Injection unit supporting structure

Abstract

The utility model provides an injection unit supporting structure. The injection unit supporting structure comprises an injection supporting frame, a connecting block and an adjustable sleeve component, the connecting block is connected with a rack of the injection molding machine in a matching manner; the adjustable sleeve component is arranged between the injection supporting frame and the connecting block in a supporting mode and comprises a stud, a sleeve and an eccentric adjusting nut. On one hand, the height of the injection supporting frame can be adjusted through the adjustable sleeve component, on the other hand, when the injection supporting frame is positioned, the injection supporting frame is driven to conduct angle fine adjustment on the whole horizontal plane through the eccentric adjusting nut of the adjustable sleeve component, and therefore the fine adjustment process of a nozzle of an injection unit is achieved. And centering adjustment of the nozzle and the mold is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to an injection unit support structure. Background Technology

[0002] Injection molding machines are the core equipment in plastic molding and processing. They inject molten plastic into a mold cavity under high pressure, which then cools and solidifies to obtain a product of a specific shape. The injection unit typically includes a screw, barrel, and drive unit, and is the main component of the injection molding machine. The injection unit is mounted on the frame of the injection molding machine through a support structure to ensure its stability under high pressure and high speed.

[0003] When the injection unit is matched with different mold clamping units, the center height of the injection molding machine changes, requiring the installation of injection support frames of different heights. The height of the injection support frames is adjusted to ensure that the nozzle height is aligned with the mold.

[0004] Existing injection support frames, typically such as Figure 1 and Figure 2 As shown, the center height of different machines is accommodated by increasing the height of the injection support frame. However, this method of simply equipping support frames of varying heights has the following drawbacks:

[0005] 1. Each height requires a separate injection support frame, resulting in excessive injection support frame materials, high management and design costs, and poor versatility;

[0006] 2. The injection support frame with a higher height is heavy and has a high material cost.

[0007] Meanwhile, the injection support frame also needs to align the nozzle of the injection unit with the mold during the injection unit's operation. This alignment requires the use of other alignment mechanisms, which is complex in structure and cumbersome in adjustment.

[0008] Therefore, there is an urgent need to further improve the existing injection support frame so that it can not only adapt to different height requirements, but also play a certain role in centering and fine adjustment. Utility Model Content

[0009] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides an injection unit support structure, which can effectively adjust the height of the injection support frame by means of the support feet according to the height requirements. At the same time, it can also perform fine-tuning of the angle of the injection support frame in the horizontal direction during the height adjustment process, so that the nozzle of the injection unit it carries can be adjusted for centering.

[0010] The technical solution adopted by this utility model to solve its technical problem is: an injection unit support structure, set on the injection molding machine frame, for supporting the injection unit, including an injection support frame, a connecting block, and an adjustable sleeve component; the connecting block is connected to the injection molding machine frame; the adjustable sleeve component is supported and set between the injection support frame and the connecting block, including a stud, a sleeve, and an eccentric adjusting nut; the connecting block has an installation hole, and a fixing nut is provided above the corresponding installation hole on the connecting block; the bottom of the stud is engaged with the installation hole and locked to the connecting block by the fixing nut; the stud is corresponding to... A positioning nut is threaded onto the top of the fixing nut. The sleeve is fitted onto the stud, and the lower end face of the sleeve is supported by the positioning nut. The injection support frame has a stepped hole. The stud passes through the sleeve and extends from the upper end face of the stepped hole. The lower end face of the injection support frame is supported by the sleeve. The eccentric adjusting nut is connected to the upper end of the stud, and the center of the radial section of the eccentric adjusting nut is eccentrically set relative to the center line of the stud. The stepped hole is adapted to the shape of the eccentric adjusting nut. A locking nut is also threaded onto the top of the stud corresponding to the eccentric adjusting nut to position the eccentric adjusting nut and the injection support frame.

