Injection molding device of rubber roller

Abstract

The utility model relates to the technical field of rubber covered roller forming, and discloses a rubber covered roller injection molding device which comprises an upper injection molding die, a lower injection molding die and a rubber covered roller product, the upper injection molding die comprises an upper die body, an injection molding port and a transmission rack, a first forming space is formed in the bottom of the upper die body, and a second forming space is formed in the bottom of the lower die body. The injection molding port and the transmission rack are both installed on the top of the upper mold body, the injection molding port communicates with the first forming space, and the lower injection molding mold comprises a lower mold body, a lower mold frame and a hydraulic transmission rod. After the upper injection molding mold and the lower injection molding mold are combined for use, the processing requirement of injection molding of a rubber roller product can be met, and the lower mold main body and the lower mold frame body can be driven by the hydraulic transmission rod to lift and reset in a reciprocating manner, so that a sufficient material taking space is exposed out of the molded rubber roller product; therefore, taking and placing operation is facilitated, and the problems in the prior art are fully solved.

Description

An injection molding device for rubber rollers Technical Field

[0001] This utility model relates to the field of rubber roller forming technology, specifically to an injection molding device for rubber rollers. Background Technology

[0002] The current injection molding method involves directly injecting rubber material into a mold through an injection molding machine barrel, where it is immediately vulcanized into the product. The rubber injection molding machines used include screw type, plunger type, reciprocating screw type, and screw pre-plasticizing plunger type equipment. In practical use, these machines can make the rubber material exhibit good fluidity and fast vulcanization. Compared with the general molding method, the injection molding method allows the rubber material to vulcanize into the finished product immediately after entering the mold, reducing manual labor and increasing productivity. Therefore, it is used in the production of many products, such as rubber shoes, sealing products, and rubber rollers.

[0003] However, after extensive practical experience, the applicant discovered that the existing rubber injection molding machine's associated injection molding die is prone to jamming and sticking after injection molding due to factors such as high pressure and small die clearance. This not only hinders material handling but also impedes the improvement of production efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an injection molding device for rubber rollers, which solves the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: an injection molding device for a rubber roller, comprising an upper injection mold, a lower injection mold, and a rubber roller product. The upper injection mold includes an upper mold body, an injection port, and a transmission frame. A first molding space is provided at the bottom of the upper mold body. The injection port and the transmission frame are both installed on the top of the upper mold body, and the injection port communicates with the first molding space.

[0006] The injection molding die includes a lower mold body, a lower mold frame, and a hydraulic transmission rod. The lower mold body is snapped into the interior of the lower mold frame, and the hydraulic transmission rod is fitted inside the lower mold frame and connected to the bottom of the lower mold body. The lower mold body can reciprocate and adjust its height inside the lower mold frame under the transmission of the hydraulic transmission rod.

[0007] The top of the lower mold body has a second molding space, and both ends of the second molding space have a third molding space coaxial with itself. The two third molding spaces are respectively opened in the top structure on both sides of the lower mold frame. After the upper mold body, lower mold frame and lower mold body are closed, the two third molding spaces, the second molding space and the first molding space can form an injection cavity for the rubber roller product.

[0008] Preferably, a support sleeve plate is fixed to the top inner wall of the lower mold frame, and a guide rod fixed to the bottom surface of the lower mold body is snapped into one end of the support sleeve plate. The guide rod adopts an inverted T-shaped structure.

[0009] Preferably, the number of support sleeves and the number of guide rods are both four, and the four guide rods and the four support sleeves are respectively set on the four corners of the bottom of the lower mold body and on the inner walls of the four corners of the top of the lower mold frame.

[0010] Preferably, the top structure of the lower mold frame is provided with an annular cooling space that surrounds the lower mold body, and transition pipes are installed at both the front and rear ends of one side of the top of the lower mold frame, and both transition pipes are connected to the annular cooling space.

[0011] Preferably, the ends of the two transition tubes furthest from the lower mold frame are both configured as flange structures, and both transition tubes are made of thermally conductive material.

