Nozzle cleaning device of injection molding machine

Abstract

The utility model provides a nozzle cleaning device for an injection molding machine, which comprises a clamping part for clamping and fixing an injection molding nozzle; the supporting frame is arranged on one side of the clamping part, and a shaft hole is formed in the supporting frame; the main body shaft is installed on the supporting frame and penetrates through the shaft hole, and a spiral drill bit is arranged at the end, facing the clamping part, of the main body shaft; and the impact part is mounted on the main body shaft, is close to the other end of the main body shaft and is used for pushing the main body shaft along the axial direction. The device can be universally used for plastic nozzles with different lengths and diameter specifications as long as the spiral drill bit can be inserted into the plastic nozzles. And the spiral sliding groove structure of the spiral drill bit part is beneficial for discharging molten rubber materials when the molten rubber materials penetrate and enter, and is also beneficial for fully fusing the rubber materials with the top end part of equipment in a hard solid state, and the friction force is increased, so that the rubber materials are prevented from being separated from the injection molding nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a nozzle cleaning device for an injection molding machine. Background Art

[0002] Injection molding machine is also called injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity.

[0003] In the current injection molding industry, nozzle blockage of injection molding machines often occurs. The conventional cleaning method is to heat the nozzle, then use an iron rod to penetrate the molten rubber and dig out little by little, or after the rubber is cooled, continuously knock on the nozzle. Cleaning the nozzle is difficult and time-consuming, which seriously affects production. The conventional method of cleaning the nozzle of the injection molding machine takes a long time, generally 1h-2.5h, and is prone to burns. Utility Model Content

[0004] In order to solve the technical problem of low cleaning efficiency of the nozzle of an injection molding machine in the prior art, the utility model provides a nozzle cleaning device for an injection molding machine.

[0005] The technical solution adopted by the utility model is:

[0006] The utility model proposes a nozzle cleaning device for an injection molding machine, comprising:

[0007] A clamping part, which clamps and fixes the injection nozzle;

[0008] A support frame is arranged on one side of the clamping portion;

[0009] A main shaft is movably mounted on the support frame and can move axially, and a spiral drill bit is provided at one end of the main shaft facing the clamping portion;

[0010] The impact part is installed on the main shaft and close to the other end of the main shaft, and is used to drive the main shaft to move along the axial direction.

[0011] Furthermore, the end of the spiral drill bit is a spiral section, and the outer peripheral surface of the spiral section is provided with a plurality of guide grooves arranged along the length direction.

[0012] Preferably, a plurality of the guide grooves are evenly spaced along the outer circumference of the spiral segment.

[0013] Preferably, the guide groove is a V-shaped guide groove.

[0014] Furthermore, the spiral drill bit is detachably connected to the main shaft, a mounting seat is provided at one end of the main shaft, and the mounting end of the spiral drill bit is threadedly connected to the mounting seat.

[0015] Furthermore, the impact part is slidably connected to the main shaft, and a pair of blocking sheets are arranged on the main shaft to limit the sliding position of the impact part. The impact part hits the blocking sheets to drive the main shaft to move.

[0016] Furthermore, positioning holes are arranged at intervals on the main body shaft, and the blocking piece is limited by positioning pins installed on the positioning holes.

[0017] Furthermore, the support frame includes: a first support plate and a second support plate that are spaced apart from each other, and an axial hole through which the main body axis can pass is provided at relative positions of the first support plate and the second support plate.

[0018] Furthermore, the impact portion is disposed between the first support plate and the second support plate.

[0019] The utility model also comprises a bottom plate, and the clamping part and the supporting frame are both mounted on the bottom plate.

[0020] The utility model also comprises a bottom plate, and the clamping part and the supporting frame are both mounted on the bottom plate.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] 1. It can be used for plastic nozzles of different lengths and diameters. The spiral drill bit can be inserted into the plastic nozzle.

[0023] 2. The spiral groove structure of the spiral drill bit is not only conducive to the discharge of molten rubber when it penetrates, but also helps the rubber to fully merge with the top part of the equipment when it is in a hard solid state. The increased friction is conducive to blocking the rubber from escaping from the injection nozzle.

