High-stability injection molding mold for plastic volute
By designing the matching mechanism between sliders and limit blocks in the mold, the problem of plastic volutes not being able to be successfully demolded after injection molding is solved, and the high stability and production efficiency of the mold are improved.
Patent Information
- Application Number
- CN202421749538.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-23
AI Technical Summary
During the injection molding process of plastic volute, the plastic volute cannot be removed smoothly due to the inverted structure of the reinforcement ribs used for molding on the mold.
By designing the matching mechanism between the slider and the limit block in the mold, the slider of the mold can be stably away from the plastic volute when the mold is opened, thereby removing the inverted structure and achieving the smooth release of the plastic volute.
It effectively solves the problem that plastic volutes cannot be demolded smoothly after injection molding, and improves the stability and production efficiency of the mold.
Smart Images
Figure CN222832268U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of molds, in particular to a high-stability injection molding mold for a plastic volute. Background Art
[0002] A plastic volute such as Fig.10 As shown, it includes a base 104, a first shell 105 arranged on the base 104, and a second shell 106 arranged on the base 104. The first shell 105 is provided with a first circular hole 107, and the second shell 106 is provided with a second circular hole 108. The orientation of the first circular hole 107 is different from that of the second circular hole 108. The first shell 105 is also provided with a plurality of reinforcing ribs 109.
[0003] The plastic volute needs to be produced by injection molding. After the plastic volute is injection molded, the molding structure used to form the multiple reinforcing ribs 109 on the mold will form an undercut structure between the multiple reinforcing ribs 109, thereby affecting the smooth molding of the plastic volute. Utility Model Content
[0004] The present application provides a high-stability injection molding mold for a plastic volute, which utilizes the mold opening action to enable two sliders to stably move away from the plastic volute when the mold is opened, thereby releasing the undercut structure between the two sliders and the plastic volute so that the plastic volute can be smoothly demolded.
[0005] The high-stability injection molding mold for a plastic volute provided in this application adopts the following technical solution:
[0006] A high-stability injection molding mold for a plastic volute, comprising an upper mold body and a lower mold body, the upper mold body comprising an upper fixed plate, a fixed mold plate, and four guide columns arranged on the upper fixed plate, the fixed mold plate is slidably connected to the four guide columns, the lower mold body comprises a lower fixed plate, two top plates, two mold feet and a movable mold plate, and an ejection assembly, the fixed mold plate is provided with a cavity, a molding rod for molding a first circular hole, the molding rod is inserted into the cavity, the movable mold plate is provided with a core, the cavity and the core are connected to each other when the mold is closed for molding a base and a second shell, a first slide groove connecting the cavity is provided on the fixed mold plate, two sliders are slidably connected in the first slide groove, the two sliders are respectively located on both sides of the cavity, and the two sliders are provided on the sides close to each other There is a forming groove, two avoidance grooves are provided on the first slide groove, two inclined guide columns are provided on the upper fixed plate, and the distance between the two inclined guide columns gradually decreases from one end close to the upper fixed plate to the other end away from the upper fixed plate, and the two sliding blocks are provided with inclined holes that are plugged into and matched with the inclined guide columns, a pull rod is provided on the upper fixed plate, and a first limit block is provided on the fixed template, the pull rod is slidably connected to the first limit block, and a second limit block for contacting with the first limit block is also provided on the end of the pull rod away from the upper fixed plate. When the mold is closed, the two inclined guide columns respectively pass through the two avoidance grooves and are respectively inserted into the two inclined holes, and the two sliding blocks contact each other and allow the two forming grooves to communicate with each other and wrap the forming rod to form a forming area for forming the first shell.
[0007] By adopting the above technical solution, after the injection molding of the mold is completed, the injection molding machine controls the lower mold body to move away from the upper fixed plate, and when the lower mold body moves, the fixed mold plate will move away from the upper fixed plate with the lower mold body. When the fixed mold plate moves away from the upper fixed plate, the two inclined guide pillars will cooperate with the two inclined holes to convert the force of the fixed mold plate movement into the force of the two sliders, so that the two sliders move away from the already formed first shell, and release the undercut structure between the two sliders and the multiple reinforcing ribs. When the fixed mold plate moves away from the upper fixed plate, the fixed mold plate will move toward the second limit block with the first limit block, and eventually the first limit block will collide with the second limit block. The second limit block limits the movement of the fixed mold plate by limiting the movement of the first limit block. When the first limit block collides with the second limit block, the two sliders no longer block the demolding of the plastic volute, and the fixed mold plate is still on the four guide pillars.
