Die changing structure of tungsten filament spool forming machine

Abstract

A die changing structure of a tungsten filament spool forming machine relates to the technical field of spool forming machines and comprises a base and a top plate arranged above the base, a lower mounting seat is fixedly mounted on the upper end face of the base, a detachable lower die is mounted in an inner cavity of the lower mounting seat, an upper mounting seat is arranged below the top plate, and a lower die is mounted in an inner cavity of the upper mounting seat. A detachable upper mold is mounted in an inner cavity of the upper mounting base, sliding limiting inserting blocks are arranged on the two sides of the inner cavity of the lower mounting base and the two sides of the inner cavity of the upper mounting base correspondingly, the inserting blocks synchronously move through transmission structures in the lower mounting base and the upper mounting base, inserting grooves are formed in the two sides of the lower mold and the two sides of the upper mold correspondingly, and the inserting grooves are matched with the inserting blocks in an inserted mode; according to the scheme, the problem that deviation is likely to be generated between an upper mold and a lower mold after replacement due to the poor positioning and locking effect of a mold installation structure is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of I-beam forming machines, specifically a mold changing structure for a tungsten wire I-beam forming machine. Background Technology

[0002] The plastic tungsten wire I-beam molding machine is a device that uses injection molding to produce plastic tungsten wire I-beams. During operation, plastic granules are first added to the hopper of the molding machine. The granular plastic raw material is heated to a molten state in the barrel. Through the rotation of the screw, the completely molten plastic is injected under high pressure into the mold cavity that matches the shape of the I-beam. After cooling and solidification, the plastic I-beam is obtained. Then the mold is opened, and the ejector device pushes the molded I-beam out of the mold.

[0003] For example, the Chinese authorized patent CN220482452U, entitled "An Injection Mold for an I-beam Wheel," includes a top plate, a fixed mold, a fixed mold core, an injection molding assembly, a moving mold assembly, and a fixed base. The top plate covers the upper side of the fixed mold, the fixed mold core is located inside the fixed mold, the injection molding assembly is located inside the fixed mold core, the moving mold assembly is located at the lower end of the fixed mold, and the fixed base is fixed on both sides of the bottom of the moving mold assembly. The injection molding assembly includes an injection port, a hot runner, and a cold runner. The injection port is fixed on the top plate and serves as the injection inlet. The hot runner is located inside the fixed mold core and communicates with the injection port. The hot runner is heated by electric heating. The cold runner is connected to the hot runner. The whole assembly has a disc-shaped structure with a discharge port around the edge, which is inserted into the cavity of the fixed mold core.

[0004] While the existing technology can achieve mold replacement, the mold installation structure has poor positioning and locking effect, which easily leads to deviations between the upper and lower molds after replacement, thus affecting the subsequent injection molding quality. Therefore, it does not meet the current requirements. To address this, we propose a mold replacement structure for a tungsten wire I-beam forming machine. Utility Model Content

[0005] The purpose of this utility model is to provide a mold changing structure for a tungsten wire I-beam forming machine, so as to solve the problem that the mold installation structure mentioned in the background art has poor positioning and locking effect, which leads to easy deviation between the upper and lower molds after replacement.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mold changing structure for a tungsten wire I-beam forming machine, comprising a base and a top plate disposed above the base. A lower mounting seat is fixedly installed on the upper end face of the base, and a detachable lower mold is installed in the inner cavity of the lower mounting seat. An upper mounting seat is disposed below the top plate, and a detachable upper mold is installed in the inner cavity of the upper mounting seat. Sliding limiting blocks are provided on both sides of the inner cavities of the lower and upper mounting seats. The blocks are synchronously displaced through the transmission structure inside the lower and upper mounting seats. Slots are provided on both sides of the lower and upper molds, and the slots are engaged with the blocks.

[0007] Preferably, the transmission structure includes two double-threaded transmission rods, which are respectively mounted on both sides inside the lower mounting base and the upper mounting base via bearings. Displacement plates are installed at the front and rear of the two double-threaded transmission rods. The screw holes on both sides of the displacement plates are threadedly engaged with the double-threaded transmission rods, and one side of the displacement plate is fixed to the insert block.

