Electric injection mechanism driven by synchronous belt
By using an integrated injection head plate and side plate structure, combined with synchronous belt drive, the problems of high assembly difficulty and low precision in traditional injection molding mechanisms are solved, realizing a high-precision and miniaturized electric injection mechanism design.
Patent Information
- Application Number
- CN202423271162.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional injection molding mechanisms have a large number of parts, making assembly difficult. Assembly errors affect accuracy, resulting in decreased injection precision and a larger size.
The design employs a one-piece injection molding head plate, tail plate, and side plate structure, combined with synchronous belt drive, which reduces assembly difficulty and assembly errors, while optimizing the slide rail position to reduce the overall volume.
It improves injection precision, reduces assembly difficulty, and decreases the size and footprint of the injection molding mechanism.
Smart Images
Figure CN223618092U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding machine technology, and specifically to an electric injection mechanism using synchronous belt drive. Background Technology
[0002] Injection molding, also known as injection molding, is one of the most common methods in plastic processing. It can be used to produce plastic parts with very complex spatial combinations. The principle of injection molding is as follows: Plastic granules are quantitatively added into the barrel of the injection molding machine. Through heat transfer in the barrel and the shear friction generated by the rotation of the screw, the plastic gradually melts into a viscous flow state. Then, under the high pressure of the plunger or screw, it is injected at a high flow rate through the nozzle at the front of the barrel into the cavity of a closed mold with a lower temperature. Due to the cooling effect of the mold, the molten plastic in the mold cavity gradually solidifies and sets. Finally, the mold is opened, and the injection molded part with a certain shape and size can be ejected from the mold cavity.
[0003] Traditional injection molding mechanisms have a large number of components, making assembly difficult. The cumulative assembly error during the injection molding process is relatively large, which affects the accuracy of the entire mechanism and reduces the precision of electric injection. If the error is large, it will also affect the service life of the mechanism. In addition, due to the large number of components, the injection molding mechanism has a large overall size after assembly and occupies a large area. Utility Model Content
[0004] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an electric injection mechanism that is easy to assemble, has high injection precision, and is small in size.
[0005] The present invention adopts the following technical solution:
[0006] An electric glue-injection mechanism using synchronous belt drive, comprising:
[0007] The injection frame consists of an injection head plate and an injection tail plate arranged parallel to each other, and two side plates arranged between the injection head plate and the injection tail plate. The two side plates are arranged parallel to each other and are connected to the injection head plate and the injection tail plate at both ends respectively. The injection head plate is provided with a melt cylinder mounting hole, and the injection tail plate is provided with a lead screw mounting hole. The melt cylinder mounting hole and the lead screw mounting hole are coaxially arranged. The upper ends of the two side plates are equipped with slide rails.
[0008] The glue melting mechanism includes a glue melting cylinder installed in the glue melting cylinder mounting hole, a screw installed in the glue melting cylinder, and a glue melting drive unit disposed at the rear end of the glue melting cylinder and connected to the screw for transmission. The glue melting drive unit is used to drive the screw to rotate in the glue melting cylinder. The glue melting drive unit is disposed in the glue injection frame, and a sliding seat that slides with the slide rail is provided on the side of the glue melting drive unit.
[0009] The glue injection mechanism includes a lead screw mounted in the lead screw mounting hole via a bearing and a glue injection drive unit mounted on the glue injection tail plate and driven by the lead screw. The front end of the lead screw is threadedly connected to the glue injection drive unit. The glue injection drive unit is adapted to drive the lead screw to rotate, so as to drive the glue injection drive unit threadedly connected to the lead screw to move back and forth.
[0010] Furthermore, the melt-blown adhesive drive unit includes a fixed sleeve, a rotating sleeve, a melt-blown adhesive timing pulley, a melt-blown adhesive timing belt, and a melt-blown adhesive motor. The fixed sleeve has a sliding seat on its side. The rotating sleeve is rotatably installed inside the fixed sleeve, and the front end of the rotating sleeve extends out of the fixed sleeve and is equipped with the melt-blown adhesive timing pulley. The screw is fixedly connected to the rotating sleeve. The melt-blown adhesive motor is installed above the fixed sleeve, and the drive shaft of the melt-blown adhesive motor is connected to the melt-blown adhesive timing pulley via a melt-blown adhesive timing belt.
