN209851445U discloses a bone-splitting machine equipped with a robotic arm and an intelligent safety system. This utility model includes a support frame, a guide rail welded to the support frame, an upper and lower template slidably connected to the guide rail, a push plate slidably connected to the guide rail, a safety photoelectric sensor screwed to the support frame, and a robotic arm device placed on one side of the support frame. A first cylinder is connected to the top of the support frame, and the piston rod of the first cylinder is fixedly connected to the upper template. A top mold device is welded to the push plate near the lower template. The top mold device includes top mold holes on the upper and lower templates, with a top mold rod threaded into the top mold holes. The robotic arm is located between the upper and lower templates. This utility model can control the robotic arm's material handling via the safety photoelectric sensor, replacing manual operation and reducing the risk of danger to humans during operation of the bone-splitting machine.

[0004] The new mold is driven up and down by a cylinder, but there are problems such as air leakage, unstable pressure and high energy consumption of the air compressor during the use of the cylinder. Utility Model Content

[0005] This utility model provides a vertical injection molding machine to solve the technical problems such as air / oil leakage and unstable pressure that exist in existing injection molding machines / bone injection machines where the lifting of the moving mold is directly driven by the pneumatic or hydraulic system.

[0006] To solve the above technical problems, the present invention adopts the following technical solution:

[0007] A vertical injection molding machine includes: a main unit with a lifting area, wherein a base plate and a top plate are fixed to the main unit at the bottom and top of the lifting area, respectively; a hydraulic station located on the side of the main unit, including a hydraulic cylinder located below the base plate; a lifting assembly including: a lower support located on both sides of the base plate; an upper support located on both sides of the top plate opposite to the lower support; a first connecting rod rotatably connected to the lower support; a second connecting rod having one end rotatably connected to the upper support and the other end rotatably connected downward to the first connecting rod; a third connecting rod having one end rotatably connected to the ends of the first and second connecting rods respectively; a connecting seat located on the base plate, with both sides connected to the ends of the third connecting rod away from the second connecting rod; and the piston rod of the hydraulic cylinder extending upward through the base plate and connected to the connecting seat.

[0008] Furthermore, the height of the lower support is greater than the height of the upper support; the height of the lower support is greater than the height of the first connecting rod and the third connecting rod.

[0009] Furthermore, the lower support, the upper support, the first connecting rod, the second connecting rod, the third connecting rod, and the connecting seat are respectively arranged symmetrically about the extension line of the piston rod of the hydraulic cylinder.

[0010] Furthermore, the length of the second link is greater than the lengths of the first link and the third link.

[0011] Furthermore, the lifting assembly also includes: two guide rods, each disposed on the base plate; the two ends of the connecting seat that are not connected to the third connecting rod are respectively movably connected to the guide rods.

[0012] Furthermore, the guide rod is located on both sides of the line connecting the two lower supports; the height of the guide rod is less than the height of the lifting area.

[0013] Furthermore, the lifting assembly also includes: a limiting plate, with both ends disposed on the main unit and at the top of the guide rod; the limiting plate is located above the connecting seat, and the two are arranged parallel to each other.

[0014] Furthermore, the lifting assembly also includes a controller, which is mounted on a bracket on the side of the base plate; the controller is connected to the hydraulic station for control.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this novel lifting assembly, the lower support, upper support, first connecting rod, second connecting rod, third connecting rod, and connecting seat are connected by a rotatable connection. The operation of the hydraulic cylinder causes the piston rod to rise or fall, thereby driving the lifting assembly to rise or retract, raising or lowering the top plate, and thus moving the moving mold accordingly. In this way, a smaller hydraulic cylinder can be used to drive the moving mold, which has the characteristics of stable mold locking, fast speed, long service life, and low energy consumption. It avoids the problems of unstable pressure and high energy consumption of air compressors when directly using a pneumatic system to drive the moving mold, and the problems of oil leakage and slow speed when using a hydraulic system to drive the moving mold.

[0017] 2. When the connecting seat is running, it can slide up and down along the length of the guide rod, which can improve the stability of operation; the limit plate is set to limit the height of the connecting seat to ensure its safe operation.

[0018] 3. The controller is set up to control the lifting components by controlling the hydraulic station, which facilitates operation and stopping as needed, and improves the ease of use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is the front view of the present invention.

[0021] Figure 2 This is a left view of the present invention (the bracket is omitted).

[0022] Figure 3 for Figure 2 A magnified view of part A.

[0023] Figure 4 This is a schematic diagram showing the connection of the first link, the second link, and the third link.

[0024] Figure 5 This is a top view of the connector.

[0025] Reference numerals: 1-Main unit, 11-Lifting area, 12-Base plate, 13-Top plate, 14-Bracket, 2-Hydraulic station, 21-Hydraulic cylinder, 3-Lifting assembly, 31-Lower support, 32-Upper support, 33-First link, 34-Second link, 35-Third link, 36-Connecting seat, 37-Guide rod, 38-Limit plate, 39-Controller. Detailed Implementation

[0026] To facilitate a better understanding of this utility model, the following examples are provided in conjunction with the accompanying drawings. These examples fall within the protection scope of this utility model, but do not limit the protection scope of this utility model.