[0008] Preferably, the upper fixed plate is further provided with two third limit blocks, which are respectively located on both sides of the two inclined guide columns, and the two third limit blocks respectively extend into the two avoidance grooves and abut against the ends of the two sliding blocks that are away from each other when the mold is closed.
[0009] By adopting the above technical solution, when the mold is closed, the two third limit blocks are on both sides of the two sliders and press the two sliders together to limit the two sliders, and together with the two inclined guide columns, they prevent the two sliders from separating from each other during the plastic injection molding process, thereby preventing injection molding quality problems such as flash on the plastic volute.
[0010] Preferably, both of the sliding blocks are detachably connected with a first insert, the area of the forming groove used to form multiple reinforcing ribs is opened on the first insert, the first insert is provided with a first T-slot, the sliding block is provided with a second T-slot, the first T-slot and the second T-slot are connected to each other, and the sliding block is also provided with an I-shaped piece, one end of the I-shaped piece is inserted in the first T-slot, and the other end of the I-shaped piece is inserted in the second T-slot.
[0011] By adopting the above technical solution, a first insert is set to improve the exhaust energy of the area of the molding groove used to form multiple reinforcing ribs, which is convenient for exhaust when multiple reinforcing ribs are injection molded, and prevents the reinforcing ribs from being burned, not fully punched, and other quality defects due to trapped air during product injection molding.
[0012] Preferably, a fixing block is provided on the first insert, the first T-slot is opened on the fixing block, first T-slots are opened on both side walls of the fixing block, two second T-slots are opened on the sliding block, the two second T-slots are respectively connected to the two first T-slots, and two I-shaped parts are provided on the sliding block.
[0013] By adopting the above technical solution, the connection strength between the first insert and the slider is improved, and the assembly between the first insert and the slider is simplified.
[0014] Preferably, a mounting groove is formed on the first insert, and two second inserts for forming reinforcing ribs are arranged in the mounting groove.
[0015] By adopting the above technical solution, the exhaust capacity of the forming groove used to form multiple reinforcing rib areas is further improved.
[0016] Preferably, a groove is provided on the fixed template, a molding insert is provided in the groove, the mold cavity is provided on the molding insert, and the first slide groove includes a first groove chamber provided on two opposite side walls of the groove, and a second groove chamber provided on the molding insert and respectively connecting the two first groove chambers.
[0017] By adopting the above technical solution, the fixed template and the forming insert can be processed separately, thereby improving the processing efficiency of the slide groove, the avoidance groove and the cavity, and improving the overall processing efficiency of the fixed template.
[0018] Preferably, sliding grooves are provided on the side walls of the two avoidance grooves, and the ends of the two sliding blocks close to the upper fixed plate respectively extend into the two avoidance grooves and are provided with sliding blocks. The two sliding blocks are respectively slidably connected in the two sliding grooves. A limiting plate is also provided on the fixed template, and the limiting plate is located between the fixed template and the upper fixed plate. The limiting plate is used to limit the two sliding blocks in the two sliding grooves. The limiting plate also has two avoidance grooves, and the two avoidance grooves located on the limiting plate are respectively connected to the two avoidance grooves located on the fixed template.
[0019] By adopting the above technical solution, when assembling the two sliders, the two sliders are directly placed into the slide grooves through the two avoidance grooves, and the two sliding blocks are located in the two sliding grooves. Then, the limit plate is installed on the fixed template with bolts to easily complete the assembly of the two sliders.
[0020] Preferably, the limit plate is further provided with an anti-collision plate, the anti-collision plate is located between the limit plate and the upper fixed plate, the anti-collision plate is provided with two avoidance grooves, and the two avoidance grooves on the anti-collision plate are connected to the two avoidance grooves located on the limit plate.
