Sliding block inner loose core locking structure in plastic mold

Abstract

The utility model relates to the technical field of plastic molds, in particular to a sliding block inner core-pulling locking structure in a plastic mold. The problem that in the prior art, a formed product is difficult to take out from a mold is solved, and the practicability of equipment is improved. The mold structurally comprises an upper mold and a lower mold, mold grooves are formed in the upper mold and the lower mold, a plurality of first vent holes are formed in the bottoms of the mold grooves, a sliding piece is arranged at the bottom of the lower mold, and a plurality of second vent holes are formed in the sliding piece; a sliding structure used for enabling the second vent hole to be aligned with the first vent hole or enabling the second vent hole to be staggered relative to the first vent hole is arranged between the lower die and the sliding piece, a first control structure used for controlling the sliding structure is further arranged on the lower die, and connecting columns are arranged at the positions, close to the four corner ends, of the upper die. After injection molding of the product is finished, the sliding piece is moved to align the first vent hole with the second vent hole, so that the bottom air pressure and the top of the product are balanced, and the product taking-out difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic molds, and in particular to a core-pulling locking structure in a slide block of a plastic mold. Background Art

[0002] Plastic mold is a tool used to produce plastic products. Since the design and manufacture of plastic molds need to consider factors such as product structure, shape, dimensional accuracy, etc., plastic molds play a very important role in industrial production.

[0003] The preparation process of plastic molds is: inject molten raw materials into the mold, wait for cooling and solidification, separate the mold, and then take out the product in the mold.

[0004] Although this can produce molded products, there are still the following disadvantages: during the injection molding process, the colloid is heated and melted into liquid, the liquid settles in the lower mold and discharges the gas between it and the bottom of the lower mold, and then the liquid solidifies into colloid to complete the injection molding. Since the colloid and the lower mold are in a near vacuum state and are restricted by atmospheric pressure, the molded product is difficult to take out directly from the lower mold. Utility Model Content

[0005] The utility model provides a core-pulling locking structure in a slide block of a plastic mold, which solves the problem in the prior art that molded products are difficult to take out of the mold and improves the practicability of the equipment.

[0006] The technical solution of the utility model is as follows:

[0007] A core pulling and locking structure in a slide block of a plastic mold comprises an upper mold and a lower mold, wherein both the upper mold and the lower mold are provided with mold grooves.

[0008] The bottom of the mold groove is provided with a plurality of first air holes, the bottom of the lower mold is provided with a sliding member, and the sliding member is provided with a plurality of second air holes. A sliding structure is provided between the lower mold and the sliding member for aligning the second air holes with the first air holes or staggering the second air holes relative to the first air holes. The lower mold is also provided with a first control structure for controlling the sliding structure. The upper mold is provided with connecting columns near the four corner ends, and the lower mold is provided with four first sliding grooves. The first sliding grooves correspond to the connecting columns one by one, and a limiting structure is provided between each of the connecting columns and the first sliding grooves for limiting the position of the connecting column relative to the first sliding groove. The first sliding groove is also provided with a second control structure for controlling the limiting structure.

[0009] Furthermore, the sliding structure includes a second sliding groove arranged at the lower end of the lower mold, and sliders are provided at both ends of the sliding member. The sliders are slidingly connected to the second sliding groove, and the cross-section of the slider is a "convex" structure.

[0010] Furthermore, the first control structure includes a first adjusting bolt, a limit plate is provided at one end of the second sliding groove, the sliding member is provided with a first limit groove near the end of the limit plate, a first limit bolt is provided in the first limit groove, and a first sliding hole is provided at the side of the first limit groove near the limit plate, the first adjusting bolt is slidingly connected to the first sliding hole, and the first adjusting bolt is fixedly connected to the first limit bolt.

[0011] Furthermore, the limiting structure includes a third sliding groove arranged on the side wall of the first sliding groove, the cross-section of the third sliding groove is a rectangular structure, the third sliding groove is slidingly connected with a limiting block, the side wall of the connecting column close to the limiting block is provided with a slot cooperating with the limiting block, and a limiting spring is fixedly connected between the limiting block and the bottom of the third sliding groove.

[0012] Furthermore, the cross-section of the slot is a right-angled trapezoidal structure, the hypotenuse of the slot is located on the upper side of the right-angled plate of the slot, the cross-section of the limit block is a right-angled trapezoidal structure, and the distance between the hypotenuse of the limit block and the connecting column is shorter than the distance between the right-angled side of the limit block and the connecting column.

