Inclined side pulling mold driven by oil cylinder

Abstract

The utility model discloses an inclined side pulling die driven by an oil cylinder. The inclined side pulling die comprises a lower die base and an upper die base, a guide column is arranged on the lower die base, guide sleeves are arranged at four corners of the upper die base, positioning limiting blocks are arranged at four edges of the upper die base, and a positioning limiting groove is formed in the lower die base; a group of upper dies are fixed on the upper die holder, and a group of lower dies matched with the upper dies respectively are fixed on the lower die holder; an injection molding square hole and round hole side pulling mechanism is mounted on the upper mold base, and an arc block injection molding core inclined pulling mechanism is mounted on the lower mold base; a push plate is arranged on the lower mold base, push rods for pushing the upper mold base to move upwards are fixed to the four corners of the push plate, a second hydraulic oil cylinder for driving the push plate to move up and down is fixed to the lower mold base, and an injection molding channel communicated with the upper mold is formed in the upper mold base. The injection mold can be used for integrally producing complex injection molded parts in batches, and is high in efficiency, high in precision and worthy of popularization and application.

Description

Technical Field

[0001] This utility model relates to the field of molds, and in particular to a hydraulically driven inclined side-pulling mold. Background Technology

[0002] In the automotive industry, numerous mounting brackets are needed to support vehicle piping or cables. Due to the spatial layout of automobiles, these brackets require holes at different angles and support positions with rounded blocks. Traditionally, the development of such mounting brackets has been quite difficult because these types of brackets (such as...) Figure 7 As shown, the part not only has lateral square holes and lateral round holes, but also multi-dimensional arc blocks, which greatly increases the difficulty of injection molding. The traditional approach is usually to use a distributed process, that is, to first inject and mold the arc blocks and the whole, then move the injection cores on both sides laterally, and then eject the injection part longitudinally. The next step is to mill and drill the lateral square holes and round holes on the injection part a second time, which adds a lot of processes and greatly increases the production cost. Moreover, due to the use of multi-process processing, the corresponding accuracy will also decrease. Therefore, there is an urgent need in the market for a mold that can integrally inject and mold pipeline fixing brackets to improve production efficiency, production accuracy and reduce production costs. Utility Model Content

[0003] This invention aims to overcome the shortcomings of the prior art by providing a hydraulically driven inclined side-drawing mold capable of one-time injection molding of multi-directional holes and arc surfaces in space. This satisfies the requirements of one-time injection molding of multi-directional holes and parts with arc surfaces, low production cost, and high injection efficiency.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: This hydraulically driven inclined side-pulling mold includes a lower mold base and an upper mold base. Guide pillars are fixed at the four corners of the lower mold base, and guide sleeves that mate with the guide pillars are fixed at the four corners of the upper mold base. Positioning and limiting blocks are fixed on all four sides of the upper mold base. Positioning and limiting grooves that respectively mate with each positioning and limiting block are opened on the lower mold base. A set of upper molds is fixed on the upper mold base, and a set of lower molds respectively paired with each upper mold are fixed on the lower mold base. An injection square hole and round hole side-pulling mechanism is installed on the upper mold base, and an arc block injection core inclined pulling mechanism is installed on the lower mold base. The injection square hole and round hole side-pulling mechanism includes a moving block inserted into the lower mold. Side blocks are fixed on each moving block, and square blocks are fixed to the outer end faces of the side blocks. The inner and outer ends of the movable block are fixed with transverse cylindrical rods, and the movable block has oblique holes. The upper mold has an oblique rod that mates with the oblique holes. The arc block injection core oblique pulling mechanism includes a support fixed on the lower mold base. The lower mold has an oblique slot, and a pin is inserted into the oblique slot. The top of the pin is fixed with the arc block injection core. A pull block is inserted into the lower mold base. The pull block has an oblique guide groove. The bottom of the pin is fixed with a locking block that mates with the oblique guide groove. The support has a first hydraulic cylinder that drives the pull block to move. The lower mold base is provided with a push plate. The four corners of the push plate are fixed with push rods that push the upper mold base to move upward. The lower mold base has a second hydraulic cylinder that drives the push plate to move up and down. The upper mold base has an injection channel that communicates with the upper mold. The guide pillars and guide sleeves here guide the up-and-down movement of the upper mold base and upper mold seat, improving accuracy. The positioning limit blocks and positioning limit grooves here prevent lateral movement when the upper mold base closes to the lower mold base, improving injection molding accuracy. The upper mold and lower mold provide the injection cavity. The side-pulling mechanism for injection square and round holes can machine the square and round holes on the pipeline fixing bracket. The oblique pulling mechanism for the arc block injection core can machine the arc block on the pipeline fixing bracket. The push plate, push rod, and second hydraulic cylinder here move the upper mold base up and down, leaving space between the upper and lower mold bases to facilitate the ejection of the injection molded parts. The injection channel here provides an injection channel, allowing multiple pipeline fixing bracket injection parts to be injection molded simultaneously on one mold.