[0024] 3. The clamping part can avoid the hidden danger of scalding when the nozzle is heated, and is more convenient for water cooling, which can realize the rapid fusion and cooling of the rubber in the injection nozzle and the embedded part of the spiral drill bit, reducing the conventional heating and cooling time;

[0025] 4. By setting a sliding impact part, the main body is pushed to insert the spiral drill bit into the injection nozzle, which is convenient to operate and saves effort, and can achieve rapid separation of plastic and the nozzle in the glass state, reducing the difficulty of conventional glue digging. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a front view of an embodiment of the utility model;

[0028] Figure 2 It is a top view of an embodiment of the utility model;

[0029] Figure 3 It is a side view of an embodiment of the utility model;

[0030] Figure 4 This is a front view of the spiral drill bit in the embodiment of the utility model;

[0031] Figure 5 This is an end view of the spiral drill bit in the embodiment of the utility model;

[0032] 1. Clamping part;

[0033] 2. Support frame;

[0034] 21. First support plate; 22. Second support plate;

[0035] 3. Main axis;

[0036] 4. Impact part;

[0037] 41. an impact part and an impact seat; 42. an impact rod;

[0038] 51. a first blocking sheet; 52. a second blocking sheet;

[0039] 6. Injection nozzle;

[0040] 7. Auger drill bit;

[0041] 71. spiral section; 72. connecting section; 73. guide groove;

[0042] 8. Base plate. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] The principle and structure of the present utility model are described in detail below with reference to the accompanying drawings and embodiments.

[0045] In the current injection molding industry, injection molding machine nozzles are often blocked. The conventional cleaning method is to heat the nozzle, then use an iron rod to penetrate the molten rubber, and then dig out the molten rubber from the nozzle little by little; or after the rubber in the nozzle cools down, the nozzle is continuously knocked to create a gap between the solidified rubber and the nozzle, and then the rubber is cleared out. Both cleaning methods are very difficult and time-consuming. Generally, it takes 1h-2.5h for the operator to clean, and it is easy to cause burns.

[0046] In this regard, Figure 1 , 2 As shown in Figures 3 and 4, the utility model proposes an injection molding machine nozzle cleaning device, which specifically includes: a clamping part 1, a supporting part, a main shaft 3 and an impact part 4. A clamping groove is provided in the middle of the clamping part 1 to clamp the injection molding nozzle 6 so that the axis of the injection molding nozzle 6 is in a horizontal state; a support frame 2 is arranged on one side of the clamping part 1, facing the side opening side of the clamping groove, and an axial hole is provided on the support frame 2 for installing the main shaft 3; the main shaft 3 is installed on the support frame 2, and the main shaft 3 passes through the axial hole of the support frame 2, so that the main shaft 3 is supported by the support frame 2 in a horizontal state, and is basically in a coaxial state with the injection molding nozzle 6 after being clamped, and a spiral drill bit 7 is provided at one end of the main shaft 3 facing the clamping part 1; the impact part 4 is installed on the main shaft 3, close to the end of the main shaft 3 facing away from the clamping part 1, and the impact rod of the impact part 4 is perpendicular to the axis of the main shaft 3, so that the operator can push the main shaft 3 to move along its axial direction, and can also rotate the main shaft 3 around the axis of the main shaft 3.

[0047] After clamping and fixing the injection nozzle 6, the operator can push the impact part 4 to insert one end of the nozzle spiral drill bit 7 of the main shaft 3 into the injection nozzle 6, and then pull back the impact part 4 to pull the main shaft 3 toward the end facing away from the spiral drill bit 7, and pull out the part of the spiral drill bit 7 inserted into the injection nozzle 6 and the solidified plastic glue in the injection nozzle 6, so as to quickly clean the injection nozzle 6. The spiral drill bit 7 can help the glue to fully blend with it when it is in a hard solid state, and the increased friction between them is conducive to blocking the glue from escaping from the injection nozzle 6.

[0048] like Figure 4 , 5 As shown, in a specific embodiment, the spiral drill bit 7 is divided into multiple sections, one end of which is a spiral section 71, and the outer peripheral surface of the spiral section 71 is provided with multiple guide grooves 73 arranged along the axial direction or the length direction. By setting the guide grooves 73, when the spiral section 71 of the spiral drill bit 7 is inserted into the injection nozzle 6, the guide grooves 73 can help the rubber material and the molten material to be discharged when being penetrated by the spiral section 71.

[0049] In a specific embodiment, a plurality of guide grooves 73 are evenly spaced along the outer circumference of the spiral segment 71 , which not only facilitates the processing of the guide grooves 73 , but also disperses the stress and facilitates the discharge of the rubber and molten material when the spiral segment 71 penetrates.

