A mold frame fixing structure that facilitates mold frame replacement

Abstract

This utility model discloses a mold frame fixing structure that facilitates mold frame replacement, including a front mold frame, a first square iron, a front mold frame base plate, a rear mold frame, a second square iron, and a rear mold frame base plate. The first square iron is connected between the front mold frame and the front mold frame base plate, and the second square iron is connected between the rear mold frame and the rear mold frame base plate. Both the first and second square irons are rotatably connected to a bidirectional screw rod, and both ends of the bidirectional screw rod are provided with hexagonal holes. A first adjusting block and a second adjusting block are respectively driven and connected to the bidirectional screw rod. Both sides of the first and second adjusting blocks, which are opposite to each other, are provided with oblique insertion holes, and both sides of the oblique insertion holes are inclined surfaces. In this utility model, by rotating the bidirectional screw rod, the first and second adjusting blocks are moved relative to each other, completing the locking and unlocking actions between the two adjusting blocks and the corresponding T-shaped shafts, replacing the traditional method of tightening bolts one by one, greatly shortening the mold frame replacement time and improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mold frame fixing technology, and in particular to a mold frame fixing structure that facilitates mold frame replacement. Background Technology

[0002] A mold frame is a complete mold support structure for producing specific plastic products. It is a semi-finished product of the mold and consists of components such as an ejection mechanism, a guiding mechanism, and mold foot pads. As a mold skeleton, it is widely used in the automotive, electronics, medical equipment, and powder metallurgy industries, and can be standardized or customized to meet different precision requirements.

[0003] A mold frame typically consists of a front mold frame base plate, a front mold frame, a rear mold frame, square iron, a rear mold frame base plate, positioning components, and lifting components. Traditionally, the front and rear mold frames are fixed by bolts directly locking them to the front and rear mold frame base plates. When replacing the mold frame, operators need to use tools to loosen and tighten a large number of bolts one by one, which is cumbersome, time-consuming, and labor-intensive, seriously affecting production efficiency. At the same time, the bolts are prone to stripping or damage during repeated tightening. The installation accuracy relies on manual control, resulting in poor consistency and easily leading to flash or unstable product quality. Therefore, a mold frame fixing structure that facilitates mold frame replacement is needed to meet this requirement. Utility Model Content

[0004] The purpose of this utility model is to provide a mold frame fixing structure that facilitates mold frame replacement, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mold frame fixing structure that facilitates mold frame replacement, comprising a front mold frame, a first square iron, a front mold frame base plate, a rear mold frame, a second square iron, and a rear mold frame base plate. The first square iron connects the front mold frame and the front mold frame base plate, and the second square iron connects the rear mold frame and the rear mold frame base plate. Both the first and second square irons are rotatably connected to a bidirectional screw, and both ends of the bidirectional screw have hexagonal holes. The bidirectional screws are respectively connected to a transmission mechanism. The first adjusting block and the second adjusting block each have oblique insertion openings on their opposite sides. Both sides of the oblique insertion openings are inclined surfaces, and straight slots are formed on both inclined surfaces. The upper and lower ends of the first square iron and the second square iron each have insertion holes, into which T-shaped shafts are inserted. The web shaft section of the T-shaped shaft is fitted into the straight slot, and the wing shaft section is arranged on the inclined surface of the oblique insertion opening. The end of the T-shaped shaft opposite to the wing shaft can be connected separately to the front mold frame, the front mold frame base plate, the rear mold frame, and the rear mold frame base plate.

[0006] Preferably, the first adjusting block has a positive thread hole adapted to the positive thread section of the bidirectional screw, and the second adjusting block has a negative thread hole adapted to the negative thread section of the bidirectional screw.

[0007] Preferably, both the first square iron and the second square iron are provided with guide grooves, and the first adjusting block and the second adjusting block are slidably adapted to the same guide groove.

[0008] Preferably, both the first square iron and the second square iron are provided with oil injection holes, which are connected to the guide groove.

[0009] Preferably, the diameter of the insertion hole is adapted to the outer diameter of the wing shaft of the T-shaped shaft, and the width of the straight groove is adapted to the outer diameter of the web shaft of the T-shaped shaft.

[0010] Preferably, there are two first square irons and two second square irons, four bidirectional screws, four first adjusting blocks and four second adjusting blocks, and sixteen T-shaped shafts.

[0011] Preferably, each of the T-shaped shafts is individually connected to the front mold frame, the front mold frame base plate, the rear mold frame, and the rear mold frame base plate by threaded screwing.

[0012] The beneficial effects of this utility model are: In this invention, the first and second adjusting blocks are moved relative to each other by rotating a bidirectional screw, thereby completing the locking and unlocking actions between the two adjusting blocks and the corresponding T-shaped shafts. This replaces the traditional method of tightening bolts one by one, greatly shortening the mold frame replacement time and improving production efficiency.

