A side core-pulling structure of a shrink mold core type two-color mold base

Abstract

The present invention discloses a side core-pulling structure of a shrinkage die core type two-color die set, including: a lower die, a mounting plate is fixedly connected to the surface of the lower die, a cylinder is fixedly connected to the side surface of the mounting plate, the driving end of the cylinder penetrates through the mounting plate, a guide hole is formed in the upper surface of the lower die, an upper die is slidably connected to the inner wall of the lower die at the guide hole, an injection pipe joint is fixedly connected to the upper surface of the upper die, a cleaning device is arranged on the upper surface of the lower die, a supporting device is arranged on the side surface of the mounting plate, and a dredging device is arranged at the connection between the upper die and the injection pipe joint. During the processing of the equipment, the equipment is driven to move up and down, and the guide post is driven to contact the cleaning device, so that the cleaning device gradually wipes the guide post of the equipment, fully cleaning the guide post, and realizing the ability of the equipment to quickly clean dust.

Description

Technical Field

[0001] The invention relates to the technical field of molds, in particular to a shrink mold core-type double-color mold frame side core pulling structure. Background Art

[0002] A mold is a tool that makes a blank into a product with a specific shape and size under the action of external force. It is widely used in blanking, die forging, cold heading, extrusion, powder metallurgy pressing, pressure casting, and compression or injection molding of engineering plastics, rubber, ceramics and other products. The mold has a specific contour or inner cavity shape. The use of a contour shape with a cutting edge can make the blank separate (blanking) according to the shape of the contour line. The use of the inner cavity shape can make the blank obtain a corresponding three-dimensional shape. The mold generally consists of a movable mold and a fixed mold (or a punch and a die), which can be separated or combined. When separated, the product is taken out, and when closed, the blank is injected into the mold cavity for forming. The mold is a precision tool with a complex shape. It bears the expansion force of the blank. It has high requirements for structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important indicators of the level of mechanical manufacturing.

[0003] According to the structure, two-color molds can be divided into: core rotation type, core sliding type, push plate rotation type. Among them, the core rotation type can be divided into two types: split type and one-piece type. The so-called split type is to use two molds installed on one injection molding machine to complete the injection molding of two-color products, and the one-piece type is to complete the injection molding of two-color products in one mold. Among them, the core rotation split type is more widely used.

[0004] However, the existing processing equipment has the following shortcomings:

[0005] The guide posts of the existing equipment are mostly directly exposed to the air, such as CN113927840A. Since the air contains dust and other particles, the dust will adhere to the surface of the guide posts during the processing of the equipment, causing the guide posts to wear when they are moving, resulting in increased wear of the guide posts. At the same time, the driving mechanisms of the existing equipment are mostly fixed by bolts. During the use of the equipment, the fixed parts of the driving mechanisms are prone to fatigue, causing slight deformation of the fixed parts. In addition, when the joints of the existing equipment are blocked, they need to be disassembled for maintenance, resulting in low maintenance efficiency and high maintenance costs.

[0006] Therefore, we proposed a shrink mold core type two-color mold frame side core pulling structure to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a side core-pulling structure of a shrink mold core type two-color mold base. Through a cleaning device connected to the lower mold, using some parts in the device, during the processing of the equipment, when the equipment moves up and down, it will contact the cleaning device, causing the cleaning device to gradually wipe the guide pillars of the equipment, fully cleaning the guide pillars, and realizing the ability of the equipment to quickly clean dust, so as to solve the problems raised in the above background technology.

[0008] To achieve the above purpose, the present invention provides the following technical solutions: A side core-pulling structure of a shrink mold core type two-color mold base, including: a lower mold, a mounting plate is fixedly connected to the surface of the lower mold, a cylinder is fixedly connected to the side surface of the mounting plate, the driving end of the cylinder penetrates through the mounting plate, a guide hole is opened on the upper surface of the lower mold, an upper mold is slidably connected to the inner wall of the lower mold where the guide hole is located, and an injection molding pipe joint is fixedly connected to the upper surface of the upper mold;

[0009] A cleaning device is arranged on the upper surface of the lower mold, a support device is arranged on the side surface of the mounting plate, and a dredging device is arranged at the connection between the upper mold and the injection molding pipe joint;

[0010] The cleaning device includes a positioning column, the positioning column is fixedly connected to the upper surface of the lower mold, an adapter block abuts against the surface of the positioning column, a clamping groove is opened on the inner wall of the adapter block, a cleaning sponge is clamped in the inner wall of the adapter block where the clamping groove is located, a mounting hole is opened on the surface of the adapter block, a support frame is fixedly connected to the inner wall of the adapter block where the mounting hole is located, a sliding hole is opened on the surface of the support frame, a shifting frame is slidably connected to the inner wall of the support frame where the sliding hole is located, a clamping block is rotatably connected to the inner wall of the support frame, a limiting spring is fixedly connected to the surface of the clamping block, and a support block is fixedly connected to the surface of the clamping block. Through the cleaning device connected to the lower mold, using some parts in the device, during the processing of the equipment, when the equipment moves up and down, it will contact the cleaning device, causing the cleaning device to gradually wipe the guide pillars of the equipment, fully cleaning the guide pillars, and realizing the ability of the equipment to quickly clean dust.