[0050] In a specific embodiment, the guide groove 73 is a V-shaped guide groove 73, which facilitates the embedding and discharge of the rubber material and the molten material.

[0051] Specifically, the spiral drill bit 7 is detachably connected to the main shaft 3. The spiral drill bit 7 is specifically divided into a spiral section 71, a connecting rod section and a threaded section. The spiral section 71 is used to be inserted into the injection nozzle 6 and fixed together with the rubber and molten material in the injection nozzle 6. The connecting rod section is used to connect the threaded section and the spiral section 71, thereby improving the connection strength and reducing the processing difficulty of the spiral drill bit 7. A mounting seat is provided at one end of the main shaft 3, and a threaded hole is provided on the end face of the mounting column. The mounting end of the spiral drill bit 7, i.e., the threaded section, is threadedly connected to the mounting seat. The spiral drill bit 7 is convenient for disassembly and assembly. The spiral drill bit 7 needs to be cleaned in time after use. The spiral drill bit 7 is designed to be detachable from the main shaft 3 for easy cleaning and to reduce processing costs.

[0052] In a specific embodiment, the impact part is slidably connected to the main shaft, and a pair of blocking sheets are arranged on the main shaft to limit the sliding position of the impact part. When the impact part hits the blocking sheets, the main shaft is driven to move.

[0053] By providing a sliding impact part, the explosive force when the main shaft is pushed or pulled can be increased. At the same time, the main shaft can be pushed or pulled by multiple impacts, so that the spiral drill bit can be smoothly inserted into the injection nozzle, and the injection nozzle can be separated from the plastic material inside it by multiple pulling and impacts.

[0054] The impact part 4 includes an impact seat 42 and an impact rod 41. The impact seat 42 is columnar and has a mounting hole along the axial direction for passing the main shaft 3. Two impact rods are provided and vertically installed on the outer side of the impact seat. Specifically, the two impact rods can be in a straight line. By providing the impact part 4, it is convenient for the operator to rotate and pull the main shaft 3.

[0055] The blocking pieces on the main shaft 3 are specifically a first blocking piece 51 and a second blocking piece 52 . The impact part 4 is pushed toward the clamping part 1 until it contacts the first blocking piece 51 , and can also be pushed toward the direction away from the clamping part 1 until it contacts the second blocking piece 52 .

[0056] By setting the first blocking piece 51 and the second blocking piece 52 to limit, the impact force generated by the impact part 4 is directly transmitted to the main shaft through the blocking piece, and the impact surface of the impact part 4 is increased.

[0057] In a specific embodiment, the support frame 2 includes: a first support plate 21 and a second support plate 22, the first support plate 21 and the second support plate 22 are spaced apart and arranged vertically, and axial holes are provided at positions opposite to each other of the first support plate 21 and the second support plate 22, and the main shaft 3 passes through the axial holes of the two support plates, so that the axis of the main shaft 3 is kept in a horizontal state through the two support plates.

[0058] Specifically, the impact portion 4 is disposed between the first support plate 21 and the second support plate 22 .

[0059] The support plate makes the structure of the frame simple, which can support the main shaft 3 and has low maintenance cost. The impact part is located between the two support plates, and the weight on the main shaft can be evenly distributed to the support frame.

[0060] Specifically, positioning holes are arranged at intervals on the main shaft 3, and the first blocking piece 51 and the second blocking piece 52 are limited by positioning pins installed on the positioning holes. The limiting pin of the first blocking piece 51 is fixed on the left side thereof, and the limiting pin of the second blocking piece 52 is fixed on the right side thereof. Positioning the blocking piece by the limiting pin can reduce the difficulty of installing the blocking piece.

[0061] In addition, the position of the first blocking piece 51 can be adjusted by installing positioning pins on different positioning holes, so that the axial movement stroke of the main shaft 3 can be adjusted to adapt to different insertion depths.

[0062] Specifically, the method of positioning the blocking piece with the positioning pin can be to set a threaded hole (i.e. the positioning hole mentioned above) on the main shaft 3 to install the positioning pin, and the middle part of the blocking piece is provided with a through hole so that the blocking piece is directly sleeved on the main shaft. In addition, other methods can also be used for fixed installation.

[0063] The utility model further comprises a bottom plate 8, and the clamping part 1 and the support frame 2 are both mounted on the same bottom plate 8. It is convenient to position the clamping part 1 and each mounting plate of the support frame 2 during installation.