[0013] In this invention, multiple T-shaped shafts are linked through the same mechanism to ensure the consistency and uniformity of the locking force, effectively avoiding problems such as misalignment of the mold frame installation or imprecise fit caused by human operation errors. This improves the stability of product quality and reduces defects such as flash. All operations can be completed by simply turning both ends of the bidirectional screw with a hex wrench, saving time and effort and reducing the technical requirements and labor intensity for operators. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a mold frame fixing structure that facilitates mold frame replacement, as proposed in this utility model. Figure 2 An exploded view of the connection between the front mold frame, the first square iron and the bottom plate of the front mold frame, which is a mold frame fixing structure that facilitates mold frame replacement according to this utility model. Figure 3 An exploded view of the connection between the rear mold frame, the second square iron, and the rear mold frame base plate, which is a mold frame fixing structure that facilitates mold frame replacement according to this utility model. Figure 4 This is a schematic diagram of the first square iron structure of a mold frame fixing structure that facilitates mold frame replacement, as proposed in this utility model. Figure 5This is a side cross-sectional view of the first square iron of the mold frame fixing structure that facilitates mold frame replacement according to the present invention. Figure 6 This is a schematic diagram of the second adjusting block and T-shaped shaft cooperating structure of a mold frame fixing structure that facilitates mold frame replacement, as proposed in this utility model.

[0015] In the diagram: 1. Front mold base; 2. First square iron; 3. Front mold base bottom plate; 4. Rear mold base; 5. Second square iron; 6. Rear mold base bottom plate; 7. Bidirectional screw; 8. First adjusting block; 9. Second adjusting block; 10. Angled insertion port; 11. Straight slot; 12. Insertion hole; 13. T-shaped shaft; 14. Guide groove; 15. Oil injection hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Reference Figure 1-6 A mold frame fixing structure for easy mold frame replacement includes a front mold frame 1, a first square iron 2, a front mold frame base plate 3, a rear mold frame 4, a second square iron 5, and a rear mold frame base plate 6. The first square iron 2 connects the front mold frame 1 and the front mold frame base plate 3, and the second square iron 5 connects the rear mold frame 4 and the rear mold frame base plate 6. Both the first square iron 2 and the second square iron 5 are rotatably connected to a double-ended screw 7. Hexagonal holes are provided at both ends of the double-ended screw 7. A first adjusting block 8 and a second adjusting block 9 are respectively driven and connected to the double-ended screw 7. Both sides of block 8 and the second adjusting block 9 are provided with inclined insertion ports 10. Both sides of the inclined insertion port 10 are inclined surfaces, and both inclined surfaces are provided with straight slots 11. Both the upper and lower ends of the first square iron 2 and the second square iron 5 are provided with insertion holes 12. A T-shaped shaft 13 is inserted into the insertion hole 12. The web shaft section of the T-shaped shaft 13 is fitted into the straight slot 11, and the wing shaft section is arranged on the inclined surface of the inclined insertion port 10. The end of the T-shaped shaft 13 away from the wing shaft can be connected separately to the front mold frame 1, the front mold frame base plate 3, the rear mold frame 4, and the rear mold frame base plate 6.

[0018] Specifically, in this embodiment, the first adjusting block 8 is provided with a positive thread hole that matches the positive thread section of the bidirectional screw 7, and the second adjusting block 9 is provided with a negative thread hole that matches the negative thread section of the bidirectional screw 7, so that when the bidirectional screw 7 rotates, the first adjusting block 8 and the second adjusting block 9 can move towards or away from each other.

[0019] Specifically, in this embodiment, guide grooves 14 are provided in both the first square iron 2 and the second square iron 5, and the first adjusting block 8 and the second adjusting block 9 are slidably adapted to the same guide groove 14, ensuring the stability and straightness of the first adjusting block 8 and the second adjusting block 9 when they move.

[0020] Specifically, in this embodiment, both the first square iron 2 and the second square iron 5 are provided with oil injection holes 15, which are connected to the guide groove 14. This facilitates the regular addition of lubricating oil, reduces friction between the adjusting block and the guide groove 14, ensures smooth operation and extends service life, and ensures the smoothness of transmission between the bidirectional screw 7 and the adjusting block.

[0021] Specifically, in this embodiment, the diameter of the insertion hole 12 is adapted to the outer diameter of the wing shaft of the T-shaped shaft 13, and the groove width of the straight slot 11 is adapted to the outer diameter of the web shaft of the T-shaped shaft 13, ensuring that the T-shaped shaft 13 can be accurately inserted and effectively transmit the locking force.

[0022] Specifically, in this embodiment, there are two first square irons 2 and two second square irons 5, four bidirectional screws 7, four first adjusting blocks 8 and four second adjusting blocks 9, and sixteen T-shaped shafts 13, which provide symmetrical and balanced locking force.

[0023] Specifically, in this embodiment, each T-shaped shaft 13 is individually connected to the front mold frame 1, the front mold frame base plate 3, the rear mold frame 4, and the rear mold frame base plate 6 by threading. The independent adjustability and high reliability of each connection point facilitate processing and subsequent maintenance and replacement.