[0011] Preferably, a limiting groove is opened on the surface of the positioning column, the mounting hole on the surface of the adapter block communicates with the limiting groove, the adapter block abuts against the surface of the lower mold, the adapter block abuts against the surface of the upper mold, the number of the adapter blocks is two, and the two adapter blocks are symmetrically arranged about the positioning column. The positioning column is provided to initially limit the position of the adapter block.

[0012] Preferably, the cleaning sponge abuts against the surface of the upper mold. The dialing frame penetrates through the connecting block, and the clamping block penetrates through the guiding hole. The clamping block is L-shaped and is clamped with the inner wall of the limiting groove. The cleaning sponge is provided to wipe the dust on the surface of the guide post of the upper mold.

[0013] Preferably, a round hole is formed on the surface of the support block, and the dialing frame is rotatably connected to the inner wall of the round hole. The support block is provided to fix the rotation axis of the clamping block.

[0014] Preferably, the support device includes a fixing frame, which is fixedly connected to the side surface of the mounting plate. Reinforcing ribs are fixedly connected to the surface of the fixing frame, and a binding block is fixedly connected to the surface of the fixing frame. The fixing frame is provided to restrict the position of the buckling frame.

[0015] Preferably, a guiding hole is formed on the surface of the binding block. A positioning block is slidably connected to the inner wall of the guiding hole of the binding block. A pull ring is fixedly connected to the side of the positioning block away from the cylinder, and a restraint spring is fixedly connected to the side of the positioning block close to the pull ring. A buckling frame is slidably connected to the inner wall of the fixing frame. The binding block is provided to guide the moving direction of the positioning block.

[0016] Preferably, a jack is formed on the surface of the fixing frame. The guiding hole on the surface of the binding block is communicated with the jack. The positioning block penetrates through the jack, the positioning block penetrates through the buckling frame, the pull ring penetrates through the guiding hole, the restraint spring is fixedly connected to the inner wall of the guiding hole, a buckling groove is formed on the surface of the cylinder, and the buckling frame abuts against the inner wall of the buckling groove. The restraint spring is provided to restrict the position of the positioning block.

[0017] Preferably, the dredging device includes a transmission toothed ring. An installation groove is formed on the surface of the upper mold. The transmission toothed ring is rotatably connected to the inner wall of the installation groove. A scraping plate is fixedly connected to the inner wall of the transmission toothed ring. A driving gear is rotatably connected to the inner wall of the installation groove of the upper mold. The transmission toothed ring is provided to drive the scraping plate to move.

[0018] Preferably, a connecting column is fixedly connected to the surface of the driving gear. A knob is fixedly connected to the surface of the connecting column. A restraint hole is formed on the surface of the connecting column. A binding frame is slidably connected to the inner wall of the restraint hole. A return spring is fixedly connected to the surface of the binding frame. A positioning ring is fixedly connected to the inner wall of the installation groove of the upper mold. The connecting column is provided to push the driving gear in cooperation with the knob.

[0019] Preferably, the transmission gear ring meshes with the driving gear, the scraping plate abuts against the inner wall of the injection pipe joint, the connecting column is rotatably connected to the inner wall of the installation groove, the knob abuts against the surface of the upper mold, the binding frame penetrates through the knob, the reset spring is fixedly connected to the inner wall of the constraint hole, and the binding frame penetrates through the positioning ring. The binding frame is provided, and the position of the connecting column can be restricted through the cooperation of the binding frame and the positioning ring.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. By providing a cleaning device in the present invention, when the equipment is in processing, the driving mechanism is started. The driving mechanism pushes the upper mold, and the upper mold coincides with the lower mold. Then the raw material is injected into the mold through the injection pipe joint, and the workpiece can be processed. When the upper mold moves, the upper mold guide post contacts the cleaning sponge, and the cleaning sponge gradually wipes the guide post. When the cleaning sponge needs to be replaced, the dialing frame is toggled. The dialing frame pulls the support block, the support block pulls the clamping block, the clamping block squeezes the limit spring, the limit spring is squeezed and deformed, the clamping block loses the restraint of the limit spring and rotates, the clamping block disengages from the positioning post, and at the same time the connecting block is toggled, and the connecting block drives the cleaning sponge to disengage from the equipment, and then the cleaning sponge can be disassembled and replaced. By providing a cleaning device, the cleaning and maintenance effect of the equipment is further increased, the wear degree of the equipment is reduced, the stability of the equipment is improved, and the service life of the equipment is increased.

