Melt glue driving structure and injection molding machine

Abstract

The utility model relates to the field of injection molding machine discloses a melt glue drive structure and injection molding machine. It includes the platform of shooting, servo motor and bevel support subassembly, servo motor is connected with driving gear, the driving gear is rotatably equipped on the platform of shooting, and the driving gear is located below servo motor, and driving gear is installed with synchronous gear belt, and synchronous gear belt is connected with the driving gear, the platform of shooting is equipped with mounting plate, and servo motor is fixedly connected with mounting plate, and mounting plate can be adjusted and fixed limit position and moves up and down on the platform of shooting, the bottom of mounting plate is equipped with cooperation slope, and bevel support subassembly is located below mounting plate and is abutted with cooperation slope to support and limit the downward movement of mounting plate. The utility model bevel support subassembly can support mounting plate, make mounting plate and servo motor not easy to move down only synchronous gear belt loosens, the stability of supporting to mounting plate is high, and the service life is long, can adapt mounting plate to rise different height, and the fault tolerance of synchronous gear belt is high.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and more specifically, to a melt drive structure and an injection molding machine. Background Technology

[0002] Injection molding machines typically have an injection unit, which houses a melt drive assembly and an injection assembly. The melt drive assembly connects to the screw, driving it to rotate and push the granulated plastic to the melting zone for melting. The injection assembly then injects the molten plastic into the mold. The melt drive assembly includes a servo motor, a drive wheel, a driven wheel, and a synchronous gear belt. The drive wheel is located above the driven wheel and connected to the servo motor's shaft. The driven wheel rotates synchronously on the injection unit and is connected to the screw. The synchronous gear belt is fitted onto the drive and driven wheels, enabling the drive wheel to drive the driven wheel. The existing injection unit has a long, vertically oriented hole for mounting the servo motor. A bolt threaded into this hole connects to the servo motor, and the motor is cantilevered for easy adjustment. This long, oriented hole design allows for vertical movement and adjustment of the motor, facilitating the installation and tensioning of the synchronous gear belt and preventing slippage.

[0003] However, after the tension of the synchronous gear belt is adjusted, the servo motor is only fixed by the bolts inserted into the long slot and the injection table. During the operation of the injection molding machine, vibration will be generated. At the same time, under the action of the servo motor's own weight and the tension of the synchronous gear belt, the servo motor is prone to a certain amount of downward displacement, which affects the tension of the synchronous gear belt and causes slippage. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model first provides a melt-driving structure, including a spraying platform, a servo motor, and an inclined support assembly. The servo motor is connected to a drive gear, and a driven gear is rotatably mounted on the spraying platform. The driven gear is located below the servo motor, and a synchronous gear belt is mounted on the drive gear. The synchronous gear belt is connected to the driven gear so that the driven gear rotates synchronously with the drive gear. A mounting plate is provided on the spraying platform, and the servo motor is fixedly connected to the mounting plate. The mounting plate can be moved up and down on the spraying platform for adjustment and fixed limitation, so that the synchronous gear belt can be installed and its tension adjusted. A mating inclined surface is provided at the bottom of the mounting plate, and the inclined support assembly is located below the mounting plate and abuts against the mating inclined surface to support and limit the downward movement of the mounting plate.

[0005] Optionally, the mounting plate has an oblong hole that extends in the vertical direction, and a bolt that is threadedly connected to the launching platform is inserted into the oblong hole.

[0006] Optionally, two mating inclined surfaces are symmetrically provided on the mounting plate, and two sets of inclined surface support components are provided. The two sets of inclined surface support components are located on opposite sides below the mounting plate and mate with the two mating inclined surfaces.

[0007] Optionally, the inclined support assembly includes a support plate, a fixing member, and a hand-tightening bolt. The fixing member is located on the side of the mounting plate and spaced apart. The fixing member is fixedly connected to the firing platform. The support plate is slidably disposed on the firing platform. The support plate can abut against the mating inclined surface to support the mounting plate. The hand-tightening bolt is threaded onto the fixing member, and the threaded end of the hand-tightening bolt abuts against the side of the support plate near the fixing member to limit the movement of the support plate.

[0008] Optionally, a mounting plate is fixedly provided on the top of the shooting platform, the mounting plate is connected to the mounting plate, the fixing member is spaced apart from the mounting plate, and a reinforcing plate is fixedly connected to the side of the fixing member near the top, and the reinforcing plate is fixedly connected to the mounting plate.