[0005] Further improvements include a set of ejector pins fixed to the push plate, which are inserted into the lower mold base and used to eject the molded injection part. The function of these ejector pins is to allow the cooled injection part to be ejected from the cavity of the lower mold, thereby improving material ejection efficiency.

[0006] Further improvements include a fixed alignment block on the upper mold, with a slanted pressure surface on the alignment block, and an inclined surface on the moving block that mates with the slanted pressure surface. The function of the alignment block, slanted pressure surface, and inclined surface is to ensure that when the upper mold closes to the lower mold, the slanted pressure surface presses firmly against the inclined surface on the moving block, preventing the moving block from shifting during injection molding, thereby improving the precision of the injection molded part (e.g., ...). Figure 6 (As shown).

[0007] Further improvements include the addition of vertical blocks fixed to all four sides of the upper mold base for limiting the outward movement of the pull block, with channels at the bottom of these blocks. The function of these vertical blocks is to press the sides of the pull block firmly when the upper mold is pressed against the lower mold, ensuring the accurate positioning of the arc-shaped injection core. This prevents the arc-shaped injection core from deviating during injection molding, resulting in higher precision in the molded part. The channels facilitate the passage of the connecting rod between the piston rod of the first hydraulic cylinder and the pull block (e.g.,...). Figure 5 (As shown).

[0008] Further improvements include a positioning block fixed to the bottom side of the upper mold, and a positioning groove that mates with the positioning block at the top of the lower mold. The purpose of the positioning block and the positioning groove is to quickly and accurately align the upper and lower molds, preventing misalignment during mating and ensuring the precision of the injection molded parts is maintained.

[0009] Further improvements include the addition of cooling circulation channels in both the upper and lower molds. The purpose of these cooling circulation channels is to accelerate the cooling and molding of the injection molded parts, thereby improving the efficiency of the injection molding process.

[0010] Further improvements include the addition of a self-lubricating layer on the surfaces of the angled slot and the angled guide groove. This self-lubricating layer ensures smooth movement and minimizes frictional resistance when the insert is moved obliquely using the pull block, preventing jamming. This self-lubricating layer is made of tin bronze.

[0011] The beneficial effects of this utility model are:

[0012] 1) Guide pillars and guide sleeves enable precise matching between the upper mold base and the lower mold base;

[0013] 2) The upper and lower molds form an injection cavity, which is then used to injection mold the part.