[0011] In the above solution, to address the height adjustment requirements of the injection support frame, the height can be effectively adjusted according to the height requirements through the adjustment of the stud nut and the support of the sleeve. During the adjustment and positioning process of the nut and stud, the nut related to the injection support frame is designed as an eccentric adjusting nut. The rotation of the eccentric adjusting nut drives the injection support frame to make a certain angle adjustment along the horizontal plane, thereby adapting to the usage requirements of centering and adjusting the nozzle of the injection unit.

[0012] Furthermore, the stepped hole is a three-stage stepped hole, comprising, from top to bottom, a large-diameter section, a medium-diameter section, and a small-diameter section with progressively decreasing diameters. The small-diameter section has a diameter larger than the outer diameter of the stud. The eccentric adjusting nut comprises, from top to bottom, an upper fixed section and a lower eccentric section with different outer diameters. The outer diameter of the lower eccentric section matches the medium-diameter section of the three-stage stepped hole. When the eccentric adjusting nut is threaded with the stud, the variable-diameter end face between the upper fixed section and the lower eccentric section of the eccentric adjusting nut abuts against the variable-diameter end face between the large-diameter section and the medium-diameter section of the three-stage stepped hole. Utilizing the multi-stage variable-diameter design of the stepped hole, a mating section with the eccentric adjusting nut is formed during eccentric adjustment, and a positioning and abutting end face is also provided for positioning during height adjustment.

[0013] Furthermore, the length of the lower eccentric section of the eccentric adjusting nut is less than the length of the middle diameter section, and a gap is formed between the variable diameter end face of the middle diameter section and the small diameter section of the three-stage stepped hole and the lower end face of the eccentric adjusting nut. This gap can prevent wear between the lower end face and the variable diameter end face of the stepped hole during the thread adjustment of the eccentric adjusting nut, thus providing stroke for eccentric adjustment.

[0014] Furthermore, the injection unit support structure can also drive the injection support frame to slide on the machine frame. The injection molding machine frame is provided with guide rails along the sliding direction of the injection unit, and the connecting block is provided with a slider fixed at the bottom. The slider slides in cooperation with the track.

[0015] Furthermore, at least one of the connecting blocks has a locking and positioning device on its side. The locking and positioning device stops and positions the connecting block against the injection molding machine frame, ensuring that it can be locked and positioned against the frame after sliding into place.

[0016] Preferably, the locking and positioning device includes a locking and positioning block, a friction block, and a pressing wrench. The locking and positioning block is fixedly connected to the corresponding connecting block. The pressing wrench is adjustablely mounted on the locking and positioning block. The friction block is mounted at the lower end of the pressing wrench and is controlled by the pressing wrench to stop friction against the surface of the injection molding machine frame.

[0017] Furthermore, a protective cover is detachably connected to the outer side of the injection support frame. Since the lower end of the injection support frame becomes an open area when it is adjusted and raised, the protective cover prevents entry into this risky area, thus improving the protective effect.

[0018] The beneficial effects of this utility model are that the injection unit support structure provided by this utility model is reasonably designed. On the one hand, the height of the injection support frame can be adjusted by using the adjustable sleeve component. On the other hand, the eccentric adjusting nut of the adjustable sleeve component can be used to drive the injection support frame as a whole to make a slight angle adjustment in the horizontal plane when positioning the injection support frame, thereby realizing the fine adjustment process of the injection unit nozzle, which facilitates the alignment and adjustment of the nozzle and the mold. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of an existing injection support frame with a relatively low height.

[0021] Figure 2 This is a schematic diagram of an existing injection support frame with a relatively high height.

[0022] Figure 3 This is a structural schematic diagram of the present invention (without a protective cover).

[0023] Figure 4 yes Figure 3 Sectional view of AA.

[0024] Figure 5 This is a structural schematic diagram of the present invention (with a protective cover).

[0025] Figure 6of Figure 5 Side view.

[0026] Figure 7 yes Figure 6 A cross-sectional view of BB.