[0011] Furthermore, the injection drive unit includes an injection motor, an injection timing pulley, and an injection timing belt. The rear end of the lead screw extends out of the lead screw mounting hole and is fitted with the injection timing pulley. The injection motor is fixedly mounted on the injection tail plate and is connected to the injection timing pulley via the injection timing belt.
[0012] Furthermore, the width of the injection motor and the melting motor are equal, and the central axis of the injection motor and the central axis of the melting motor are located in the same plane.
[0013] Furthermore, the melt-drive unit also includes a melt-fixed base and a melt-motor mounting plate. The melt-fixed base is fixedly mounted on the fixed sleeve, and the melt-motor is mounted on the melt-motor mounting plate. The melt-motor mounting plate has a first sliding hole that extends along the height direction of the melt-motor mounting plate. The melt-fixed base is provided with a first slider that slides in cooperation with the first sliding hole. The upper end of the melt-motor mounting plate is provided with a melt-motor adjusting screw, and the lower end of the melt-motor adjusting screw passes through the side wall of the first sliding hole and is threadedly connected to the first slider.
[0014] Furthermore, the injection drive unit also includes an injection fixing seat and an injection motor mounting plate. The injection fixing seat is fixedly installed on the injection tail plate, and the injection motor is mounted on the injection motor mounting plate. The injection motor mounting plate has a second sliding hole that extends along the height direction of the injection motor mounting plate. The injection fixing seat is provided with a second slider that slides with the second sliding hole. The upper end of the injection motor mounting plate is provided with an injection motor adjusting screw, and the lower end of the injection motor adjusting screw passes through the side wall of the second sliding hole and is threadedly connected to the second slider.
[0015] Furthermore, limit blocks are provided at both ends of the slide rail.
[0016] Beneficial effects:
[0017] This invention replaces the original injection frame, which consisted of multiple parts, with an integrally molded injection head plate, injection tail plate, and side plates. This reduces the difficulty of assembling the injection frame and effectively avoids the decrease in electric injection accuracy caused by assembly errors between parts. It also reduces the overall volume of the injection mechanism. Furthermore, by placing the slide rail on the upper part of the side plate instead of inside the injection frame, the width of the injection frame is further reduced, thereby reducing the footprint of the injection molding machine. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of an electric glue injection mechanism using a melt glue synchronous belt drive according to the present invention;
[0019] Figure 2 This is a schematic diagram of the structure of an electric glue injection mechanism using a melt glue synchronous belt drive according to this utility model from another angle.
[0020] Figure 3 A top view of an electric glue injection mechanism driven by a melt glue synchronous belt according to this utility model;
[0021] Figure 4 for Figure 3 A sectional view of section AA in the middle.
[0022] Figure label:
[0023] 10. Injection frame; 101. Injection head plate; 102. Injection tail plate; 103. Side plate; 104. Slide rail; 105. Limiting block; 20. Melting mechanism; 201. Melting cylinder; 202. Screw; 203. Melting drive unit; 2031. Fixed sleeve; 2032. Rotating sleeve; 2033. Melting timing pulley; 2034. Melting timing belt; 2035. Melting motor; 2036. Melting mounting base; 2037. Melting motor Mounting plate; 2038, first sliding hole; 2039, first slider; 2040, glue injection motor adjusting screw; 30, glue injection mechanism; 301, lead screw; 302, glue injection drive unit; 3021, glue injection motor; 3022, glue injection timing pulley; 3023, glue injection timing belt; 3024, glue injection fixing seat; 3025, glue injection motor mounting plate; 3026, second sliding hole; 3027, second slider; 3028, glue injection motor adjusting screw. Detailed Implementation
[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0025] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0028] like Figure 1-4 As shown, an electric glue-injecting mechanism driven by a synchronous belt includes...