[0012] Preferably, a transparent sealing plate is fitted on the inner top of the lower mold frame, which can cover and seal the joint gaps between the lower mold body and the lower mold frame.

[0013] Selectedly, the transparent sealing plate includes two semi-open composite frame plates, and the rear end of one semi-open composite frame plate and the front end of the other semi-open composite frame plate can be assembled and provided with a locking component. The locking component includes a screw, which can pass through the bottom structure of the rear end of one semi-open composite frame plate and the front end structure of the other semi-open composite frame plate and is then screwed and locked with a nut.

[0014] The inner walls of the front and rear ends of the top of the lower mold frame are provided with threaded holes, and the surfaces of the two semi-open composite frame plates are fixed with ear plates, and the ear plates and the corresponding threaded holes can be installed and fixed by screws.

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

[0016] 1. By combining the upper and lower injection molds, this utility model can not only meet the processing requirements of injection molding of rubber roller products, but also enable the lower mold body and lower mold frame to reciprocate and reset by hydraulic transmission rod, so that the molded rubber roller products have sufficient material picking space, which facilitates picking and placing operations and fully solves the problems existing in the prior art.

[0017] 2. This utility model, through the combination of the annular cooling space, two transition pipes and the injection molding die, can provide an extended function of auxiliary cooling for the injection molding die, thereby shortening the molding cooling time of the rubber roller product and improving production efficiency.

[0018] 3. This utility model fully covers and shields the gaps between the lower mold body and the lower mold frame by setting transparent sealing plates, and the two transparent semi-open combined frame plates can provide users with direct visual inspection conditions, further improving the user's control over the overall device. Attached Figure Description

[0019] Figure 1 is a three-dimensional schematic diagram of the structure of this utility model;

[0020] Figure 2 is a schematic diagram of the membrane ejection structure of this utility model;

[0021] Figure 3 is a bottom view of the mold body in the structure of this utility model;

[0022] Figure 4 is a partial cross-sectional schematic diagram of the annular cooling space of the present invention;

[0023] Figure 5 is a bottom view of the structural transition tube of this utility model;

[0024] Figure 6 is a top view of the transparent sealing plate of the structural ring of this utility model;

[0025] Figure 7 is a right-side view of the transparent sealing plate component of this utility model.

[0026] In the diagram: 1. Upper mold body; 2. First molding space; 3. Injection port; 4. Transmission frame; 5. Lower mold body; 6. Lower mold frame; 7. Second molding space; 8. Third molding space; 9. Hydraulic transmission rod; 10. Guide rod; 11. Support plate; 12. Transition pipe; 13. Annular cooling space; 14. Rubber roller product; 15. Transparent sealing plate; 151. Semi-open combination frame plate; 152. Screw; 153. Nut. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please refer to Figures 1-3. A rubber roller injection molding device includes an upper injection mold, a lower injection mold, and a rubber roller product 14. The upper injection mold includes an upper mold body 1, an injection port 3, and a transmission frame 4. A first molding space 2 is provided at the bottom of the upper mold body 1. The injection port 3 and the transmission frame 4 are both installed on the top of the upper mold body 1, and the injection port 3 communicates with the first molding space 2.

[0029] The injection molding die includes a lower mold body 5, a lower mold frame 6, and a hydraulic transmission rod 9. The lower mold body 5 is snapped into the interior of the lower mold frame 6, and the hydraulic transmission rod 9 is fitted inside the lower mold frame 6 and connected to the bottom of the lower mold body 5. The lower mold body 5 can reciprocate and adjust its height inside the lower mold frame 6 under the transmission of the hydraulic transmission rod 9.

[0030] The top of the lower mold body 5 is provided with a second forming space 7, and both ends of the second forming space 7 are provided with a third forming space 8 that is coaxial with itself. The two third forming spaces 8 are respectively opened in the top structure on both sides of the lower mold frame 6. The two third forming spaces 8, the second forming space 7, and the first forming space 2 can form an injection cavity for the rubber roller product 14 after the upper mold body 1, the lower mold frame 6, and the lower mold body 5 are closed.