[0008] Preferably, a transmission rod is rotatably mounted at the rear end inside the lower mounting base and the upper mounting base. The rear end of the double-threaded transmission rod extends into the cavity where the transmission rod is located, and the rear end of the double-threaded transmission rod is connected to the transmission rod through a helical gear transmission. A hexagonal adjusting column connected to the transmission rod is rotatably mounted at the rear end of the side wall of the lower mounting base and the upper mounting base.

[0009] Preferably, both the lower mold and the upper mold have a fixed boss on their contact surfaces. The upper boss of the lower mold has a positioning groove on both sides. Detection plates are symmetrically installed on both sides inside the positioning groove. The bottom boss of the upper mold has a positioning block on both sides, and the positioning block slides in cooperation with the positioning groove.

[0010] Preferably, a pressure sensor is installed between the detection plate and the positioning groove, and indicator lights are provided on both sides of the front end face of the base.

[0011] Preferably, guide sliders are fixedly provided on both sides of the upper mounting base, and a guide rod slides through the inside of the guide slider, with the upper and lower ends of the guide rod fixed to the base and the top plate.

[0012] Preferably, a hydraulic lifting device is fixedly installed at the upper end of the top plate, and the movable end of the hydraulic lifting device is fixed to the upper mounting base.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a mold center clamping mechanism. After the mold enters the mounting base, the operator uses a tool to rotate the hexagonal adjusting column, which drives the transmission rod at one end to rotate. Under the transmission of the helical gear, the front and rear double-threaded transmission rods rotate synchronously. Through the frictional engagement between the external threads and the screw holes on both sides of the displacement plate, the rotational motion is converted into linear motion. This causes the insertion block on one side to move through the displacement plate until it enters the slot on the side of the mold, thus fixing the mold inside the mounting base. The double-threaded design allows the displacement plate to accurately drive the insertion block closer to the mold during rotation, ensuring that the mold is evenly stressed on both sides and accurately fixed in the center position of the mounting base.

[0015] 2. This utility model, through its convenient positioning structure, allows for the installation of the upper mold after the lower mold is installed on the lower mounting base. Unlike traditional installation methods, the positioning block on the bottom boss of the upper mold is first aligned with the positioning groove on the boss of the lower mold. After alignment, the upper and lower molds are pushed together. Subsequently, the hydraulic lifting device moves the upper mounting base downwards until its mounting cavity completely encloses the upper mold. At this point, the corresponding hexagonal adjusting column is rotated to fix the lower mold. This rapid alignment design of the positioning block and positioning groove significantly shortens the initial preparation time for mold installation. The subsequent smooth transition between the hydraulic lifting device moving the upper mounting base downwards and the rotation of the hexagonal adjusting column to fix the lower mold, along with the precise fit between the positioning block and positioning groove, ensures that the upper and lower molds are in highly accurate positions upon initial docking.

[0016] 3. This utility model installs detection plates on both sides of the positioning groove cavity, and pressure sensors are installed between the detection plates and the positioning groove wall. Since the upper mold is installed with the upper mounting base under the premise of positioning with the lower mold, if the upper mold and the lower mold are not completely aligned during the rotation of the hexagonal adjusting column of the upper mounting base, it will inevitably cause pressure on one side of the detection plate. When the pressure value exceeds the set value, the indicator light on the corresponding side will be turned on to inform the operator that the upper and lower molds are not aligned. The deviation can be corrected in time during the mold installation process to prevent uneven distribution of plastic in the cavity due to mold misalignment, thereby avoiding problems such as inconsistent wall thickness and irregular shape of the product. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 Another perspective view of the mold assembly of this utility model;

[0019] Figure 3 This is a perspective view of the internal structure of the mounting base of this utility model;

[0020] Figure 4 This is a schematic diagram of the mold positioning structure of this utility model.