[0014] 3) The injection molding square and round hole side-pulling mechanism can process square and round holes in one operation;

[0015] 4) The arc block injection core oblique extraction mechanism can perform one-time injection molding of the arc block on the injection molded part;

[0016] 5) The ejector pins can push the molded injection parts upwards, making them easy to pick up. Attached Figure Description

[0017] Figure 1 The three-dimensional representation of this utility model Figure 1 ;

[0018] Figure 2 The three-dimensional representation of this utility model Figure 2 ;

[0019] Figure 3 The three-dimensional representation of this utility model Figure 3 ;

[0020] Figure 4 This is a perspective view of the area of ​​the arc block injection core oblique extraction mechanism and the injection square hole and round hole side extraction mechanism in this utility model;

[0021] Figure 5 for Figure 1 AA cross-section view;

[0022] Figure 6 for Figure 1 BB cross-section;

[0023] Figure 7 This is a perspective view of the second hydraulic cylinder area in this utility model;

[0024] Figure 8 This is a three-dimensional cross-sectional view of the cooling circulation channel area of ​​the upper mold in this utility model;

[0025] Figure 9 This is a cross-sectional perspective view of the cooling circulation channel area of ​​the lower mold in this utility model.

[0026] Figure 10 For the explosion of this utility model Figure 1 ;

[0027] Figure 11 For the explosion of this utility model Figure 2 ;

[0028] Figure 12 For the explosion of this utility model Figure 3 ;

[0029] Figure 13 This is a perspective view of the pipeline fixing bracket produced by this utility model.

[0030] Explanation of reference numerals in the attached drawings: Lower mold base 1, guide post 1-1, positioning and limiting groove 1-2, lower mold 1-3, arc block injection core oblique pulling mechanism 1-4, support 1-4a, insert post 1-4b, locking block 1a-4b, arc block injection core 1-4c, pull block 1-4d, oblique guide slot 1a-4d, first hydraulic cylinder 1-4e, self-lubricating layer 1-5, upper mold base 2, guide sleeve 2-1, positioning and limiting block 2-2, upper mold 2-3, injection square hole and round hole side pulling mechanism 2-4, Alignment block 2-4a, Inclined pressure surface 2a-4a, Moving block 2-4b, Inclined surface 2a-4b, Side block 2-4c, Square block 2-4d, Horizontal cylindrical rod 2-4e, Inclined hole 2-4f, Inclined rod 2-4g, Injection channel 2-5, Vertical block 2-6, Push rod 2-7, Push plate 3, Second hydraulic cylinder 4, Ejector pin 5, Cooling circulation channel 6, Pipeline fixing bracket 7, Arc block 7-1, Square hole 7-2, Round hole 7-3, Clamping protrusion 7-4. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] Referring to the attached diagram: This hydraulically driven inclined side-drawing mold includes a lower mold base 1 and an upper mold base 2. Guide pillars 1-1 are fixed at each of the four corners of the lower mold base 1. Guide sleeves 2-1 that mate with the guide pillars 1-1 are fixed at each of the four corners of the upper mold base 2. Positioning and limiting blocks 2-2 are fixed on each of the four sides of the upper mold base 2. Positioning and limiting grooves 1-2 are formed on the lower mold base 1 to respectively mate with each positioning and limiting block 2-2. A set of upper molds 2-3 is fixed on the upper mold base 2, and a set of upper molds 2-3 is fixed on the lower mold base 1 respectively mate with each upper mold 2-3. 3. Paired lower molds 1-3; an injection square hole and round hole side-pulling mechanism 2-4 is installed on the upper mold base 2, and an arc block injection core oblique pulling mechanism 1-4 is installed on the lower mold base 1; the injection square hole and round hole side-pulling mechanism 2-4 includes a movable block 2-4b inserted into the lower mold 1-3, a side block 2-4c fixed on each movable block 2-4b, a square block 2-4d fixed on the outer end face of the side block 2-4c, and a transverse cylindrical rod 2-4e fixed on both the inner and outer ends of the movable block 2-4b. A slanted hole 2-4f is opened on 2-4b, and a slanted rod 2-4g that mates with the slanted hole 2-4f is fixed on the upper mold 2-3; the arc block injection core slanted pulling mechanism 1-4 includes a support 1-4a fixed on the lower mold base 1, a slanted slot 1-3a is opened on the lower mold 1-3, a pin 1-4b is inserted into the slanted slot 1-3a, an arc block injection core 1-4c is fixed at the top of the pin 1-4b, a pull block 1-4d is inserted into the lower mold base 1, and a slanted guide groove 1a is opened on the pull block 1-4d. -4d, the bottom end of the insert post 1-4b is fixed with a locking block 1a-4b that is inserted and engaged with the inclined guide slot 1a-4d. The support 1-4a is fixed with a first hydraulic cylinder 1-4e that drives the pull block 1-4d to move. The lower mold base 1 is provided with a push plate 3. The four corners of the push plate 3 are fixed with push rods 2-7 that push the upper mold base 2 to move upward. The lower mold base 1 is fixed with a second hydraulic cylinder 4 that drives the push plate 3 to move up and down. The upper mold base 2 has an injection channel 2-5 that communicates with the upper mold 2-3.