[0029] The injection frame 10 consists of an injection head plate 101 and an injection tail plate 102 arranged parallel to each other, and two side plates 103 arranged between the injection head plate 101 and the injection tail plate 102. The two side plates 103 are arranged parallel to each other and are connected to the injection head plate 101 and the injection tail plate 102 at both ends. The injection head plate 101 is provided with a melting cylinder 201 mounting hole, and the injection tail plate 102 is provided with a lead screw 301 mounting hole. The melting cylinder 201 mounting hole and the lead screw 301 mounting hole are coaxially arranged. The upper ends of the two side plates 103 are equipped with slide rails 104.
[0030] The glue-melting mechanism 20 includes a glue-melting cylinder 201 installed in the mounting hole of the glue-melting cylinder 201, a screw 202 installed in the glue-melting cylinder 201, and a glue-melting drive unit 203 disposed at the rear end of the glue-melting cylinder 201 and connected to the screw 202 in a transmission manner. The glue-melting drive unit 203 is used to drive the screw 202 to rotate in the glue-melting cylinder 201. The glue-melting drive unit 203 is disposed in the glue-injection frame 10, and a sliding seat that slides with the slide rail 104 is provided on the side of the glue-melting drive unit 203.
[0031] The glue injection mechanism 30 includes a lead screw 301 mounted in the mounting hole of the lead screw 301 via a bearing, and a glue injection drive unit 302 mounted on the glue injection tail plate 102 and drivenly connected to the lead screw 301. The front end of the lead screw 301 is threadedly connected to the glue injection drive unit 203. The glue injection drive unit 302 is adapted to drive the lead screw 301 to rotate, so as to drive the glue injection drive unit 203 threadedly connected to the lead screw 301 to move back and forth.
[0032] When this invention is in operation, the melt drive unit 203 drives the screw 202 to rotate, so as to transport the molten plastic in the melt cylinder 201 to the outlet of the melt cylinder 201. At the same time, the injection drive unit 302 drives the lead screw 301 to rotate, so that the melt drive unit 203, which is threadedly connected to the lead screw 301, moves forward and drives the melt cylinder 201 and the screw 202 to move forward together, so that the melt cylinder 201 moves to the injection position for injection molding.
[0033] This invention replaces the original injection frame 10, which consisted of multiple parts, with an integrally molded injection head plate 101, injection tail plate 102, and side plates 103. This reduces the assembly difficulty of the injection frame 10 and effectively avoids the decrease in electric injection accuracy due to assembly errors between parts. It also reduces the overall volume of the injection mechanism. Furthermore, by placing the slide rail 104 on the upper end of the side plate 103 instead of on the inner side of the injection frame 10, the width of the injection frame 10 is further reduced, thereby reducing the footprint of the injection molding machine.
[0034] In addition, to prevent the sliding seat from detaching from the slide rail 104, in this embodiment, limit blocks 105 are provided at both ends of the slide rail 104. When the sliding seat slides to the end of the slide rail 104, the limit blocks 105 can restrict the sliding seat.
[0035] Specifically, in this embodiment, the melt adhesive driving unit 203 includes a fixed sleeve 2031, a rotating sleeve 2032, a melt adhesive timing pulley 2033, a melt adhesive timing belt 2034, and a melt adhesive motor 2035. The fixed sleeve 2031 has a sliding seat on its side. The rotating sleeve 2032 is rotatably installed inside the fixed sleeve 2031, and the front end of the rotating sleeve 2032 extends out of the fixed sleeve 2031 and is fitted with the melt adhesive timing pulley 2033. The screw 202 is fixedly connected to the rotating sleeve 2032. The melt adhesive motor 2035 is installed above the fixed sleeve 2031, and the drive shaft of the melt adhesive motor 2035 is connected to the melt adhesive timing pulley 2033 via the melt adhesive timing belt 2034.