[0027] Figure 8 yes Figure 7 Enlarged diagram of point C in the middle.

[0028] In the figure: 1. Injection support frame; 2. Locking nut; 3. Eccentric adjusting nut; 3-1. Lower eccentric section; 4. Stud; 5. Sleeve; 6. Positioning nut; 7. Fixing nut; 8. Connecting block; 9. Slider; 10. Protective cover; 11. Pressing wrench; 12. Friction block; 13. Locking positioning block; 14. Gap. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0030] Example 1:

[0031] like Figures 1 to 7 The injection unit support structure shown is an embodiment of this utility model.

[0032] The injection unit support structure is mounted on the injection molding machine frame and includes an injection support frame 1, a connecting block 8, and an adjustable sleeve 5. The injection support frame 1 supports the injection unit, and the adjustable sleeve 5 supports the injection support frame 1 and can be adjusted in both height and horizontal directions. The connecting block 8 is connected to the injection molding machine frame and supports and drives the adjustable sleeve 5 to slide on the injection frame.

[0033] For ease of installation, an adjustable sleeve 5 and a connecting block 8 are typically designed at the four corners of the injection support. The injection molding machine frame has two parallel guide rails along the sliding direction of the injection unit. The connecting block 8 has a slider 9 fixed at the bottom. The four connecting blocks 8 are grouped in pairs. The bottom slider 9 slides with the rails to drive the injection unit to slide along the guide rails.

[0034] Meanwhile, one of the four connecting blocks 8 has a locking and positioning device on its side. This device stops and positions the connecting block 8 against the injection molding machine frame, ensuring that it can be locked in place after sliding. The locking and positioning device includes a locking and positioning block 13, a friction block 12, and a pressure wrench 11. The locking and positioning block 13 is fixedly connected to the corresponding connecting block 8. The pressure wrench 11 is adjustablely mounted on the locking and positioning block 13. The friction block 12 is located at the lower end of the pressure wrench 11 and is controlled by the pressure wrench 11 to rub against the surface of the injection molding machine frame for a stop. The pressing and locking structure of the pressure wrench 11 is a commercially available quick-release clamp, which will not be described in detail here.

[0035] In height adjustment and horizontal deflection centering adjustment, the adjustment is achieved through the cooperation between the adjustable sleeve 5 and the connecting block 8. Specifically, the adjustable sleeve 5 is supported between the injection support frame 1 and the connecting block 8, and includes a stud 4, a sleeve 5, an eccentric adjusting nut 3, a fixing nut 7, a positioning nut 6, and a locking nut 2.

[0036] The connecting block 8 has a threaded mounting hole. A fixing nut 7 is located above the mounting hole on the connecting block 8. After the bottom of the stud 4 mates with the mounting hole, it is threadedly locked to the connecting block 8 by the fixing nut 7. A positioning nut 6 is threaded above the fixing nut 7 on the stud 4. The sleeve 5 is sleeved on the stud 4, and the lower end face of the sleeve 5 is supported by the positioning nut 6. A washer is provided between the positioning nut 6 and the sleeve 5.

[0037] In adjusting the height of the injection support frame 1, the height of the injection support frame 1 is adjusted by changing the support height of the sleeve 5. Specifically, in practice, for small height adjustments, a single set of studs 4 and sleeves 5 of the same height is sufficient. By adjusting the height of the positioning nut 6 relative to the stud 4, the sleeve 5 is raised or lowered, thus adjusting the height of the injection support frame 1. For larger height adjustments, studs 4 and sleeves 5 of different lengths can be directly replaced. That is, studs 4 and sleeves 5 of different heights need to be prepared during material preparation, and selected as needed during assembly. Compared to preparing multiple injection support frames 1, preparing multiple sets of studs 4 and sleeves 5 still saves on production and storage costs.