[0033] A set of ejector pins 5 are fixed on the ejector plate 3 and inserted into the lower mold base 1 for ejecting the molded injection part.

[0034] The upper mold 2-3 is fixed with an alignment block 2-4a, which has an inclined pressure surface 2a-4a. The moving block 2-4b has an inclined surface 2a-4b that cooperates with the inclined pressure surface 2a-4a.

[0035] The upper mold base 2 has vertical blocks 2-6 fixed on all four sides for limiting the outward movement of the pull block 1-4d. The bottom end of the vertical block 2-6 has a channel 2-6a.

[0036] A positioning block 2-3a is fixed at the bottom side of the upper mold 2-3, and a positioning groove 1-3b that mates with the positioning block 2-3a is opened at the top of the lower mold 1-3.

[0037] Both the upper mold 2-3 and the lower mold 1-3 are equipped with cooling circulation channels 6.

[0038] The surfaces of the slanted slots 1-3a and slanted guide slots 1a-4d are all provided with a self-lubricating layer 1-5.

[0039] The working principle of this utility model is as follows: First, molten, fluid plastic material is injected through injection channel 2-5. The extrusion pressure of the injection molding machine causes the molten material to fill the cavities of the upper mold 2-3 and lower mold 1-3. Then, the injection of molten material is stopped, and coolant is introduced into the upper mold 2-3 and lower mold 1-3 through cooling circulation channel 6, causing the plastic parts inside the cavities to cool and solidify rapidly. After the plastic parts have cooled and solidified, the first hydraulic cylinder 1-4e and the second hydraulic cylinder 4 are simultaneously activated. The second hydraulic cylinder 4 drives the push plate 3 to move upwards, simultaneously moving the four corner push rods 2-7 and ejector pins 5 upwards as well. During this upward movement, push rods 2-7 push the upper mold base 2 upwards, thereby moving the inclined rod 2-4g and alignment fastener 2-4a upwards together. The movement of the oblique hole 2-4f will push the moving block 2-4b outward, thereby causing the square block 2-4d and the transverse cylindrical rod 2-4e to be pulled out from the injection molded part. Simultaneously, the first hydraulic cylinder 1-4e will drive the pull block 1-4d outward. The outward movement of the pull block 1-4d will cause the insert 1-4b inserted into the oblique slot 1-3a to be obliquely pulled along the direction of the oblique slot 1-3a through the oblique guide groove 1a-4d, thereby causing the arc block injection core 1-4c to detach from the injection molded part. At this time, the ejector pin 5 will push out all the injection molded parts (pipeline fixing bracket 7) and the tail material at the injection channel 2-5 together, so that multiple plastic parts are ejected and taken out at one time, which greatly increases the production efficiency and accuracy of the product and reduces the processing cost of complex plastic parts. It is worth promoting and applying.