[0036] During operation, the melt motor 2035 drives the melt timing pulley 2033 to rotate via the melt timing belt 2034, thereby driving the rotating sleeve 2032 to rotate, which in turn drives the screw 202 fixed to the rotating sleeve 2032 to rotate, thus pushing the molten plastic in the melt cylinder 201 to the glue outlet position of the melt cylinder 201.
[0037] Meanwhile, since the injection drive unit 302 includes an injection motor 3021, an injection timing pulley 3022, and an injection timing belt 3023, the rear end of the lead screw 301 extends out of the lead screw 301 mounting hole and is equipped with the injection timing pulley 3022. The injection motor 3021 is fixedly installed on the injection tail plate 102 and is connected to the injection timing pulley 3022 through the injection timing belt 3023.
[0038] When the melt glue motor 2035 is working, the glue injection motor 3021 drives the glue injection timing pulley 3022 to rotate through the glue injection timing belt 3023, which in turn drives the lead screw 301 fixed to the glue injection timing pulley 3022 to rotate, thereby causing the melt glue drive unit 203 threadedly connected to the lead screw 301 to move forward or backward along the axial direction of the lead screw 301.
[0039] Meanwhile, to further reduce the volume of the electric injection mechanism 30, in this embodiment, both the injection motor 3021 and the melting motor 2035 are positioned above the injection frame 10, rather than on the side of the injection frame 10. This helps to reduce the width of the injection frame 10. Specifically, the melting motor 2035 is positioned above the fixed sleeve 2031, and the injection motor 3021 is mounted above the injection tail plate 102. Furthermore, the width of the injection motor 3021 is set to be equal to the width of the melting motor 2035, and the central axis of the injection motor 3021 and the central axis of the melting motor 2035 are located in the same plane. This ensures that the injection motor 3021 and the melting motor 2035 are both in the same vertical space, making full use of the vertical space, improving space utilization, and facilitating the miniaturization of the electric injection mechanism 30.
[0040] Preferably, to ensure that the injection motor 3021 and the melt motor 2035 are located in the same space to further improve space utilization, in this embodiment, the melt drive unit 203 further includes a melt fixing seat 2036 and a melt motor mounting plate 2037. The melt fixing seat 2036 is fixedly installed on the fixing sleeve 2031, and the melt motor 2035 is installed on the melt motor mounting plate 2037. The melt motor mounting plate 2037 has a first sliding hole 2038 that extends along the height direction of the melt motor mounting plate 2037. The melt fixing seat 2036 is provided with a first slider 2039 that slides with the first sliding hole 2038. The upper end of the melt motor mounting plate 2037 is provided with a melt motor adjusting screw 2040, and the lower end of the melt motor adjusting screw 2040 passes through the side wall of the first sliding hole 2038 and is threadedly connected to the first slider 2039.
[0041] The injection drive unit 302 further includes an injection fixing seat 3024 and an injection motor mounting plate 3025. The injection fixing seat 3024 is fixedly installed on the injection tail plate 102, and the injection motor 3021 is installed on the injection motor mounting plate 3025. The injection motor mounting plate 3025 has a second sliding hole 3026, which extends along the height direction of the injection motor mounting plate 3025. The injection fixing seat 3024 is provided with a second slider 3027 that slides with the second sliding hole 3026. The upper end of the injection motor mounting plate 3025 is provided with an injection motor adjusting screw 3028, and the lower end of the injection motor adjusting screw 3028 passes through the side wall of the second sliding hole 3026 and is threadedly connected to the second slider 3027.
[0042] During operation, the positions of the melt motor 2035 on the melt fixing seat 2036 and the injection motor 3021 on the injection fixing seat 3024 can be adjusted by rotating the melt motor adjusting screw 2040 and the injection motor adjusting screw 3028, so that the melt motor 2035 and the injection motor 3021 are in the same vertical space, thereby improving space utilization and facilitating the miniaturization of the electric injection mechanism 30.
[0043] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.