[0038] Above the sleeve 5, the injection support frame 1 is pressed and tightened against the sleeve 5 by the eccentric adjusting nut 3 and the locking nut 2. Specifically, as follows... Figure 8 As shown, the injection support frame 1 has a stepped hole, and the stud 4 extends from the upper end face of the stepped hole after passing through the sleeve 5. The lower end face of the injection support frame 1 is supported by the sleeve 5. The radial clearance of the eccentric adjusting nut 3 is at the upper end of the stud 4. The stud 4 is also threaded with a locking nut 2 above the eccentric adjusting nut 3 to position the eccentric adjusting nut 3 and the injection support frame 1.

[0039] In eccentric adjustment, this is achieved through the engagement of the stepped hole and the eccentric adjusting nut 3 with the injection support frame 1. The center of the radial section of the eccentric adjusting nut 3 is eccentrically positioned relative to the centerline of the stud 4, and the stepped hole is adapted to the shape of the eccentric adjusting nut 3. Therefore, when the eccentric adjusting nut 3 rotates relative to the stud 4, it can drive the injection support frame 1, which it engages with, to simultaneously perform angular fine adjustments in the horizontal direction.

[0040] Specifically, in the design of the stepped hole and the eccentric adjusting nut 3, the stepped hole is preferably designed as a three-stage stepped hole. From top to bottom, the three-stage stepped hole includes a large-diameter section, a medium-diameter section, and a small-diameter section with decreasing diameters. The small-diameter section has a diameter larger than the outer diameter of the stud 4. The eccentric adjusting nut 3 includes an upper fixed section and a lower eccentric section 3-1 with different outer diameters. The outer diameter of the lower eccentric section 3-1 matches the medium-diameter section of the three-stage stepped hole. When the eccentric adjusting nut 3 is threaded into the stud 4, the variable-diameter end face between the upper fixed section and the lower eccentric section 3-1 of the eccentric adjusting nut 3 abuts against the variable-diameter end face between the large-diameter section and the medium-diameter section of the three-stage stepped hole. Utilizing the multi-stage variable-diameter design of the stepped hole, on the one hand, a mating section with the eccentric adjusting nut 3 is formed during eccentric adjustment; on the other hand, it also provides a positioning and abutment end face for positioning during height adjustment.

[0041] In the length design of the stepped hole and the eccentric adjusting nut 3, to avoid wear between the lower end face of the eccentric adjusting nut 3 and the changing diameter end face of the stepped hole during thread adjustment, the length of the lower eccentric section 3-1 of the eccentric adjusting nut 3, which provides the stroke for eccentric adjustment, is less than the length of the middle diameter section. A gap 14 is formed between the changing diameter end face of the middle diameter section and the small diameter section of the three-stage stepped hole and the lower end face of the eccentric adjusting nut 3. This ensures that when the upper locking nut 2 presses and fixes the eccentric adjusting nut 3, the lower end face of the eccentric adjusting nut 3 always maintains a gap 14 with the changing diameter surface of the lower stepped hole, preventing contact friction and wear when the injection support frame 1 is rotated.

[0042] This injection unit support structure, designed in this way, effectively adjusts the height of the injection support frame 1 according to the height requirements by changing the support height of the sleeve 5. During the adjustment and positioning process of the nut and stud 4, the nut associated with the injection support frame 1 is designed as an eccentric adjusting nut 3. The rotation of the eccentric adjusting nut 3 causes the injection support frame 1 to be finely adjusted along the horizontal plane, thus meeting the usage requirements for centering and adjusting the nozzle of the injection unit. This support structure allows for both height adjustment of the injection support frame 1 using the adjustable sleeve 5 and, when positioning the height of the injection support frame 1, fine-tuning of the entire injection support frame 1 along the horizontal plane using the eccentric adjusting nut 3. This facilitates the fine-tuning of the injection unit nozzle, making it easier to center and adjust the nozzle and mold.