[0024] During assembly, screw the external threaded part of the lower end of the T-shaped shaft 13 into the pre-set threaded hole on the front mold frame 1, the front mold frame base plate 3, the rear mold frame 4, or the rear mold frame base plate 6, and initially tighten it. Place the first square iron 2 on the front mold frame 1, the front mold frame base plate 3 on the first square iron 2, the second square iron 5 on the rear mold frame base plate 6, and the rear mold frame 4 on the second square iron 5. Align the insertion hole 12 with the position of the T-shaped shaft 13, so that the T-shaped shaft 13 on the front mold frame 1 and the front mold frame base plate 3 is inserted into the first square iron 2, and the T-shaped shaft 13 on the rear mold frame 4 and the rear mold frame base plate 6 is inserted into the second square iron 5. When it is necessary to lock the mold frame, use a hex wrench to insert into the hexagonal hole at the end of the double-ended screw 7 and rotate it. The rotation of the double-ended screw 7 drives the first adjusting block 8 and the second adjusting block 9 to move towards each other along the guide groove 14. When the adjusting blocks move, the straight groove 11 moves with the adjusting blocks and covers them. Wrapped around both sides of the T-shaped shaft 13, the inclined surfaces of the slanted insertion ports 10 push the wing shaft section of the T-shaped shaft 13. Since the web shaft of the T-shaped shaft 13 is restricted to moving up and down in the straight slot 11, the inclined surfaces press the T-shaped shaft 13 downward, thereby forcefully tightening the front mold frame 1, the front mold frame base plate 3 and the first square iron 2 or the rear mold frame 4, the rear mold frame base plate 6 and the second square iron 5, thus achieving a firm fixation of the entire mold frame. When it is necessary to replace or disassemble the mold frame, the bidirectional screw 7 is rotated in the opposite direction, driving the first adjusting block 8 and the second adjusting block 9 to move in opposite directions. The inclined surfaces of the slanted insertion ports 10 then release the pressure on the T-shaped shaft 13 until the web shaft part of the T-shaped shaft 13 is completely dislodged from the straight slot 11. The locking force between the front mold frame 1, the front mold frame base plate 3 and the first square iron 2, and between the rear mold frame 4, the rear mold frame base plate 6 and the second square iron 5 is released, and the mold frame can be easily separated for replacement.

[0025] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A mold frame fixing structure for easy mold frame replacement, comprising a front mold frame (1), a first square iron (2), a front mold frame base plate (3), a rear mold frame (4), a second square iron (5), and a rear mold frame base plate (6), characterized in that: The first square iron (2) is connected between the front mold frame (1) and the front mold frame base plate (3), and the second square iron (5) is connected between the rear mold frame (4) and the rear mold frame base plate (6). Both the first square iron (2) and the second square iron (5) are rotatably connected with a double-ended screw (7). Both ends of the double-ended screw (7) are provided with hexagonal holes. The double-ended screw (7) is respectively connected to a first adjusting block (8) and a second adjusting block (9). The first adjusting block (8) and the second adjusting block (9) are provided with oblique insertion slots (10) on their opposite sides. Both sides of the inclined insertion port (10) are inclined surfaces, and straight slots (11) are provided on both inclined surfaces. The first square iron (2) and the second square iron (5) are provided with insertion holes (12) at both ends. A T-shaped shaft (13) is inserted into the insertion hole (12). The web shaft section of the T-shaped shaft (13) is fitted into the straight slot (11), and the wing shaft section is arranged on the inclined surface of the inclined insertion port (10). The end of the T-shaped shaft (13) away from the wing shaft can be connected separately to the front mold frame (1), the front mold frame base plate (3), the rear mold frame (4) and the rear mold frame base plate (6).

2. The mold frame fixing structure for easy mold frame replacement according to claim 1, characterized in that: The first adjusting block (8) has a positive thread hole that matches the positive thread section of the bidirectional screw (7), and the second adjusting block (9) has a reverse thread hole that matches the reverse thread section of the bidirectional screw (7).

3. The mold frame fixing structure for easy mold frame replacement according to claim 1, characterized in that: The first square iron (2) and the second square iron (5) are both provided with guide grooves (14), and the first adjusting block (8) and the second adjusting block (9) are both slidably adapted to the same guide groove (14).

4. The mold frame fixing structure for easy mold frame replacement according to claim 1, characterized in that: The first square iron (2) and the second square iron (5) are both provided with oil injection holes (15), which are connected to the guide groove (14).

5. The mold frame fixing structure for easy mold frame replacement according to claim 1, characterized in that: The diameter of the insertion hole (12) is adapted to the outer diameter of the wing shaft of the T-shaped shaft (13), and the groove width of the straight slot (11) is adapted to the outer diameter of the web shaft of the T-shaped shaft (13).

6. The mold frame fixing structure for easy mold frame replacement according to claim 1, characterized in that: There are two of the first square iron (2) and the second square iron (5), four of the bidirectional screws (7), four of the first adjusting blocks (8) and the second adjusting blocks (9), and sixteen of the T-shaped shafts (13).

7. The mold frame fixing structure for easy mold frame replacement according to claim 1, characterized in that: Each of the T-shaped shafts (13) is individually connected to the front mold frame (1), the front mold frame base plate (3), the rear mold frame (4), and the rear mold frame base plate (6) by threaded screwing.

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