[0021] By adopting the above technical solution, an anti-collision plate is set to prevent the limit plate from colliding with the upper fixed plate during the mold closing process, prevent the limit plate from being damaged and deformed by the collision, and thus prevent the limit plate from deforming and affecting the sliding of the sliding block.
[0022] Preferably, the movable template is further provided with a second sliding groove, in which a forming block for forming a second circular hole is slidably connected, and the movable template is provided with an oil cylinder, and a piston rod of the oil cylinder is connected to the forming block.
[0023] By adopting the above technical solution, after the product is injection molded, the piston rod of the oil cylinder contracts and slides the molding block away from the already molded second shell, so that the second shell can be demoulded smoothly.
[0024] The technical effects of this utility model are mainly reflected in the following aspects:
[0025] 1. The utility model utilizes the mold opening action to make the two sliders away from the plastic volute when the mold is opened, thereby releasing the undercut structure between the two sliders and the plastic volute so that the plastic volute can be demoulded smoothly;
[0026] 2. The utility model uses the first limit block and the second limit block to ensure that the fixed template will not separate from the four guide pillars when moving;
[0027] 3. The utility model provides a first insert to facilitate exhaust during the injection molding of multiple reinforcing ribs, thereby preventing quality defects such as burning and incomplete punching due to trapped air during the injection molding of the reinforcing ribs. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a structural schematic diagram of the mold of this application.
[0029] Figure 2 It is a structural schematic diagram of the mold of this application from another angle.
[0030] Figure 3 It is a structural schematic diagram of the upper mold body, the limit plate and the anti-collision plate.
[0031] Figure 4 yes Figure 2 Cross-sectional view of the middle and upper mold body, limit plate, and anti-collision plate along line A*A.
[0032] Figure 5 It is a partial cross-sectional view of the upper fixed plate, the limit plate, the anti-collision plate, the fixed template, and the forming insert.
[0033] Figure 6 Figure 3 Schematic diagram of the structure of the middle slider and the forming insert.
[0034] Figure 7 It is a structural explosion diagram of the forming insert and the second insert.
[0035] Figure 8 It is a structural schematic diagram of the lower mold body.
[0036] Fig. 9 yes Figure 8 Schematic diagram of the structure of the mid-motion template.
[0037] Fig.10 It is a structural diagram of a plastic volute.
[0038] Figure numerals: 1, upper mold body; 11, upper fixed plate; 111, inclined guide column; 112, pull rod; 113, second limit block; 114, third limit block; 12, fixed mold plate; 121, first slide groove; 122, slider; 123, forming groove; 124, inclined hole; 125, first limit block; 126, second T-slot; 127, groove; 128, first slot chamber; 129, forming rod; 13, guide column; 2, lower mold body; 21, lower fixed plate; 22, top plate; 23, mold foot; 24, movable mold plate; 241, mold Core; 242, second slide groove; 25, ejector assembly; 3, molding insert; 31, mold cavity; 32, second slot chamber; 4, avoidance groove; 5, first insert; 51, first T-slot; 52, fixing block; 53, mounting groove; 54, second insert; 6, I-shaped part; 71, sliding groove; 72, sliding block; 8, limit plate; 9, anti-collision plate; 101, molding block; 102, oil cylinder; 104, base; 105, first shell; 106, second shell; 107, first circular hole; 108, second circular hole; 109, reinforcing rib. DETAILED DESCRIPTION
[0039] The present application is further described in detail below in conjunction with the accompanying drawings to make the technical solution of the present application easier to understand and grasp.
[0040] Reference Figure 1-Figure 4 The present embodiment is a high-stability injection molding mold for a plastic volute, comprising an upper mold body 1, the upper mold body 1 comprising an upper fixed plate 11, a fixed mold plate 12, and four guide pillars 13 fixed on the upper fixed plate 11, the fixed mold plate 12 being slidably connected to the four guide pillars 13 along the mold opening direction of the mold. A groove 127 is provided on the surface of the fixed mold plate 12 facing the movable mold plate 24, a molding insert 3 is embedded in the groove 127, a molding insert 3 is provided with a mold cavity 31, and a molding rod 129 for molding a first circular hole 107 is fixed on the fixed mold plate 12, and the molding rod 129 is inserted into the groove 127.