[0009] Optionally, a compression spring is fitted onto the hand-tightening bolt. The compression spring is located on the side of the fixing member away from the support plate, and the two ends of the compression spring abut against the fixing member and the hand-tightening part of the hand-tightening bolt, respectively.

[0010] Optionally, a T-shaped strip is fixedly provided at the bottom of the support plate, and a T-shaped groove is provided on the shooting platform for the T-shaped strip to be inserted and slid.

[0011] Optionally, the support plate is provided with an abutting inclined surface that fits against the mating inclined surface.

[0012] Optionally, the mating inclined surface is provided with a helical toothed strip, and the abutting inclined surface is provided with a plurality of helical toothed grooves. The plurality of helical toothed grooves are arranged at intervals along the inclination direction of the abutting inclined surface. The helical toothed strip is adapted to be inserted into any one of the helical toothed grooves so that the support plate is not easily moved toward the fixing member.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0014] 1. After the synchronous gear belt is installed, move the mounting plate and servo motor upward to tighten the synchronous gear belt. Then tighten the bolts to fix the mounting plate on the injection table. After that, move the inclined support assembly to the bottom of the mounting plate to support and abut the mounting plate, so that the mounting plate is not prone to slippage due to vibration, the weight of the servo motor itself and the tension of the synchronous gear belt.

[0015] 2. Since the tension of synchronous gear belts varies from manufacturer to manufacturer or batch to batch, and synchronous gear belts are wear parts that need to be replaced regularly, the upward movement distance of the mounting plate will change after replacement. Therefore, the combination of inclined surface and abutment inclined surface can accommodate different heights of the mounting plate and has a high fault tolerance rate for synchronous gear belts.

[0016] 3. When the support plate supports the mounting plate, the inclined surface abuts against the inclined surface. If the mounting plate tends to move downward, the support plate will be squeezed and move closer to the fixing part under the gravity of the mounting plate and the servo motor. At this time, the hand-tightened bolt will abut against the support plate after being connected to the thread of the fixing part, thus limiting the movement of the support plate and improving the stability of the support.

[0017] 4. When the mounting plate tends to move downwards, the weight of the mounting plate and the servo motor itself will be transferred to the fastener through the support plate and the hand-tightened bolts. The reinforcement plate can increase the stability of the fastener and prevent the fastener from becoming less stable due to stress concentration after long-term use.

[0018] 5. When the support plate supports the mounting plate, the oblique toothed strips are inserted into the corresponding oblique toothed grooves to form an interlocking structure, making it difficult for the support plate to move towards the fixing part, thus further improving the stability of the support plate in supporting and limiting the mounting plate.

[0019] In addition, this utility model provides an injection molding machine, including the melt drive structure described above.

[0020] Compared with the prior art, the injection molding machine described in this utility model has the same advantages as the melt drive structure described above, which will not be repeated here. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the melt-driving structure in an embodiment of the present invention;

[0022] Figure 2 This is an exploded view of the mounting plate and inclined support assembly in an embodiment of this utility model;

[0023] Figure 3 This is an exploded view of the firing platform, mounting plate, and inclined support assembly in an embodiment of this utility model;

[0024] Figure 4 This is a partial enlarged cross-sectional view of an embodiment of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Launching platform; 11. Driven gear; 12. Mounting plate; 13. Mounting support plate; 14. Waist-shaped hole; 15. Mating inclined surface; 151. Helical toothed strip; 16. T-slot; 2. Servo motor; 21. Drive gear; 22. Synchronous gear belt; 3. Inclined surface support assembly; 31. Support plate; 311. T-slot; 312. Abutting inclined surface; 313. Helical toothed groove; 32. Fixing component; 33. Hand-tightening bolt; 34. Compression spring; 35. Reinforcing plate. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figure 1-4 This application will be described in further detail.

[0027] The accompanying drawings of this utility model embodiment provide a coordinate system XYZ, where the positive direction of the X-axis represents the right, the negative direction of the X-axis represents the left, the positive direction of the Y-axis represents the front, the negative direction of the Y-axis represents the back, the positive direction of the Z-axis represents the top, and the negative direction of the Z-axis represents the bottom.