[0064] Specifically, the clamping portion 1 is specifically divided into two clamping blocks, the gap between the two clamping blocks is a clamping groove, and the opposite sides of the two clamping blocks are provided with depressions corresponding to the injection nozzle 6, so that the injection nozzle 6 can be stably clamped, and the two clamping blocks are connected by a screw. Rotating the rotating handle 11 at the end of the screw can bring the two clamping blocks closer, thereby clamping and fixing the injection nozzle 6.

[0065] The specific use process of the device proposed by the utility model is as follows:

[0066] When the injection nozzle 6 is blocked, the blocked injection nozzle 6 is placed on the clamping part 1 , and the blocked injection nozzle 6 is fixed on the clamping part 1 by rotating the rotating handle of the clamping part 1 .

[0067] Specifically, if the plastic material in the injection nozzle 6 is in a hard solid state, it is necessary to use a spray gun to heat the injection nozzle 6 until the plastic material in the injection nozzle 6 becomes a soft viscous flow state;

[0068] If the blocked injection nozzle 6 is in a viscous flow state, the injection nozzle 6 is directly fixed on the clamping part 1, and the injection nozzle 6 and the main body shaft 3 are kept in a straight line as much as possible.

[0069] The operator slides the impact part 4 toward the first blocking piece 51. Under the action of the first blocking piece 51, the spiral drill bit 7 and the main shaft 3 move toward the injection nozzle 6 as a whole until the spiral drill bit 7 is embedded in the molten colloid.

[0070] The injection nozzle 6 where the spiral drill bit 7 has been embedded is quickly cooled with water until the rubber material in the injection nozzle 6 becomes a hard solid state;

[0071] Then, the collision part 4 is quickly slid toward the second blocking piece 52 to collide with the second blocking piece 52 .

[0072] Under the impact of the impact part 4, the spiral drill bit 7 at the end of the main shaft 3 and the hard solid rubber material wrapped around the spiral drill bit 7 will be pulled out together and move in the direction away from the clamping part 1;

[0073] Since the injection nozzle 6 is fixed by the clamping part 1 and its position relative to the bottom plate 8 remains unchanged, the injection nozzle 6 is separated from the solid rubber material blocking the nozzle.

[0074] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0075] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0076] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0077] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0078] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0079] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A nozzle cleaning device for an injection molding machine, characterized in that: include: A clamping part, clamping and fixing the injection nozzle; A support frame is arranged on one side of the clamping portion; A main shaft is movably mounted on the support frame and can move axially, and a spiral drill bit is provided at one end of the main shaft facing the clamping portion; The impact part is installed on the main shaft and close to the other end of the main shaft, and is used to drive the main shaft to move along the axial direction.

2. The nozzle cleaning device for an injection molding machine according to claim 1, characterized in that: The end of the spiral drill bit is a spiral section, and the outer peripheral surface of the spiral section is provided with a plurality of guide grooves arranged along the length direction.

3. The nozzle cleaning device for an injection molding machine according to claim 2, characterized in that: A plurality of guide grooves are evenly spaced along the outer circumference of the spiral section.

4. The nozzle cleaning device for an injection molding machine according to claim 2, characterized in that: The guide groove is a V-shaped guide groove.

5. The nozzle cleaning device for an injection molding machine according to claim 1, characterized in that: The spiral drill bit is detachably connected to the main body shaft, a mounting seat is provided at one end of the main body shaft, and the mounting end of the spiral drill bit is threadedly connected to the mounting seat.

6. The nozzle cleaning device for an injection molding machine according to claim 1, characterized in that: The impact part is slidably connected to the main shaft, and a pair of blocking sheets are arranged on the main shaft at intervals to limit the sliding position of the impact part. The impact part hits the blocking sheets to drive the main shaft to move.

7. The nozzle cleaning device for an injection molding machine according to claim 6, characterized in that: Positioning holes are arranged at intervals on the main body shaft, and the blocking piece is limited by positioning pins installed on the positioning holes.

8. The nozzle cleaning device for an injection molding machine according to claim 1, characterized in that: The support frame comprises: a first support plate and a second support plate which are spaced apart from each other, and shaft holes which can pass through the main body shaft are arranged at opposite positions of the first support plate and the second support plate.

9. The nozzle cleaning device for an injection molding machine according to claim 8, characterized in that: The impact portion is disposed between the first support plate and the second support plate.

10. The nozzle cleaning device for an injection molding machine according to claim 1, characterized in that: It also includes a bottom plate, and the clamping portion and the supporting frame are both mounted on the bottom plate.

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