[0013] Furthermore, the second control structure includes a second adjusting bolt, a second limiting groove is provided on the limiting block, a second limiting bolt is provided in the second limiting groove, a second sliding hole is provided in the second limiting groove near the threaded hole end, the second adjusting bolt is slidingly connected to the second sliding hole, and the second limiting bolt is fixedly connected to the second adjusting bolt.

[0014] Furthermore, the threaded hole at the bottom of the third sliding groove, the second adjusting bolt is provided with an abutment area and a limit area, the distance between the limit area and the limit block is smaller than the distance between the abutment area and the limit block, and the limit area is provided with an external thread threadedly connected to the threaded hole.

[0015] The working principle and beneficial effects of the utility model are:

[0016] The working process of this embodiment is as follows: when the product needs to be taken out of the mold, the second adjusting bolt is moved away from the lower mold, driving the limit block to move away from the slot, and then the second adjusting bolt is rotated to lock the position of the limit block, and then the upper mold is separated from the lower mold, and then the first adjusting bolt is rotated to align the second vent hole on the sliding part with the first vent hole. At this time, the air pressure at the bottom of the product is balanced with the air pressure at the top, reducing the difficulty of taking out the product.

[0017] The utility model provides a plurality of first vent holes in the mold groove of the lower mold, and provides a sliding member at the bottom of the lower mold, and a second vent hole is provided on the sliding member. By adjusting the first control structure, the first vent holes are blocked and closed by the sliding member when the mold product is cooled during injection molding, thereby ensuring that the raw material will not be exposed; when the injection molding of the product is completed, the sliding member is moved to align the first vent holes with the second vent holes, so that the air pressure at the bottom of the product is balanced with that at the top, thereby reducing the difficulty of taking out the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] Figure 1 It is a structural schematic diagram of the prior art of this embodiment;

[0020] Figure 2 The overall structure of this embodiment is shown in FIG. Figure 1 ;

[0021] Figure 3 The overall structure of this embodiment is shown in FIG. Figure 2 ;

[0022] Figure 4 is a schematic structural diagram of the sliding structure in this embodiment;

[0023] Figure 5 It is a schematic structural diagram of the limiting structure and the second control structure in this embodiment.

[0024] In the figure:

[0025] 1. Upper mold; 11. Connecting column; 111. Slot; 2. Lower mold; 21. First sliding groove; 211. Third sliding groove; 22. Mold groove; 221. First ventilation hole; 23. Second sliding groove; 24. Threaded hole; 25. Limit plate; 3. Second adjusting bolt; 31. Limiting area; 311. External thread; 312. Limiting spring; 32. Abutting area; 33. Second limiting bolt; 4. First adjusting bolt; 41. First limiting bolt; 5. Sliding member; 51. Second ventilation hole; 52. First limiting groove; 521. First sliding hole; 53. Sliding block; 6. Limiting block; 61. Second limiting groove; 62. Second sliding hole. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 2 to Figure 5 As shown, a core-pulling locking structure in a slider 53 in a plastic mold includes an upper mold 1 and a lower mold 2, and mold grooves 22 are provided on the upper mold 1 and the lower mold 2. In this embodiment, a plurality of first vents 221 are arranged at the bottom of the mold groove 22, a sliding member 5 is arranged at the bottom of the lower mold 2, and a plurality of second vents 51 are arranged on the sliding member 5. The sliding structure is arranged between the lower mold 2 and the sliding member 5, and is used to align the second vents 51 with the first vents 221 or to stagger the second vents 51 relative to the first vents 221. The first control structure is arranged on the lower mold 2 to control the sliding structure. Four connecting columns 11 are arranged near the four corner ends of the upper mold 1, and four first sliding grooves 21 are arranged on the lower mold 2, and the first sliding grooves 21 correspond to the connecting columns 11 one by one. The limiting structure is arranged between each connecting column 11 and the first sliding groove 21, and is used to limit the position of the connecting column 11 relative to the first sliding groove 21. The second control structure is disposed in the first sliding groove 21 and is used to control the limiting structure.

[0028] The limiting structure in this embodiment includes a third sliding groove 211 arranged on the side wall of the first sliding groove 21, the cross section of the third sliding groove 211 is a rectangular structure, and the limiting block 6 is slidingly arranged in the third sliding groove 211. The clamping groove 111 is arranged on the side wall of the connecting column 11 close to the limiting block 6, and it cooperates with the limiting block 6. The limiting spring 312 is fixedly arranged between the limiting block 6 and the bottom of the third sliding groove 211, and is used to ensure that the limiting block 6 always abuts against the connecting column 11, and ensures that when the limiting block 6 can smoothly enter the clamping groove 111, the sealing between the upper mold 1 and the lower mold 2 is ensured, and the colloid will not leak.