[0021] In the diagram: 1. Base; 2. Lower mounting base; 3. Upper mounting base; 4. Lower mold; 5. Upper mold; 6. Top plate; 7. Hydraulic lifting device; 8. Guide rod; 9. Guide slider; 10. Boss; 11. Positioning groove; 12. Positioning block; 13. Slot; 14. Double threaded transmission rod; 15. Displacement plate; 16. Insert block; 17. Hexagonal adjusting column; 18. Transmission rod; 19. Helical gear; 20. Detection plate; 21. Pressure sensor. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-4 An embodiment of this utility model provides a mold changing structure for a tungsten wire I-beam forming machine, including a base 1 and a top plate 6 disposed above the base 1. A lower mounting seat 2 is fixedly installed on the upper end face of the base 1. A detachable lower mold 4 is installed in the inner cavity of the lower mounting seat 2. An upper mounting seat 3 is disposed below the top plate 6. A detachable upper mold 5 is installed in the inner cavity of the upper mounting seat 3. Sliding limiting inserts 16 are provided on both sides of the inner cavities of the lower mounting seat 2 and the upper mounting seat 3. The inserts 16 are synchronously displaced through the transmission structure inside the lower mounting seat 2 and the upper mounting seat 3. Slots 13 are provided on both sides of the lower mold 4 and the upper mold 5, and the slots 13 are engaged with the inserts 16.

[0024] When the mold needs to be fixed, the transmission mechanism activates, causing the insert block 16 to shift and insert into the slots 13 on both sides of the mold. The tight fit between the insert block 16 and the slots 13 secures the mold within the mounting base. When the mold needs to be replaced, the transmission mechanism reverses its operation, causing the insert block 16 to exit the slots 13, facilitating mold removal. This makes mold installation and removal convenient and efficient, reducing mold changeover time and improving production efficiency. Furthermore, the insert-slot connection ensures a firm fixation, effectively guaranteeing the stability of the mold during injection molding, thereby improving product quality.

[0025] Please see Figure 3The transmission structure includes two double-threaded transmission rods 14, which are respectively mounted on both sides of the lower mounting base 2 and the upper mounting base 3 through bearings. Displacement plates 15 are installed at the front and rear of the two double-threaded transmission rods 14. The screw holes on both sides of the displacement plates 15 are threadedly engaged with the double-threaded transmission rods 14, and one side of the displacement plates 15 is fixed to the insert block 16. The rear end of the lower mounting base 2 and the upper mounting base 3 is rotatably mounted with a transmission rod 18. The rear end of the double-threaded transmission rods 14 extends into the cavity where the transmission rod 18 is located, and the rear end of the double-threaded transmission rods 14 and the transmission rod 18 are connected by a helical gear 19. The rear end of the side wall of the lower mounting base 2 and the upper mounting base 3 is rotatably mounted with a hexagonal adjusting column 17 connected to the transmission rod 18.

[0026] The operator uses a tool to rotate the hexagonal adjusting column 17, which drives the transmission rod 18 to rotate. The transmission rod 18, through the transmission action of the helical gear 19, synchronously drives the front and rear double-threaded transmission rods 14 to rotate. Since the screw holes on both sides of the displacement plate 15 are threadedly engaged with the double-threaded transmission rods 14, the rotational motion of the double-threaded transmission rods 14 is converted into the linear motion of the displacement plate 15. The displacement plate 15 then drives the fixed insert block 16 to move until it enters the slot 13 on the side of the mold, thus fixing the mold inside the mounting base.

[0027] Please see Figure 2 and Figure 4 The contact surfaces of the lower mold 4 and the upper mold 5 are both fixedly provided with bosses 10. The upper boss 10 of the lower mold 4 is provided with positioning grooves 11 on both sides. Detection plates 20 are symmetrically installed on both sides inside the positioning grooves 11. The bottom boss 10 of the upper mold 5 is provided with positioning blocks 12 on both sides, and the positioning blocks 12 are slidably engaged with the positioning grooves 11. A pressure sensor 21 is installed between the detection plate 20 and the positioning grooves 11. Indicator lights are provided on both sides of the front end face of the base 1.

[0028] When installing the upper mold 5 and the lower mold 4, first align the positioning block 12 of the bottom boss 10 of the upper mold 5 with the positioning groove 11 on the boss 10 of the lower mold 4 and push them together. During the process of fixing the mold by rotating the hexagonal adjusting column 17 of the upper mounting base 3, if the upper mold 5 and the lower mold 4 are not completely aligned, the positioning block 12 of the upper mold 5 will press against the detection plate 20 on one side of the positioning groove 11. The detection plate 20 will transmit the pressure to the pressure sensor 21. When the pressure value exceeds the set value, the corresponding indicator light on one side of the front face of the base 1 will be activated. This improves the accuracy of mold installation; through the cooperation of the detection plate and the pressure sensor, deviations during mold installation can be detected in a timely manner.