[0028] In a first aspect, this utility model embodiment provides a melt-driving structure, referring to... Figure 1 and Figure 2 The melt-driven structure includes an injection stage 1, a servo motor 2, and an inclined support assembly 3. A drive gear 21 is keyed to the motor shaft of the servo motor 2. A driven gear 11 is rotatably mounted on the injection stage 1, located below the servo motor 2. The driven gear 11 is adapted to connect with a screw to drive the screw to rotate, thereby conveying the material to the melting zone of the injection molding machine. An annular synchronous gear belt 22 is fitted onto the drive gear 21, and the synchronous gear belt 22 is also fitted onto the driven gear 11, so that after the servo motor 2 drives the drive wheel to rotate, the drive wheel drives the driven wheel to rotate. A mounting plate 12 is provided on the injection stage 1. The servo motor 2 is fixedly connected to the mounting plate 12 by bolts. The mounting plate 12 can be moved up and down on the injection stage 1 for adjustment and fixed limit, so that the synchronous gear belt 22 can be installed and its tension adjusted. After the mounting plate 12 moves upward and the tension of the synchronous gear belt 22 is adjusted, it will be fixedly connected to the firing table 1. The inclined support assembly 3 is adapted to be located below the mounting plate 12 to support the mounting plate 12 and limit the downward movement of the mounting plate 12.

[0029] The servo motor 2 is located near the front end of the firing platform 1. Compared to setting the servo motor 2 at the rear end of the firing platform 1, placing the servo motor 2 near the front end of the firing platform 1 allows the firing platform 1 to be shorter and occupy less space.

[0030] Reference Figure 1 and Figure 2The top of the firing platform 1 is integrally formed with two mounting plates 13, which are symmetrically arranged on the left and right sides. The mounting plate 12 is located at the front end of the two mounting plates 13. The mounting plate 12 has four oblong holes 14 spaced apart, and the four oblong holes 14 extend in the vertical direction. Each mounting plate 13 has two bolts installed in the vertical direction, and the bolts are inserted into the corresponding oblong holes 14. After the bolts are tightened, the mounting plate 12 is fixedly connected to the mounting plate 13; after the bolts are loosened, the mounting plate 12 can drive the servo motor 2 and the drive gear 21 to move up and down, thereby facilitating the installation of the synchronous gear belt 22 and the adjustment of its tension.

[0031] Because the tension of the synchronous gear belt 22 varies between different manufacturers or batches, and because the synchronous gear belt 22 is a wear part that needs to be replaced regularly, the upward movement distance of the mounting plate 12 will change after replacement. Therefore, the bottom of the mounting plate 12 is provided with a mating inclined surface 15. The inclined surface support component 3 abuts against the mating inclined surface 15 to accommodate different rising heights of the mounting plate 12, resulting in a high tolerance for the synchronous gear belt 22.

[0032] Reference Figure 1 and Figure 2 To prevent the mounting plate 12 from tilting after the inclined support assembly 3 and the mating inclined surface 15 abut against each other, two mating inclined surfaces 15 are provided, symmetrically arranged. Two sets of inclined support assemblies 3 are provided, located on opposite sides below the mounting plate 12 and engaging with the two mating inclined surfaces 15. The inclined support assembly 3 is made of metal, thus providing greater stability when supporting the mounting plate 12.

[0033] As the inclined surface 15 gradually extends towards the outer wall of the mounting plate 12 in the direction of its upward movement, the inclined surface support assembly 3 can be located on the side below the mounting plate 12, making it easier for the operator to touch and operate. The two sets of inclined surface support assemblies 3 have the same structure; the following description uses one set of inclined surface support assembly 3 as an example.

[0034] Reference Figures 1 to 3The inclined plane support assembly 3 includes a support plate 31, a fixing member 32, and a hand-tightening bolt 33. The fixing member 32 is located on the side of the mounting plate 12 and is spaced apart from the mounting plate 12 and the mounting support plate 13. The fixing member 32 is fixedly connected to the launching table 1 by bolts. The support plate 31 is slidably disposed on the side of the fixing member 32 near the mounting plate 12, and the support plate 31 can move closer to or away from the fixing member 32, so that the support plate 31 can support the mounting plate 12 at different heights. One end of the hand-tightening bolt 33 is the hand-tightening part, and the end away from the nut is the threaded end. The hand-tightening bolt 33 is threadedly installed on the fixing member 32, and the threaded end of the hand-tightening bolt 33 abuts against the side of the support plate 31 near the fixing member 32. When the mounting plate 12 tends to move downward, the weight of the mounting plate 12 and the servo motor 2 will press the support plate 31 under the action of the inclined plane 15, causing the support plate 31 to move closer to the fixing member 32. After the hand-tightened bolt 33 abuts against the support plate 31, it can limit the movement of the support plate 31 towards the fixing member 32, thereby improving the stability of the support plate 31 when supporting the mounting plate 12.