[0041] Reference Figure 2-Figure 6 , the first groove chambers 128 are provided on the opposite side walls of the groove 127, and the second groove chamber 32 is provided upwardly on the molding insert 3, and the second groove chamber 32 is located on the side of the mold cavity 31 close to the upper fixing plate 11 and communicates with the mold cavity 31, and the second groove chamber 32 communicates with the mold cavity 31. At the same time, the second groove chamber 32 is respectively connected to the two first groove chambers 128, and the two first groove chambers 128 and the second groove chamber 32 form a slide groove, and two sliders 122 are slidably connected in the first slide groove 121 along the mold opening direction perpendicular to the mold. The two sliders 122 are both provided with molding grooves 123 on the sides close to each other.
[0042] Reference Figure 2-Figure 6 Two avoidance grooves 4 are provided on the groove wall of the first slide groove 121 facing the upper fixed plate 11 along the mold opening direction of the mold, and sliding grooves 71 are provided on the opposite side walls of the two avoidance grooves 4. The ends of the two sliders 122 extend into the two avoidance grooves 4 respectively and two sliding blocks 72 are fixed on each of them. The two sliding blocks 72 on the same slider 122 are slidably connected in the two sliding grooves 71 on the same side along the mold opening direction perpendicular to the mold.
[0043] Reference Figure 2-Figure 6 A limit plate 8 is also fixed on the fixed mold plate 12, and the limit plate is located between the fixed mold plate 12 and the upper fixed plate 11. The limit plate 8 is also slidably connected to the four guide pillars 13 along the mold opening direction of the mold. The limit plate 8 is used to limit the four sliding blocks 72 in the four sliding grooves 71. The limit plate 8 is also provided with two avoidance grooves 4, and the two avoidance grooves 4 on the limit plate 8 are respectively connected to the two avoidance grooves 4 on the fixed mold plate 12.
[0044] Reference Figure 2 , Figure 4As shown in FIG. 5 , an anti-collision plate 9 is also fixed on the limit plate 8, and the anti-collision plate 9 is located between the limit plate 8 and the upper fixed plate 11. The anti-collision plate 9 is also slidably connected to the four guide pillars 13 along the mold opening direction of the mold. Two avoidance grooves 4 are also provided on the anti-collision plate 9, and the two avoidance grooves 4 on the anti-collision plate 9 are connected to the two avoidance grooves 4 on the limit plate 8.
[0045] Reference Figure 2 and Figure 4 Two inclined guide pillars 111 and two third limit blocks 114 are fixed on the upper fixed plate 11. The two third limit blocks 114 are respectively located on both sides of the two inclined guide pillars 111. The distance between the two inclined guide pillars 111 gradually decreases from the end close to the upper fixed plate 11 to the end away from the upper fixed plate 11. The two third limit blocks 114 are provided with inclined surfaces on the sides close to each other along the inclination direction of the adjacent inclined guide pillars 111. Two tie rods 112 are also symmetrically arranged on the upper fixed plate 11, and two first limit blocks 125 are also symmetrically arranged on the fixed mold plate 12. The two second tie rods 112 are respectively slidably connected to the first limit blocks 125 along the mold opening direction of the mold. A second limit block 113 for contacting the first limit block 125 is provided on the end of the two tie rods 112 away from the upper fixed plate 11. When the mold is closed, the two second limiting blocks 113 are respectively located at the side of the two first limiting blocks 125 away from the upper fixing plate 11 .