[0040] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A hydraulically driven inclined side-drawing mold, comprising a lower mold base (1) and an upper mold base (2), characterized in that: The lower mold base (1) is fixed with guide posts (1-1) at each of its four corners, the upper mold base (2) is fixed with guide sleeves (2-1) that cooperate with the guide posts (1-1) at each of its four corners, the upper mold base (2) is fixed with positioning limit blocks (2-2) on each of its four sides, and the lower mold base (1) is provided with positioning limit grooves (1-2) that are respectively inserted into each of the positioning limit blocks (2-2). A set of upper molds (2-3) is fixed on the upper mold base (2), and a set of lower molds (1-3) that are respectively paired with each of the upper molds (2-3) are fixed on the lower mold base (1); The upper mold base (2) is equipped with a side-pulling mechanism (2-4) for injection square holes and round holes, and the lower mold base (1) is equipped with a slanted pulling mechanism (1-4) for injection core of arc block; The injection molding square hole and round hole side-pulling mechanism (2-4) includes a movable block (2-4b) inserted into the lower mold (1-3). Each movable block (2-4b) is fixed with a side block (2-4c). A square block (2-4d) is fixed to the outer end face of the side block (2-4c). A transverse cylindrical rod (2-4e) is fixed to both the inner and outer ends of the movable block (2-4b). An oblique hole (2-4f) is opened on the movable block (2-4b). An oblique rod (2-4g) that mates with the oblique hole (2-4f) is fixed on the upper mold (2-3). The arc block injection core oblique pulling mechanism (1-4) includes a support (1-4a) fixed on the lower mold base (1), an oblique slot (1-3a) is opened on the lower mold (1-3), a plug (1-4b) is inserted into the oblique slot (1-3a), an arc block injection core (1-4c) is fixed at the top of the plug (1-4b), a pull block (1-4d) is inserted into the lower mold base (1), an oblique guide groove (1a-4d) is opened on the pull block (1-4d), a locking block (1a-4b) is fixed at the bottom of the plug (1-4b) and engages with the oblique guide groove (1a-4d), and a first hydraulic cylinder (1-4e) is fixed on the support (1-4a) to drive the pull block (1-4d) to move. The lower mold base (1) is provided with a push plate (3), and the four corners of the push plate (3) are fixed with push rods (2-7) to push the upper mold base (2) to move upward. The lower mold base (1) is fixed with a second hydraulic cylinder (4) to drive the push plate (3) to move up and down. The upper mold base (2) has an injection channel (2-5) communicating with the upper mold (2-3).

2. The hydraulically driven inclined side-drawing mold according to claim 1, characterized in that: A set of ejector pins (5) are fixed on the push plate (3) and inserted into the lower mold base (1) for ejecting the molded injection part.

3. The hydraulically driven inclined side-drawing mold according to claim 1, characterized in that: The upper mold (2-3) is fixed with an alignment block (2-4a), the alignment block (2-4a) is provided with an inclined pressure surface (2a-4a), and the moving block (2-4b) is provided with an inclined surface (2a-4b) that cooperates with the inclined pressure surface (2a-4a).

4. The hydraulically driven inclined side-drawing mold according to claim 3, characterized in that: The upper mold base (2) has vertical blocks (2-6) fixed on all four sides for limiting the outward movement of the pull block (1-4d), and the bottom end of the vertical block (2-6) has a channel (2-6a).

5. A hydraulically driven inclined side-drawing mold according to claim 1, characterized in that: A positioning block (2-3a) is fixed at the bottom side of the upper mold (2-3), and a positioning groove (1-3b) that mates with the positioning block (2-3a) is opened at the top of the lower mold (1-3).

6. A hydraulically driven inclined side-drawing mold according to claim 1, characterized in that: Both the upper mold (2-3) and the lower mold (1-3) are provided with cooling circulation channels (6).

7. A hydraulically driven inclined side-drawing mold according to claim 1, characterized in that: The surfaces of the inclined slot (1-3a) and the inclined guide slot (1a-4d) are both provided with a self-lubricating layer (1-5).

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