[0027] Example 1

[0028] A vertical injection molding machine, such as Figures 1-5 As shown, it includes: a main unit 1, which has a lifting area 11, with a base plate 12 and a top plate 13 fixed to the main unit 1 at the bottom and top of the lifting area 11, respectively; a hydraulic station 2, located on the side of the main unit 1, including: a hydraulic cylinder 21, located below the base plate 12; a lifting assembly 3, including: a lower support 31, located on both sides of the base plate 12; an upper support 32, located on both sides of the top plate 13 opposite to the lower support 31; a first connecting rod 33, rotatably connected to the lower support 31; a second connecting rod 34, one end of which is rotatably connected to the upper support 32, and the other end of which is rotatably connected downward to the first connecting rod 33; a third connecting rod 35, one end of which is rotatably connected to the ends of the first connecting rod 33 and the second connecting rod 34; a connecting seat 36, located on the base plate 12, with both sides connected to the ends of the third connecting rod 35 away from the second connecting rod 34; and the piston rod of the hydraulic cylinder 21 extending upward through the base plate 12 and connected to the connecting seat 36.

[0029] The main unit includes a moving mold and a fixed mold. The moving mold is set on the top plate and can move with the movement of the top plate. The fixed mold is set above the moving mold. The fixed mold is fixedly installed. When the mold is locked, the moving mold moves toward the fixed mold. When the mold is opened, the moving mold moves away from the fixed mold.

[0030] The hydraulic power unit includes hydraulic cylinders, as well as existing components such as hydraulic oil pumps and hydraulic oil tanks, to meet the normal operation requirements of the hydraulic power unit.

[0031] The first connecting rod and the lower support, the second connecting rod and the upper support, the first connecting rod and the second connecting rod, the third connecting rod and the first and second connecting rods, and the connecting seat and the third connecting rod are all rotatably connected. This means that when the connecting seat is subjected to an upward thrust from the hydraulic cylinder, due to the rotatable connection, the force transmission will push the first and second connecting rods upwards, causing the top plate to rise and the moving mold to move towards the fixed mold. When the connecting seat is subjected to a downward pull from the hydraulic cylinder, due to the rotatable connection, the force transmission will cause the third connecting rod to pull the first and second connecting rods downwards, causing the first and second connecting rods to fold inwards, causing the top plate to move downwards and the moving mold to move away from the fixed mold.

[0032] Instructions for use: Place the product on the moving mold, start the hydraulic station, the piston rod of the hydraulic cylinder moves upward, driving the connecting seat to move upward. Through the action of the third connecting rod, the first and second connecting rods stand up, which in turn causes the upper support to move upward, thereby moving the moving mold toward the fixed mold for mold locking. After hot pressing, cool (water cool) to solidify the shape. Then the piston rod of the hydraulic cylinder moves downward, driving the connecting seat to move downward. Under the action of the third connecting rod, the first and second connecting rods fold inward, thus completing the mold opening operation.

[0033] Example 2

[0034] Compared with Example 1, the novel vertical injection molding machine also has the following technical features:

[0035] like Figures 1-4 As shown, the height of the lower support 31 is greater than the height of the upper support 32; the height of the lower support 31 is greater than the height of the first link 33 and the third link 35.

[0036] like Figures 1-4 As shown, the lower support 31, upper support 32, first connecting rod 33, second connecting rod 34, third connecting rod 35, and connecting seat 36 are respectively arranged symmetrically about the extension line of the piston rod of the hydraulic cylinder 21.

[0037] like Figures 1-4 As shown, the length of the second link 34 is greater than the lengths of the first link 33 and the third link 35.

[0038] When the hydraulic cylinder operates and the piston rod rises, the connecting seat of the lifting assembly is pushed and moves upward. Since the connecting seat is rotatably connected to the third link, the force it receives will act on the first and second links respectively. Because they are both rotatably connected, the first and second links will stand up, thereby pushing the top plate upward and driving the moving mold to move. When the mold is to be opened, the piston rod of the hydraulic cylinder retracts, the connecting seat is forced to move downward, causing the third link to move downward and pulling the first and second links to fold inward. Since the size of the connecting seat is not very large, and it is necessary to ensure that the first and second links on the left and right sides will not collide after folding, the length of the lower support and the second link can be set to be relatively long, while the length of the first and third links can be set to be relatively short.

[0039] Example 3

[0040] Compared with Example 2, the novel vertical injection molding machine also has the following technical features:

[0041] like Figures 1-3 As shown, the lifting assembly 3 also includes: two guide rods 37, which are respectively mounted on the base plate 12; the two ends of the connecting seat 36 that are not connected to the third connecting rod 35 are respectively movably connected to the guide rods 37.