[0035] Reference Figures 1 to 3 The bottom of the support plate 31 is integrally formed with a T-shaped strip 311. The shooting table 1 is provided with a T-shaped groove 16 that is adapted to the T-shaped strip 311. The T-shaped groove 16 extends in the left and right direction and passes through the left and right sides of the shooting table 1 so that the T-shaped strip 311 can be inserted. After the T-shaped strip 311 is inserted into the T-shaped groove 16, it can slide in a direction and is not easy to move back and forth or up and down, thereby improving the stability when supporting the mounting plate 12.

[0036] Reference Figures 1 to 4 The support plate 31 has an abutting inclined surface 312 that fits against the mating inclined surface 15, thereby increasing the contact area between the support plate 31 and the mating inclined surface 15 and further improving stability. The mating inclined surface 15 has a helical toothed strip 151, with the helical teeth gradually protruding away from the mating inclined surface 15 along the direction away from the fixing member 32 on the support plate 31. The abutting inclined surface 312 has multiple helical toothed grooves 313, which are spaced apart along the inclination direction of the abutting inclined surface 312. The helical toothed strip 151 is suitable for insertion into any one of the helical toothed grooves 313. When the mounting plate 12 tends to move downwards, the weight of the mounting plate 12 and the servo motor 2 will drive the support plate 31 to move closer to the fixing member 32. However, the helical toothed strip 151, inserted into the corresponding helical toothed groove 313, forms an interlocking structure, making it difficult for the support plate 31 to move closer to the fixing plate, thus improving the stability of the support.

[0037] Reference Figures 1 to 3The hand-tightening part of the hand-tightening bolt 33 (i.e., the end where the nut is located) is located at the end of the fixing member 32 away from the support plate 31, and the threaded end of the hand-tightening bolt 33 passes through the fixing member 32 and abuts against the support plate 31. A compression spring 34 is fitted on the hand-tightening bolt 33. The compression spring 34 is located on the side of the fixing member 32 away from the support plate 31. The two ends of the compression spring 34 abut against the fixing member 32 and the hand-tightening part of the hand-tightening bolt 33, respectively. When the support plate 31 supports the mounting plate 12, the compression spring 34 is in a compressed state and is not compressed to its limit value. In this way, the compression spring 34 can generate continuous axial pressure through elastic potential energy, increasing the friction between the threads of the hand-tightening bolt 33 and the fixing member 32, and preventing the hand-tightening bolt 33 from loosening.

[0038] If the mounting plate 12 and servo motor 2 tend to move downwards, their own weight will be transferred to the fixing member 32 through the support plate 31 and the hand-tightening bolts 33. Since there is no support connection above the fixing member 32, and it is only fixed to the firing table 1 by bolts, the stress is relatively concentrated. Therefore, a reinforcing plate 35 is bolted to the side of the fixing member 32 near its top. The other side of the reinforcing plate 35 extends towards the corresponding mounting support plate 13 and is fixedly connected to it by bolts. In this way, the reinforcing plate 35 increases the stability of the fixing member 32, preventing its stability from deteriorating due to stress concentration over long-term use, and extending its service life.

[0039] The implementation principle of the melt drive structure in this application embodiment is as follows: When disassembling the synchronous gear belt 22, first loosen the hand-tightening bolt 33 so that the hand-tightening bolt 33 moves away from the support plate 31 and does not abut against the support plate 31. Then loosen the bolts on the mounting plate 12. Then use a tool to pry up the mounting plate 12 and the servo motor 2 so that the helical tooth strip 151 is disengaged from the helical tooth groove and pushes the support plate 31 to move closer to the fixing member 32. Finally, drive the mounting plate 12, the servo motor 2 and the drive gear 21 to move down.

[0040] When installing the synchronous gear belt 22, after the synchronous pulley is sleeved on the driving gear 21 and the driven gear 11, the mounting plate 12 and the servo motor 2 are pried upwards with a pry bar until the synchronous gear belt 22 is tightened. Then, the support plate 31 is moved below the mounting plate 12 and the mating inclined surface 15 and the abutting inclined surface 312 are brought into contact. The helical tooth strip 151 is inserted into the corresponding helical tooth groove 313. Then, the hand-tightening bolt 33 is tightened so that the threaded end of the hand-tightening bolt 33 abuts against the support plate 31, and the bolts fixing the mounting plate 12 are tightened at the same time.