Claims
1. An electric glue-injection mechanism using synchronous belt drive, characterized in that: include The injection frame consists of an injection head plate and an injection tail plate arranged parallel to each other, and two side plates arranged between the injection head plate and the injection tail plate. The two side plates are arranged parallel to each other and are connected to the injection head plate and the injection tail plate at both ends respectively. The injection head plate is provided with a melt cylinder mounting hole, and the injection tail plate is provided with a lead screw mounting hole. The melt cylinder mounting hole and the lead screw mounting hole are coaxially arranged. The upper ends of the two side plates are equipped with slide rails. The glue melting mechanism includes a glue melting cylinder installed in the glue melting cylinder mounting hole, a screw installed in the glue melting cylinder, and a glue melting drive unit disposed at the rear end of the glue melting cylinder and connected to the screw for transmission. The glue melting drive unit is used to drive the screw to rotate in the glue melting cylinder. The glue melting drive unit is disposed in the glue injection frame, and a sliding seat that slides with the slide rail is provided on the side of the glue melting drive unit. The glue injection mechanism includes a lead screw mounted in the lead screw mounting hole via a bearing and a glue injection drive unit mounted on the glue injection tail plate and driven by the lead screw. The front end of the lead screw is threadedly connected to the glue injection drive unit. The glue injection drive unit is adapted to drive the lead screw to rotate, so as to drive the glue injection drive unit threadedly connected to the lead screw to move back and forth.
2. The electric injection mechanism with synchronous belt drive according to claim 1, characterized in that: The melt-blown drive unit includes a fixed sleeve, a rotating sleeve, a melt-blown timing pulley, a melt-blown timing belt, and a melt-blown motor. The fixed sleeve has a sliding seat on its side. The rotating sleeve is rotatably installed inside the fixed sleeve, and the front end of the rotating sleeve extends out of the fixed sleeve and is equipped with the melt-blown timing pulley. The screw is fixedly connected to the rotating sleeve. The melt-blown motor is installed above the fixed sleeve, and the drive shaft of the melt-blown motor is connected to the melt-blown timing pulley via the melt-blown timing belt.
3. The electric injection mechanism with synchronous belt drive according to claim 2, characterized in that: The injection drive unit includes an injection motor, an injection timing pulley, and an injection timing belt. The rear end of the lead screw extends out of the lead screw mounting hole and is fitted with the injection timing pulley. The injection motor is fixedly mounted on the injection tail plate and is connected to the injection timing pulley via the injection timing belt.
4. The electric injection mechanism with synchronous belt drive according to claim 3, characterized in that: The injection motor and the melting motor have the same width, and the central axis of the injection motor and the central axis of the melting motor are located in the same plane.
5. The electric injection mechanism with synchronous belt drive according to claim 2, characterized in that: The melt-drive unit further includes a melt-fixed base and a melt-motor mounting plate. The melt-fixed base is fixedly mounted on the fixed sleeve, and the melt-motor is mounted on the melt-motor mounting plate. The melt-motor mounting plate has a first sliding hole that extends along the height direction of the melt-motor mounting plate. The melt-fixed base is provided with a first slider that slides in cooperation with the first sliding hole. The upper end of the melt-motor mounting plate is provided with a melt-motor adjusting screw, and the lower end of the melt-motor adjusting screw passes through the side wall of the first sliding hole and is threadedly connected to the first slider.
6. The electric injection mechanism with synchronous belt drive according to claim 3, characterized in that: The injection drive unit further includes an injection fixing seat and an injection motor mounting plate. The injection fixing seat is fixedly installed on the injection tail plate, and the injection motor is mounted on the injection motor mounting plate. The injection motor mounting plate has a second sliding hole that extends along the height direction of the injection motor mounting plate. The injection fixing seat is provided with a second slider that slides with the second sliding hole. The upper end of the injection motor mounting plate is provided with an injection motor adjusting screw, and the lower end of the injection motor adjusting screw passes through the side wall of the second sliding hole and is threadedly connected to the second slider.
7. The electric injection mechanism with synchronous belt drive according to claim 1, characterized in that: Limiting blocks are provided at both ends of the slide rail.