[0029] The second control structure in this embodiment includes a second adjustment bolt 3, a second limiting groove 61 is provided on the limiting block 6, a second limiting bolt 33 is provided in the second limiting groove 61, a second sliding hole 62 is provided at the end of the second limiting groove 61 close to the threaded hole 24, the second adjustment bolt 3 is slidingly connected to the second sliding hole 62, and the second limiting bolt 33 is fixedly connected to the second adjustment bolt 3. Such a design ensures that the second adjustment bolt 3 can drive the limiting block 6 to move when it rotates, so as to achieve the purpose of controlling the limiting block 6 to abut against the connecting column 11 or to be separated from the connecting column 11. The adjustment through the thread not only makes the adjustment result more accurate, but also can achieve self-locking after the adjustment is completed.

[0030] The threaded hole 24, the abutment area 32 and the limit area 31 at the bottom of the third sliding groove 211 in this embodiment are arranged on the second adjusting bolt 3, and the distance between the limit area 31 and the limit block 6 is smaller than the distance between the abutment area 32 and the limit block 6. The external thread 311 is arranged on the limit area 31, which is threadedly connected with the threaded hole 24. When the abutment area 32 on the second adjusting bolt 3 is connected to the threaded hole 24, since there is no thread on the abutment area 32, the abutment area 32 is slidingly connected to the threaded hole 24, so that under the action of the limit spring 312, it is ensured that the limit block 6 is always in contact with the connecting column 11, and when the connecting column 11 penetrates into the first sliding groove 21, the limit block 6 is inserted into the clamping groove 111, and the connecting column 11 is clamped so that the upper mold 1 will not be separated from the lower mold 2; when the limit area 31 on the second adjusting bolt 3 is connected to the threaded hole 24, since there is an external thread 311 on the limit area 31, when the second adjusting bolt 3 does not rotate, the position of the limit block 6 does not change, and the limit block 6 is now separated from the clamping groove 111, and the upper mold 1 can be taken out relative to the lower mold 2.

[0031] The cross section of the slot 111 in this embodiment is a right-angled trapezoidal structure, the hypotenuse of the slot 111 is located on the upper side of the right-angled plate of the slot 111, the cross section of the stopper 6 is a right-angled trapezoidal structure, and the distance between the hypotenuse of the stopper 6 and the connecting column 11 is shorter than the distance between the right-angled side of the stopper 6 and the connecting column 11. Such a design ensures that when the upper mold 1 is separated from the lower mold 2, the right-angled plate of the stopper 6 and the edges between the slot 111 are in contact, and the upper mold 1 is not easy to be separated from the lower mold 2.

[0032] The sliding structure in this embodiment includes a second sliding groove 23, which is arranged at the lower end of the lower mold 2. Slide blocks 53 are arranged at both ends of the sliding member 5, and the slide blocks 53 are slidingly connected with the second sliding groove 23. The cross section of the slide block 53 is a "convex" structure. Such a design ensures that the sliding member 5 will not be deviated when sliding at the bottom of the mold groove 22, and the structure is more stable.

[0033] The first control structure in this embodiment includes a first adjusting bolt 4, a limiting plate 25 is arranged at one end of the second sliding groove 23, a first limiting groove 52 is arranged at the end of the sliding member 5 close to the limiting plate 25, a first limiting bolt 41 is arranged in the first limiting groove 52, a first sliding hole 521 is arranged on the side of the first limiting groove 52 close to the limiting plate 25, the first adjusting bolt 4 is slidingly connected with the first sliding hole 521, and the first adjusting bolt 4 is fixedly connected with the first limiting bolt 41. By rotating the first adjusting bolt 4, the sliding member 5 can slide relative to the lower mold 2, so as to achieve the purpose of staggering or aligning the first vent hole 221 and the second vent hole 51. Such a design can control the movement of the sliding member 5 with more effort, and the adjustment structure can achieve self-locking, ensuring that the colloid will not leak during the injection process.