[0031] In use, the roller core is snapped between the two third molding spaces 8. Then, the existing lifting equipment and transmission frame 4 are used to drive and link the upper mold body 1, injection port 3, and transmission frame 4 to automatically close and adjust with the lower mold frame 6 and lower mold body 5 under the transmission of the lifting equipment. The lifting equipment includes the existing hydraulic rod. After the upper mold body 1 closes with the lower mold frame 6 and lower mold body 5, the first molding space 2, together with the two third molding spaces 8 and the second molding space 7, forms an injection cavity for the roller core injection. The subsequent rubber material is guided into the injection cavity through the injection port 3, and then covers the corresponding structure on the second molding space 7. After cooling, a complete rubber roller product 14 is formed.

[0032] After the rubber roller product 14 is fully formed, the upper mold body 1, injection port 3, and transmission frame 4 are reset using the lifting equipment. Then, the hydraulic transmission rod 9 is activated, which drives the formed rubber roller product 14 inside the lower mold body 5 and the second forming space 7 to automatically move away from the lower mold frame 6. After completion, space is made for the removal and placement of the formed rubber roller product 14. Then, the rubber roller product 14 can be directly removed from the inside of the second forming space 7. This solves the problems existing in the prior art.

[0033] Please refer to Figures 1 and 3. A support sleeve 11 is fixed to the inner top wall of the lower mold frame 6. One end of the support sleeve 11 is internally connected to a guide rod 10 fixed to the bottom surface of the lower mold body 5. The guide rod 10 adopts an inverted T-shaped structure. The number of support sleeves 11 and guide rods 10 are both four. The four guide rods 10 and the four support sleeves 11 are respectively set on the four corners of the bottom of the lower mold body 5 and on the inner walls of the four corners of the top of the lower mold frame 6.

[0034] During use, considering the alignment accuracy during the reciprocating snap-fit ​​assembly of the lower mold body 5 and the lower mold frame 6, the snap-fit ​​guidance of the four guide rods 10 and their corresponding support sleeves 11 is used for protection. Even if the snap-fit ​​gap between the lower mold body 5 and the lower mold frame 6 is large and some adhesive material seeps into the gap, for the formed rubber roller product 14, the overflowing adhesive material is located at the end corner, which can be eliminated simultaneously after chamfering.

[0035] Please refer to Figures 1 and 4-5. The top structure of the lower mold frame 6 is provided with an annular cooling space 13 that surrounds the lower mold body 5. Transition pipes 12 are installed at both the front and rear ends on one side of the top of the lower mold frame 6. Both transition pipes 12 are connected to the annular cooling space 13. The ends of the two transition pipes 12 away from the lower mold frame 6 are both set as flange structures. Both transition pipes 12 are made of thermally conductive material.

[0036] When using it, considering the cooling problem during the molding process of the rubber roller product 14, the existing pumping equipment can be connected to the two transition pipes 12. Then, during the heat dissipation process of the rubber roller product 14 molding, the pumping equipment can accelerate the heat dissipation speed of the rubber roller product 14 by using two reciprocating flows of cold water inside the annular cooling space 13.

[0037] Please refer to Figures 6-7. A transparent sealing plate 15 is fitted on the inner top of the lower mold frame 6. The transparent sealing plate 15 can cover and seal the gap between the lower mold body 5 and the lower mold frame 6. The transparent sealing plate 15 includes two semi-open combination frame plates 151. The rear end of one semi-open combination frame plate 151 and the front end of the other semi-open combination frame plate 151 can be assembled and equipped with a locking component. The locking component includes a screw 152. The screw 152 can penetrate the bottom structure of the rear end of one semi-open combination frame plate 151 and the front end structure of the other semi-open combination frame plate 151 and then screw-lock with a nut 153. Threaded holes are opened on the inner walls of the front and rear ends of the top of the lower mold frame 6. Ear plates are fixed on the surface of the two semi-open combination frame plates 151, and the ear plates can be installed and fixed to the corresponding threaded holes by screws.