[0046] Reference Figure 2 and Figure 4 and Figure 5 , the two sliders 122 are each provided with an inclined hole 124 that is plugged into and cooperates with the inclined guide column 111, and at the same time, the two sliders 122 are each provided with an inclined surface on one side away from each other. When the mold is closed, the two inclined guide columns 111 respectively pass through the two avoidance grooves 4 on the anti-collision plate 9 and the two avoidance grooves 4 on the limit plate 8 and are respectively inserted into the two inclined holes 124. At this time, the two forming grooves 123 are interconnected and wrap the forming rod 129 to form a forming area for forming the first shell 105. At the same time, the two third limit blocks 114 respectively pass through the two avoidance grooves 4 on the anti-collision plate 9 and the two avoidance grooves on the limit plate 8 and extend into the two avoidance grooves 4 on the fixed template 12. At this time, the two third sliders 122 are located on both sides of the two sliders 122, and the inclined surfaces on the third limit blocks 114 with adjacent inclined surfaces on the two sliders 122 fit together.
[0047] Reference Figure 6 and Figure 7The first insert 5 can be detachably connected to the two sliders 122. The area of the forming groove 123 for forming a plurality of reinforcing ribs 109 is provided on the first insert 5. The first insert 5 is also provided with an installation groove 53. Two second inserts 54 for forming reinforcing ribs 109 are provided in the installation groove 53. A fixed block 52 is fixed to each first insert 5. The two side walls of the fixed block 52 are provided with a first T-slot 51. Two second T-slots 126 are provided on each slider 122. The two first T-slots 51 on each fixed block 52 are respectively connected to the two second T-slots 126 on each slider 122. Two I-shaped pieces 6 are also provided on each slider 122. When the fixed block 52, the first insert 5 and the slider 122 are connected, the two ends of the I-shaped piece 6 are respectively inserted into the first T-slot 51 and the second T-slot 126 that are connected to each other.
[0048] Reference Figure 8 and Fig. 9 The high-stability injection molding mold for a plastic volute of the present embodiment also includes a lower mold body 2, which includes a lower fixed plate 21, two mold feet 23 respectively fixed on both sides of the lower fixed plate 21, a movable mold plate 24 fixed on the two mold feet 23, two top plates 22 slidably connected between the movable mold plate 24 and the lower fixed plate 21 along the mold opening direction of the mold, and an ejector assembly 25 installed on the two top plates 22.
[0049] Reference Figure 8 and Fig. 9 The movable plate 24 is provided with a core 241, which is inserted into the cavity 31 when the mold is closed. The cavity 31 and the core 241 are connected to each other when the mold is closed to form the base 104 and the second shell 106. The ejector assembly 25 is a plurality of ejector pins, one end of which is fixed on an ejector block, and the other end of which extends into the core 241.
[0050] Reference Figure 8 and Fig. 9 A second slide groove 242 is also provided on the movable template 24. A forming block 101 for forming a second circular hole 108 is slidably connected in the second slide groove 242 along the movement direction of the slider 122. An oil cylinder 102 is provided on the movable template 24. The piston rod of the oil cylinder 102 is connected to the forming block 101.
[0051] Reference Figure 1-Figure 9 The specific injection molding process of the mold in this application is as follows:
[0052] First, the mold is closed, and then the injection molding machine injects hot melt plastic into the mold to make the plastic volute injection molded. Then the molding machine controls the lower mold body 2 to move away from the upper fixed plate 11. When the lower mold body 2 moves, the fixed mold plate 12 will move away from the upper fixed plate 11 along with the lower mold body 2. When the fixed mold plate 12 moves away from the upper fixed plate 11, the two inclined guide pillars 111 will cooperate with the two inclined holes 124 to convert the force of the fixed mold plate 12 into the force of the two sliders 122, so that the two sliders 122 move away from the first shell 105 that has been formed, and release the undercut structure between the two sliders 122 and the multiple reinforcing ribs 109.
[0053] When the fixed template 12 moves away from the upper fixed plate 11, the fixed template 12 will move toward the second limit block 113 with the first limit block 125, and finally the first limit block 125 will collide with the second limit block 113. The second limit block 113 limits the movement of the fixed template 12 by limiting the movement of the first limit block 125. When the first limit block 125 collides with the second limit block 113, the two sliders 122 no longer block the demoulding of the plastic volute, and the fixed template 12 is still on the four guide columns 13.