[0034] The working process of this embodiment is as follows: when the product needs to be taken out of the mold, the second adjusting bolt 3 is moved away from the lower mold 2, driving the limit block 6 to move away from the slot 111, and then the second adjusting bolt 3 is rotated to lock the position of the limit block 6, and then the upper mold 1 is separated from the lower mold 2, and then the first adjusting bolt 4 is rotated to align the second vent hole 51 on the sliding member 5 with the first vent hole 221. At this time, the air pressure at the bottom of the product is balanced with the air pressure at the top, reducing the difficulty of taking out the product.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A core-pulling locking structure in a slide block of a plastic mold, comprising an upper mold (1) and a lower mold (2), wherein both the upper mold (1) and the lower mold (2) are provided with a mold groove (22), characterized in that: The bottom of the mold groove (22) is provided with a plurality of first vent holes (221); the bottom of the lower mold (2) is provided with a sliding member (5); the sliding member (5) is provided with a plurality of second vent holes (51); a sliding structure for aligning the second vent holes (51) with the first vent holes (221) or staggering the second vent holes (51) relative to the first vent holes (221) is provided between the lower mold (2) and the sliding member (5); and a sliding structure for controlling the sliding structure is provided on the lower mold (2). The upper mold (1) is provided with a connecting column (11) near the four corner ends, and the lower mold (2) is provided with four first sliding grooves (21), the first sliding grooves (21) and the connecting columns (11) correspond to each other one by one, and a limiting structure for limiting the position of the connecting column (11) relative to the first sliding groove (21) is provided between each of the connecting columns (11) and the first sliding groove (21), and a second control structure for controlling the limiting structure is also provided in the first sliding groove (21).

2. A core-pulling locking structure for a slide block in a plastic mold according to claim 1, characterized in that: The sliding structure comprises a second sliding groove (23) arranged at the lower end of the lower mold (2), and sliders (53) are provided at both ends of the sliding member (5). The sliders (53) are slidingly connected to the second sliding groove (23), and the cross section of the slider (53) is a "convex" structure.

3. The core-pulling locking structure of the inner slide of a plastic mold according to claim 2, characterized in that: The first control structure comprises a first adjusting bolt (4), a limiting plate (25) is provided at one end of the second sliding groove (23), a first limiting groove (52) is provided at the end of the sliding member (5) close to the limiting plate (25), a first limiting bolt (41) is provided in the first limiting groove (52), a first sliding hole (521) is provided at the side of the first limiting groove (52) close to the limiting plate (25), the first adjusting bolt (4) is slidingly connected to the first sliding hole (521), and the first adjusting bolt (4) is fixedly connected to the first limiting bolt (41).

4. The core-pulling locking structure of the inner slide of a plastic mold according to claim 1, characterized in that: The limiting structure comprises a third sliding groove (211) arranged on the side wall of the first sliding groove (21); the cross section of the third sliding groove (211) is a rectangular structure; a limiting block (6) is slidingly connected in the third sliding groove (211); a clamping groove (111) cooperating with the limiting block (6) is provided on the side wall of the connecting column (11) close to the limiting block (6); and a limiting spring (312) is fixedly connected between the limiting block (6) and the bottom of the third sliding groove (211).

5. The core-pulling locking structure of the inner slide of a plastic mold according to claim 4, characterized in that: The cross section of the card slot (111) is a right-angled trapezoidal structure, the hypotenuse of the card slot (111) is located on the upper side of the right-angled plate of the card slot (111), the cross section of the limit block (6) is a right-angled trapezoidal structure, and the distance between the hypotenuse of the limit block (6) and the connecting column (11) is shorter than the distance between the right-angled side of the limit block (6) and the connecting column (11).

6. The core-pulling locking structure of the slide block in a plastic mold according to claim 4, characterized in that: The second control structure comprises a second adjusting bolt (3), a second limiting groove (61) is provided on the limiting block (6), a second limiting bolt (33) is provided in the second limiting groove (61), a second sliding hole (62) is provided at the end of the second limiting groove (61) close to the threaded hole (24), the second adjusting bolt (3) is slidingly connected to the second sliding hole (62), and the second limiting bolt (33) is fixedly connected to the second adjusting bolt (3).

7. A core-pulling locking structure for a slide block in a plastic mold according to claim 6, characterized in that: The threaded hole (24) at the bottom of the third sliding groove (211), the second adjusting bolt (3) is provided with an abutment area (32) and a limiting area (31), the distance between the limiting area (31) and the limiting block (6) is smaller than the distance between the abutment area (32) and the limiting block (6), and the limiting area (31) is provided with an external thread (311) threadedly connected to the threaded hole (24).

Images