[0042] like Figures 1-3As shown, the guide rod 37 is located on both sides of the line connecting the two lower supports 31; the height of the guide rod 37 is less than the height of the lifting area 11.

[0043] like Figures 1-3 As shown, the lifting assembly 3 also includes: a limiting plate 38, with both ends disposed on the main unit 1 and at the top of the guide rod 37; the limiting plate 38 is located above the connecting seat 36, and the two are arranged parallel to each other.

[0044] like Figure 2 As shown, the lifting assembly 3 also includes a controller 39, which is mounted on a bracket 14 on the side of the base plate 12; the controller 39 is connected to the hydraulic station 2 for control.

[0045] The bottom of the connecting seat is connected to the piston rod of the hydraulic cylinder. When the hydraulic cylinder is running, the connecting seat will also move up and down due to the lifting and lowering of the piston rod, which in turn drives the first connecting rod, the second connecting rod, and the third connecting rod to move. To ensure the stable movement of the connecting seat, a guide rod is provided.

[0046] To ensure the safe operation of the connecting seat and prevent it from hitting the moving mold due to excessive lifting height, a limiting plate is provided at the top of the guide rod. This allows the connecting seat to move up and down in the area between the limiting plates.

[0047] Since the injection molding machine requires operator control during operation, a bracket is installed on one side of the base plate, and the controller is placed on top of the bracket; this ensures that the controller is at a suitable height, making it easy for the operator to control the operation of the hydraulic station.

[0048] The main unit can also be equipped with existing feeding systems and water cooling systems as needed. The feeding system includes a hopper, which feeds materials into the melting cylinder via a motor-driven screw feeder. The lower end of the melting cylinder is electrically heated to melt the materials, and the melted materials are pushed into the mold by another hydraulic cylinder on top of the main unit. The water cooling system is used for cooling the top of the melting cylinder (to prevent all the materials in the melting cylinder from being heated and melting, which would cause the melted materials to flow upwards when the hydraulic cylinder pushes downwards, affecting normal production), and for cooling and shaping after mold locking.

[0049] The hydraulic system, hydraulic cylinder, controller, etc. involved in this application are not the innovations of this invention. Specific models are not described here. The above components adopt existing connection and installation methods.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vertical injection molding machine characterized by, include: The main unit (1) is provided with a lifting area (11), and the bottom and top of the lifting area (11) are respectively provided with a bottom plate (12) and a top plate (13) fixed on the main unit (1). A hydraulic station (2), located on the side of the main unit (1), includes: A hydraulic cylinder (21) is located below the base plate (12); The lifting assembly (3) includes: The lower supports (31) are respectively located on both sides of the base plate (12); The upper support (32) is disposed on both sides of the top plate (13) opposite to the lower support (31); The first connecting rod (33) is rotatably connected to the lower support (31); The second link (34) has one end rotatably connected to the upper support (32) and the other end rotatably connected downward to the first link (33); The third link (35) is rotatably connected at one end to the end that is connected to the first link (33) and the second link (34) respectively; The connecting seat (36) is provided on the base plate (12), and its two sides are respectively connected to the end of the third connecting rod (35) away from the second connecting rod (34); The piston rod of the hydraulic cylinder (21) extends upward through the base plate (12) and is connected to the connecting seat (36).

2. A vertical injection molding machine according to claim 1, wherein The height of the lower support (31) is greater than the height of the upper support (32); The height of the lower support (31) is greater than the height of the first connecting rod (33) and the third connecting rod (35).

3. A vertical injection molding machine according to claim 2, wherein The lower support (31), the upper support (32), the first connecting rod (33), the second connecting rod (34), the third connecting rod (35), and the connecting seat (36) are respectively arranged symmetrically about the extension line of the piston rod of the hydraulic cylinder (21).

4. A vertical injection molding machine according to claim 3, wherein The length of the second link (34) is greater than the lengths of the first link (33) and the third link (35).

5. A vertical injection molding machine according to any one of claims 1-4, characterized in that The lifting assembly (3) also includes: There are two guide rods (37), which are respectively installed on the base plate (12); The two ends of the connecting seat (36) that are not connected to the third link (35) are movably connected to the guide rod (37).

6. A vertical injection molding machine according to claim 5, characterized in that, The guide rod (37) is located on both sides of the line connecting the two lower supports (31); The height of the guide rod (37) is less than the height of the lifting area (11).

7. A vertical injection molding machine according to claim 6, wherein The lifting assembly (3) also includes: The limiting plate (38) is located on the host (1) at both ends and at the top of the guide rod (37); The limiting plate (38) is located above the connecting seat (36), and the two are arranged parallel to each other.

8. A vertical injection molding machine according to claim 7, wherein The lifting assembly (3) also includes: The controller (39) is mounted on the bracket (14) on the side of the base plate (12); The controller (39) is connected to the hydraulic station (2) for control.

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