[0022] 2. By providing a support device in the present invention, after the cylinder is installed, the pull ring is pulled. The pull ring pulls the positioning block, the positioning block squeezes the constraint spring, the constraint spring is squeezed and deformed, the positioning block loses the restraint of the constraint spring and displaces, and disengages from the buckle. The buckle is pushed, and the buckle is clamped to the surface of the cylinder. Then the pull ring is released, the positioning block loses the pulling force of the pull ring, the constraint spring rebounds without the pressure of the positioning block, the positioning block is pushed back to its original position by the constraint spring, and the buckle is fixed again. By providing a support device, the strain of the connection part is reduced, the support of the equipment for the cylinder is further improved, and the fixing effect of the equipment is increased.

[0023] 3. By providing a dredging device in the present invention, when the injection pipe joint is blocked, the binding frame is pressed. The binding frame squeezes the reset spring, the reset spring is squeezed and deformed, the binding frame loses the restraint of the reset spring and displaces and disengages from the positioning ring. The knob is rotated, the knob drives the connecting column, the connecting column drives the driving gear, the driving gear drives the transmission gear ring, and the transmission gear ring rotates to drive the scraping plate, and the scraping plate moves to dredge the injection pipe joint. By providing a dredging device, the dredging cost of the equipment is reduced, the dredging efficiency of the equipment is improved, and the convenience of equipment maintenance is further increased. Description of the Drawings

[0024] Figure 1It is the front view three-dimensional structure diagram of the side core-pulling structure of the core type two-color die set of the shrinkage mold of the present invention;

[0025] Figure 2 It is for the side core-pulling structure of the core type two-color die set of the shrinkage mold of the present invention Figure 1 The three-dimensional structure diagram of the structure at A in it;

[0026] Figure 3 It is the bottom view three-dimensional structure diagram of the side core-pulling structure of the core type two-color die set of the shrinkage mold of the present invention;

[0027] Figure 4 It is for the side core-pulling structure of the core type two-color die set of the shrinkage mold of the present invention Figure 3 The enlarged three-dimensional structure diagram of the structure at B in it;

[0028] Figure 5 It is the enlarged three-dimensional structure diagram of the cleaning device structure of the side core-pulling structure of the core type two-color die set of the shrinkage mold of the present invention;

[0029] Figure 6 It is for the side core-pulling structure of the core type two-color die set of the shrinkage mold of the present invention Figure 5 The enlarged three-dimensional structure diagram of the structure at C in it;

[0030] Figure 7 It is the enlarged three-dimensional structure diagram of the support device structure of the side core-pulling structure of the core type two-color die set of the shrinkage mold of the present invention;

[0031] Figure 8 It is the enlarged three-dimensional structure diagram of the dredging device structure of the side core-pulling structure of the core type two-color die set of the shrinkage mold of the present invention;

[0032] Figure 9 It is for the side core-pulling structure of the core type two-color die set of the shrinkage mold of the present invention Figure 8 The enlarged three-dimensional structure diagram of the structure at D in it.

[0033] In the figure: 1. Lower mold; 2. Mounting plate; 3. Cylinder; 4. Upper mold; 5. Injection molding pipe joint; 6. Cleaning device; 61. Positioning column; 62. Connecting block; 63. Cleaning sponge; 64. Support frame; 65. Pushing frame; 66. Clamping block; 67. Limiting spring; 68. Support block; 7. Support device; 71. Fixed frame; 72. Reinforcing rib; 73. Binding block; 74. Positioning block; 75. Pulling ring; 76. Constraint spring; 77. Buckling frame; 8. Dredging device; 81. Driving gear ring; 82. Scraper; 83. Driving gear; 84. Connecting column; 85. Knob; 86. Binding frame; 87. Reset spring; 88. Positioning ring. Detailed implementation manners

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0035] Please refer to Figures 1-9 As shown, the present invention provides a technical solution: a side core-pulling structure of a shrinkage die core type two-color die set, including: a lower die 1, a mounting plate 2 fixedly connected to the surface of the lower die 1, a cylinder 3 fixedly connected to the side surface of the mounting plate 2, the driving end of the cylinder 3 penetrates through the mounting plate 2, a guide hole is opened on the upper surface of the lower die 1, an upper die 4 is slidably connected to the inner wall of the lower die 1 where the guide hole is located, an injection pipe joint 5 is fixedly connected to the upper surface of the upper die 4, a cleaning device 6 is arranged on the upper surface of the lower die 1, a support device 7 is arranged on the side surface of the mounting plate 2, and a dredging device 8 is arranged at the connection between the upper die 4 and the injection pipe joint 5.