[0043] Example 2:

[0044] like Figure 5 , Figure 6 and Figure 7 The injection unit support structure shown is a second embodiment of this utility model. Based on the first embodiment, the second embodiment has a protective cover 10 detachably connected to the outer side of the injection support frame 1.

[0045] After the injection support frame 1 is lifted by the adjustable sleeve 5, an open area will be formed at the lower end of the injection support frame 1. The open area poses a safety risk. By setting the protective cover 10, entry into this risk area can be avoided, thus improving the protective effect.

[0046] In the actual design, since the sleeve 5 serves as a positioning support device, the height of the protective cover 10 can be adapted to the height of the sleeve 5. At the same time, it is set around the injection support frame 1 and can be detached and installed by bolts and nuts.

[0047] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An injection unit support structure, mounted on the frame of an injection molding machine, for supporting the injection unit, characterized in that: It includes an injection support frame, a connecting block, and an adjustable sleeve component; the connecting block is connected to the injection molding machine frame; the adjustable sleeve component is supported and disposed between the injection support frame and the connecting block, and includes a stud, a sleeve, and an eccentric adjusting nut; The connecting block has an installation hole, and a fixing nut is provided above the corresponding installation hole. After the bottom of the stud mates with the installation hole, it is locked and fixed to the connecting block by the fixing nut. The stud is threaded with a positioning nut above the fixing nut, and the sleeve is sleeved on the stud and the lower end face of the sleeve is supported by the positioning nut. The injection support frame has a stepped hole, the stud extends from the upper end face of the stepped hole after passing through the sleeve, and the lower end face of the injection support frame is supported by the sleeve. The eccentric adjusting nut is connected to the upper end of the stud, and the center of the radial section of the eccentric adjusting nut is eccentrically set relative to the center line of the stud. The stepped hole is adapted to the shape of the eccentric adjusting nut. The stud is also threadedly connected above the eccentric adjusting nut to a locking nut for positioning the eccentric adjusting nut and the injection support frame.

2. The injection unit support structure as described in claim 1, characterized in that: The stepped hole is a three-stage stepped hole, which includes a large-diameter section, a medium-diameter section, and a small-diameter section with decreasing diameters from top to bottom. The diameter of the small-diameter section is larger than the outer diameter of the stud. The eccentric adjusting nut comprises an upper fixed section and a lower eccentric section with different outer diameters from top to bottom. The outer diameter of the lower eccentric section is adapted to the middle diameter section of the three-stage stepped hole. When the eccentric adjusting nut is threaded with the stud, the diameter-changing end face between the upper fixed section and the lower eccentric section of the eccentric adjusting nut abuts against the diameter-changing end face between the large diameter section and the middle diameter section of the three-stage stepped hole.

3. The injection unit support structure as described in claim 2, characterized in that: The length of the lower eccentric section of the eccentric adjusting nut is less than the length of the middle diameter section, and a gap is formed between the variable diameter end face of the middle diameter section and the small diameter section of the three-stage stepped hole and the lower end face of the eccentric adjusting nut.

4. The injection unit support structure as described in claim 1, characterized in that: The injection molding machine frame is provided with a guide rail along the sliding direction of the injection unit, and the connecting block is provided with a slider fixed at the bottom, and the slider slides in cooperation with the rail.

5. The injection unit support structure as described in claim 4, characterized in that: At least one of the connecting blocks has a locking and positioning device on its side, which stops and positions the connecting block against the injection molding machine frame.

6. The injection unit support structure as described in claim 5, characterized in that: The locking and positioning device includes a locking and positioning block, a friction block, and a pressing wrench. The locking and positioning block is fixedly connected to the corresponding connecting block. The pressing wrench is adjustablely mounted on the locking and positioning block. The friction block is mounted at the lower end of the pressing wrench and is controlled by the pressing wrench to stop friction against the surface of the injection molding machine frame.

7. The injection unit support structure as described in claim 1, characterized in that: The outer side of the injection support frame is detachably connected to a protective cover.

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