[0054] Although the fixed plate 12 is no longer moving, the lower mold body 2 will continue to move with the plastic volute under the action of the injection molding machine, so that the movable mold plate 24 moves away from the fixed mold plate 12, so that there is space between the fixed mold plate 12 and the movable mold plate 24 to take the plastic volute. After the lower mold body 2 stops moving, the piston rod of the oil cylinder 102 shrinks and slides the molding block 101 away from the already formed second shell 106. Then the injection molding machine controls the two ejector plates 22 to move toward the movable mold plate 24 so that the ejector pin pushes the plastic volute wrapped on the core 241 out of the core 241 to complete the demoulding of the product.
[0055] After the plastic volute is demoulded, the piston rod of the oil cylinder 102 extends and moves the molding block 101 to reset. Then the injection molding machine controls the lower mold body 2 to move toward the upper fixed plate 11. During this process, the movable plate 24 first collides with the fixed plate 12 and moves toward the upper fixed plate 11 with the fixed plate 12.
[0056] When the fixed template 12 moves toward the upper fixed plate 11, the two first limit blocks 125 will move away from the two second limit blocks 113; and the two sliders 122 will move close to the two inclined guide pillars 111 and allow the two inclined guide pillars 111 to be inserted into the two inclined holes 124, and at the same time, the inclined surfaces of the two third limit blocks 114 are respectively fitted with the inclined surfaces of the two sliders 122. When the two inclined guide posts 111 are inserted into the two inclined holes 124, as the fixed template 12 continues to move, the two inclined guide posts 111 will cooperate with the two inclined holes 124 to convert the force of the fixed template 12 into the movement of the two sliders 122. At the same time, the two third limit blocks 114 will also assist the two inclined guide posts 111 to push the two sliders 122 together, so that the two sliders 122 move closer. Finally, the movable template 24 will press the fixed template 12, the limit plate 8, and the anti-collision plate 9 on the upper fixed plate 11. The two sliders 122 will contact each other and allow the two molding grooves 123 to communicate with each other for molding the first molding cavity 31 of the first shell 105. At this time, the next plastic volute can be injected.
[0057] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.
Claims
1. A high-stability injection molding mold for a plastic volute, comprising an upper mold body (1) and a lower mold body (2), wherein the upper mold body (1) comprises an upper fixed plate (11), a fixed mold plate (12), and four guide pillars (13) arranged on the upper fixed plate (11), wherein the fixed mold plate (12) is slidably connected to the four guide pillars (13), wherein the lower mold body (2) comprises a lower fixed plate (21), two top plates (22), two mold feet (23), a movable mold plate (24), and an ejection assembly (25), wherein the fixed mold plate (12) is provided with a mold cavity (31), and a molding rod (129) for molding a first circular hole (107), wherein the molding rod (129) is inserted into the mold cavity (31), wherein the movable mold plate (24) is provided with a mold core (241), wherein the mold cavity (31) and the mold core (241) are interconnected when the mold is closed for molding a base (104) and a second shell (106), wherein the mold cavity (31) and the mold core (241) are interconnected ... for molding a base (104) and a second shell (106), wherein the mold cavity (31) and the mold core (241) are interconnected when the mold is closed, and wherein the mold cavity (31) and the mold core (241) are interconnected for molding a base (104) and a second shell (106), wherein the mold cavity (31) and the mold core (241 The fixed template (12) is provided with a first slide groove (121) connected to the mold cavity (31), two sliders (122) are slidably connected in the first slide groove (121), the two sliders (122) are respectively located on both sides of the mold cavity (31), and the surfaces of the two sliders (122) close to each other are provided with a molding groove (123), and the first slide groove (121) is provided with two avoidance grooves (4), and the upper fixed plate (11) is provided with two inclined guide pillars (111), and the distance between the two inclined guide pillars (111) gradually decreases from one end close to the upper fixed plate (11) to the other end away from the upper fixed plate (11), and the two sliders (122) are provided with plugs and fittings that are plugged into the inclined guide pillars (111). The upper fixed plate (11) is provided with a pull rod (112), the fixed template (12) is provided with a first limit block (125), the pull rod (112) is slidably connected to the first limit block (125), and the pull rod (112) is also provided with a second limit block (113) on the end away from the upper fixed plate (11) for contacting the first limit block (125). When the mold is closed, the two inclined guide columns (111) respectively pass through the two avoidance grooves (4) and are respectively inserted into the two inclined holes (124), the two sliders (122) contact each other and allow the two molding grooves (123) to communicate with each other and wrap the molding rod (129) to form a molding area for molding the first shell (105).