[0029] Please see Figure 1Guide sliders 9 are fixedly provided on both sides of the upper mounting base 3. Guide rods 8 slide through the inside of the guide sliders 9, and the upper and lower ends of the guide rods 8 are fixed to the base 1 and the top plate 6. A hydraulic lifting device 7 is fixedly installed on the upper end of the top plate 6, and the movable end of the hydraulic lifting device 7 is fixed to the upper mounting base 3. After the hydraulic lifting device 7 is started, its movable end drives the upper mounting base 3 to move up and down. The guide sliders 9 on both sides of the upper mounting base 3 slide along the guide rods 8, providing guidance for the movement of the upper mounting base 3.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A die changing structure of a tungsten wire spool forming machine, comprising a base (1) and a top plate (6) arranged above the base (1), characterized in that: The upper end face of the base (1) is fixedly provided with a lower mounting seat (2), a detachable lower mold (4) is mounted in the inner cavity of the lower mounting seat (2), an upper mounting seat (3) is arranged below the top plate (6), a detachable upper mold (5) is mounted in the inner cavity of the upper mounting seat (3), sliding limiting insert blocks (16) are arranged on both sides of the inner cavities of the lower mounting seat (2) and the upper mounting seat (3), the insert blocks (16) are synchronously displaced through the transmission structure inside the lower mounting seat (2) and the upper mounting seat (3), insert slots (13) are arranged on both sides of the lower mold (4) and the upper mold (5), and the insert slots (13) are insertedly connected with the insert blocks (16).

2. The die changing structure of a tungsten wire spooler forming machine according to claim 1, wherein: The transmission structure comprises two double-thread transmission rods (14) which are respectively mounted on both sides inside the lower mounting seat (2) and the upper mounting seat (3) through bearings, and displacement plates (15) are mounted in front of and behind the two double-thread transmission rods (14), the screw holes on both sides of the displacement plates (15) are threadedly connected with the double-thread transmission rods (14), and one side of the displacement plates (15) is fixedly connected with the insert blocks (16).

3. The die changing structure of a tungsten wire spool forming machine according to claim 2, wherein: The rear ends of the double-thread transmission rods (14) extend into the cavity where the transmission rod (18) is arranged, and the rear ends of the double-thread transmission rods (14) are in transmission connection with the transmission rod (18) through the bevel gears (19), and the rear ends of the side walls of the lower mounting seat (2) and the upper mounting seat (3) are rotatably provided with hexagonal adjusting columns (17) connected with the transmission rod (18).

4. The die changing structure of a tungsten wire spool forming machine according to claim 1, wherein: The contact surfaces of the lower mold (4) and the upper mold (5) are fixedly provided with bosses (10), the two sides of the upper end boss (10) of the lower mold (4) are provided with positioning grooves (11), the two sides inside the positioning grooves (11) are symmetrically provided with detection plates (20), and the two sides of the bottom boss (10) of the upper mold (5) are provided with positioning blocks (12) which are in sliding connection with the positioning grooves (11).

5. The die changing structure of a tungsten wire spool forming machine according to claim 4, wherein: A pressure sensor (21) is mounted between the detection plate (20) and the positioning groove (11), and the two sides of the front end face of the base (1) are provided with indicator lights.

6. The die changing structure of a tungsten wire spooler forming machine according to claim 1, wherein: The two sides of the upper mounting seat (3) are fixedly provided with guide sliding blocks (9), the guide sliding blocks (9) are slidably penetrated by guide rods (8), and the upper and lower ends of the guide rods (8) are fixedly connected with the base (1) and the top plate (6).

7. The die changing structure of a tungsten wire spool former according to claim 1, wherein: The upper end of the top plate (6) is fixedly provided with a hydraulic lifting device (7), and the movable end of the hydraulic lifting device (7) is fixedly connected with the upper mounting seat (3).

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