[0041] Secondly, another embodiment of the present invention provides an injection molding machine, including the melt drive structure described in the first aspect.

[0042] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0043] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure 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 disclosure.

[0044] Furthermore, the terms "first," "second," etc., 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 with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0046] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A melt-driven structure, characterized in that: The system includes a firing platform (1), a servo motor (2), and an inclined support assembly (3). The servo motor (2) is connected to a drive gear (21). A driven gear (11) is rotatably mounted on the firing platform (1). The driven gear (11) is located below the servo motor (2). A synchronous gear belt (22) is mounted on the drive gear (21). The synchronous gear belt (22) is connected to the driven gear (11) so that the driven gear (11) rotates synchronously with the drive gear (21). The firing platform (1) The mounting plate (12) is provided on the top, and the servo motor (2) is fixedly connected to the mounting plate (12). The mounting plate (12) can be moved up and down on the shooting platform (1) for adjustment and fixed limit, so that the synchronous gear belt (22) can be installed and the tension can be adjusted. The bottom of the mounting plate (12) is provided with a mating inclined surface (15). The inclined surface support component (3) is located below the mounting plate (12) and abuts against the mating inclined surface (15) to support and limit the downward movement of the mounting plate (12).

2. The melt-driven structure according to claim 1, characterized in that: The mounting plate (12) has a waist-shaped hole (14) extending in the vertical direction, and a bolt that is threadedly connected to the firing platform (1) is inserted into the waist-shaped hole (14).

3. The melt-driven structure according to claim 1, characterized in that: Two of the mating inclined surfaces (15) are symmetrically provided on the mounting plate (12). Two sets of inclined surface support components (3) are provided. The two sets of inclined surface support components (3) are located on opposite sides below the mounting plate (12) and are mated with the two mating inclined surfaces (15).

4. The melt-driven structure according to any one of claims 1-3, characterized in that: The inclined support assembly (3) includes a support plate (31), a fixing member (32), and a hand-tightening bolt (33). The fixing member (32) is located on the side of the mounting plate (12) and spaced apart. The fixing member (32) is fixedly connected to the shooting platform (1). The support plate (31) is slidably mounted on the shooting platform (1). The support plate (31) can abut against the mating inclined surface (15) to support the mounting plate (12). The hand-tightening bolt (33) is threaded onto the fixing member (32), and the threaded end of the hand-tightening bolt (33) abuts against the side of the support plate (31) near the fixing member (32) to limit the movement of the support plate (31).

5. The melt-driven structure according to claim 4, characterized in that: The top of the shooting platform (1) is fixedly provided with a mounting plate (13), the mounting plate (12) is connected to the mounting plate (13), the fixing member (32) is spaced apart from the mounting plate (13), and a reinforcing plate (35) is fixedly connected to the side of the fixing member (32) near the top, and the reinforcing plate (35) is fixedly connected to the mounting plate (13).

6. The melt-driven structure according to claim 4, characterized in that: A compression spring (34) is fitted on the hand-tightening bolt (33). The compression spring (34) is located on the side of the fixing member (32) away from the support plate (31). The two ends of the compression spring (34) abut against the fixing member (32) and the hand-tightening part of the hand-tightening bolt (33), respectively.

7. The melt-driven structure according to claim 4, characterized in that: The bottom of the support plate (31) is fixedly provided with a T-shaped strip (311), and the shooting platform (1) is provided with a T-shaped groove (16) for the T-shaped strip (311) to be inserted and slid.

8. The melt-driven structure according to claim 4, characterized in that: The support plate (31) is provided with an abutting inclined surface (312) that fits against the mating inclined surface (15).

9. The melt-driven structure according to claim 8, characterized in that: The mating inclined surface (15) is provided with a helical toothed strip (151), and the abutting inclined surface (312) is provided with a plurality of helical toothed grooves (313). The plurality of helical toothed grooves (313) are arranged at intervals along the inclined direction of the abutting inclined surface (312). The helical toothed strip (151) is suitable for being inserted into any one of the helical toothed grooves (313) so that the support plate (31) is not easily moved toward the fixing member (32).

10. An injection molding machine, characterized in that, Includes the melt-driven structure as described in any one of claims 1-9.

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