2. A high-stability injection molding mold for a plastic volute according to claim 1, characterized in that: The upper fixed plate (11) is also provided with two third limit blocks (114), the two third limit blocks (114) are respectively located on both sides of the two inclined guide pillars (111), and the two third limit blocks (114) respectively extend into the two avoidance grooves (4) and abut against the ends of the two sliding blocks (122) that are away from each other when the mold is closed.
3. A high-stability injection molding mold for a plastic volute according to claim 1, characterized in that: The two sliders (122) are both detachably connected with a first insert (5); an area of the molding groove (123) for molding a plurality of reinforcing ribs (109) is provided on the first insert (5); a first T-shaped groove (51) is provided on the first insert (5); a second T-shaped groove (126) is provided on the slider (122); the first T-shaped groove (51) and the second T-shaped groove (126) are connected to each other; an I-shaped piece (6) is also provided on the slider (122); one end of the I-shaped piece (6) is inserted into the first T-shaped groove (51); and the other end of the I-shaped piece (6) is inserted into the second T-shaped groove (126).
4. A high-stability injection molding mold for a plastic volute according to claim 3, characterized in that: The first insert (5) is provided with a fixing block (52), the first T-shaped slot (51) is provided on the fixing block (52), both side walls of the fixing block (52) are provided with first T-shaped slots (51), the sliding block (122) is provided with two second T-shaped slots (126), the two second T-shaped slots (126) are respectively connected to the two first T-shaped slots (51), and the sliding block (122) is provided with two I-shaped parts (6).
5. The high-stability injection molding mold for a plastic volute according to claim 3, characterized in that: The first insert (5) is provided with a mounting groove (53), and two second inserts (54) for forming reinforcing ribs (109) are arranged in the mounting groove (53).
6. The high-stability injection molding mold for a plastic volute according to claim 1, characterized in that: The fixed template (12) is provided with a groove (127), a molding insert (3) is provided in the groove (127), the mold cavity (31) is provided on the molding insert (3), and the first slide groove (121) includes a first groove chamber (128) provided on two side walls opposite to each other of the groove (127), and a second groove chamber (32) provided on the molding insert (3) and respectively connected to the two first groove chambers (128).
7. The high-stability injection molding mold for a plastic volute according to claim 1, characterized in that: The side walls of the two avoidance grooves (4) are each provided with a sliding groove (71); one end of the two sliding blocks (122) close to the upper fixed plate (11) respectively extends into the two avoidance grooves (4) and is provided with a sliding block (72); the two sliding blocks (72) are respectively slidably connected in the two sliding grooves (71); a limiting plate (8) is also provided on the fixed template (12); the limiting plate (8) is located between the fixed template (12) and the upper fixed plate (11); the limiting plate (8) is used to limit the two sliding blocks (72) in the two sliding grooves (71); the limiting plate (8) is also provided with two avoidance grooves (4); the two avoidance grooves (4) located on the limiting plate (8) are respectively connected to the two avoidance grooves (4) located on the fixed template (12).
8. The high-stability injection molding mold for a plastic volute according to claim 7, characterized in that: The limit plate (8) is also provided with an anti-collision plate (9), the anti-collision plate (9) is located between the limit plate (8) and the upper fixed plate (11), the anti-collision plate (9) is provided with two avoidance grooves (4), and the two avoidance grooves (4) on the anti-collision plate (9) are connected to the two avoidance grooves (4) located on the limit plate (8).
9. The high-stability injection molding mold for a plastic volute according to claim 1, characterized in that: The movable template (24) is also provided with a second sliding groove (242), and a forming block (101) for forming a second circular hole (108) is slidably connected in the second sliding groove (242). The movable template (24) is provided with an oil cylinder (102), and the piston rod of the oil cylinder (102) is connected to the forming block (101).
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