[0038] In use, considering the issue of preventing leakage at the joint between the lower mold body 5 and the lower mold frame 6, a transparent sealing plate 15 is used to completely cover and shield the joint between the lower mold body 5 and the lower mold frame 6. The two semi-open combined frame plates 151 that are transparent can provide users with direct visual inspection conditions, further enhancing the user's control over the overall device.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Additionally, in the accompanying drawings of this utility model, the fill patterns are merely for distinguishing layers and do not constitute any other limitation.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rubber roller injection molding apparatus, comprising an upper injection mold, a lower injection mold, and a rubber roller product (14), characterized in that: The upper injection mold includes an upper mold body (1), an injection port (3), and a transmission frame (4). The bottom of the upper mold body (1) is provided with a first molding space (2). The injection port (3) and the transmission frame (4) are both installed on the top of the upper mold body (1), and the injection port (3) is connected to the first molding space (2). The lower injection mold includes a lower mold body (5), a lower mold frame (6), and a hydraulic transmission rod (9). The lower mold body (5) is snapped into the interior of the lower mold frame (6), and the hydraulic transmission rod (9) is fitted inside the lower mold frame (6) and connected to the bottom of the lower mold body (5). The body (5) can be reciprocated and adjusted inside the lower mold frame (6) under the transmission of the hydraulic transmission rod (9); a second molding space (7) is opened in the top of the lower mold body (5), and a third molding space (8) with the same central axis is provided at both ends of the second molding space (7). The two third molding spaces (8) are respectively opened in the top structure on both sides of the lower mold frame (6), and the two third molding spaces (8), the second molding space (7), and the first molding space (2) can form an injection cavity for the rubber roller product (14) after the three structures of the upper mold body (1), the lower mold frame (6), and the lower mold body (5) are closed.

2. The injection molding apparatus for a rubber roller according to claim 1, characterized in that: The upper inner wall of the lower mold frame (6) is fixed with a support sleeve (11), and one end of the support sleeve (11) is fitted with a guide rod (10) fixed to the bottom surface of the lower mold body (5). The guide rod (10) adopts an inverted T-shaped structure.

3. The injection molding apparatus for a rubber roller according to claim 2, characterized in that: The number of the support sleeve (11) and the number of the guide rod (10) are both four, and the four guide rods (10) and the four support sleeves (11) are respectively set on the four corners of the bottom of the lower mold body (5) and on the inner walls of the four corners of the top of the lower mold frame (6).

4. The injection molding apparatus for a rubber roller according to claim 1, characterized in that: The top structure of the lower mold frame (6) is provided with an annular cooling space (13) that can surround the lower mold body (5), and the front and rear ends of the top side of the lower mold frame (6) are equipped with transition pipes (12), and both transition pipes (12) are connected to the annular cooling space (13).

5. The injection molding apparatus for a rubber roller according to claim 4, characterized in that: Both transition tubes (12) are configured with flange structures at the ends away from the lower mold frame (6), and both transition tubes (12) are made of thermally conductive material.

6. The injection molding apparatus for a rubber roller according to claim 1, characterized in that: A transparent sealing plate (15) is fitted on the inner top of the lower mold frame (6), which can cover and seal the joint gaps of the lower mold body (5) and the lower mold frame (6).

7. The injection molding apparatus for a rubber roller according to claim 6, characterized in that: The transparent sealing plate (15) includes two semi-open composite frame plates (151), and the rear end of one semi-open composite frame plate (151) and the front end of the other semi-open composite frame plate (151) can be assembled and provided with locking components. The locking components include screws (152), which can penetrate the bottom structure of the rear end of one semi-open composite frame plate (151) and the front end structure of the other semi-open composite frame plate (151) and then be screwed and locked with nuts (153). The inner walls of the front and rear ends of the top of the lower mold frame (6) are provided with threaded holes. The surfaces of the two semi-open composite frame plates (151) are fixed with ear plates, and the ear plates and the corresponding threaded holes can be installed and fixed by screws.

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