[0036] According to Figures 5-6 As shown, the cleaning device 6 includes a positioning column 61 fixedly connected to the upper surface of the lower die 1, an adapter block 62 abuts against the surface of the positioning column 61, a card slot is opened on the inner wall of the adapter block 62, a cleaning sponge 63 is clamped in the inner wall of the adapter block 62 where the card slot is located, a mounting hole is opened on the surface of the adapter block 62, a support frame 64 is fixedly connected to the inner wall of the adapter block 62 where the mounting hole is located, a sliding hole is opened on the surface of the support frame 64, a shifting frame 65 is slidably connected to the inner wall of the support frame 64 where the sliding hole is located, a clamping block 66 is rotatably connected to the inner wall of the support frame 64, a limiting spring 67 is fixedly connected to the surface of the clamping block 66, and a support block 68 is fixedly connected to the surface of the clamping block 66. Through the cleaning device 6 connected to the lower die 1, by using some parts in the device, during the processing of the equipment, when the equipment moves up and down, it will contact the cleaning device 6, so that the cleaning device 6 gradually wipes the guide pillar of the equipment, fully cleaning the guide pillar, and realizing the ability of the equipment to quickly clean the dust.

[0037] According to Figures 5-6 As shown, a limiting groove is opened on the surface of the positioning column 61, the mounting hole on the surface of the adapter block 62 is communicated with the limiting groove, the adapter block 62 abuts against the surface of the lower die 1, the adapter block 62 abuts against the surface of the upper die 4, the number of the adapter blocks 62 is two, and the two adapter blocks 62 are symmetrically arranged about the positioning column 61. The positioning column 61 is provided, and the position of the adapter block 62 can be preliminarily limited through the positioning column 61.

[0038] According to Figures 5-6As shown, the cleaning sponge 63 abuts against the surface of the upper mold 4. The dialing frame 65 is arranged through the connecting block 62, and the clamping block 66 is arranged through the guiding hole. The clamping block 66 is L-shaped, and the clamping block 66 is clamped with the inner wall of the limiting groove. The cleaning sponge 63 is provided, and the dust on the surface of the guide post of the upper mold 4 can be wiped through the cleaning sponge 63.

[0039] According to Figures 5-6 As shown, a round hole is formed on the surface of the support block 68, and the dialing frame 65 is rotatably connected to the inner wall of the round hole. The support block 68 is provided, and the rotation axis of the clamping block 66 can be fixed through the support block 68.

[0040] According to Figure 7 As shown, the support device 7 includes a fixed frame 71. The fixed frame 71 is fixedly connected to the side surface of the mounting plate 2. A reinforcing rib 72 is fixedly connected to the surface of the fixed frame 71, and a binding block 73 is fixedly connected to the surface of the fixed frame 71. The fixed frame 71 is provided, and the position of the buckling frame 77 can be restricted through the fixed frame 71.

[0041] According to Figure 7 As shown, a guiding hole is formed on the surface of the binding block 73. A positioning block 74 is slidably connected to the inner wall of the guiding hole of the binding block 73. A pull ring 75 is fixedly connected to the side of the positioning block 74 away from the air cylinder 3, and a restraint spring 76 is fixedly connected to the side of the positioning block 74 close to the pull ring 75. A buckling frame 77 is slidably connected to the inner wall of the fixed frame 71. The binding block 73 is provided, and the moving direction of the positioning block 74 can be guided through the binding block 73.

[0042] According to Figure 7 As shown, a jack is formed on the surface of the fixed frame 71. The guiding hole on the surface of the binding block 73 is communicated with the jack. The positioning block 74 is arranged through the jack, the positioning block 74 is arranged through the buckling frame 77, the pull ring 75 is arranged through the guiding hole, the restraint spring 76 is fixedly connected to the inner wall of the guiding hole, a buckling groove is formed on the surface of the air cylinder 3, and the buckling frame 77 abuts against the inner wall of the buckling groove. The restraint spring 76 is provided, and the position of the positioning block 74 can be restricted through the restraint spring 76.

[0043] According to Figures 8-9 As shown, the dredging device 8 includes a transmission gear ring 81. An installation groove is formed on the surface of the upper mold 4, and the transmission gear ring 81 is rotatably connected to the inner wall of the installation groove. A scraping plate 82 is fixedly connected to the inner wall of the transmission gear ring 81, and a driving gear 83 is rotatably connected to the inner wall of the installation groove of the upper mold 4. The transmission gear ring 81 is provided, and the scraping plate 82 can be driven to move through the transmission gear ring 81.

[0044] According to Figures 8-9As shown in the figure, a connecting column 84 is fixedly connected to the surface of the driving gear 83. A knob 85 is fixedly connected to the surface of the connecting column 84. A restraint hole is formed in the surface of the connecting column 84. A restraint frame 86 is slidably connected to the inner wall of the restraint hole. A return spring 87 is fixedly connected to the surface of the restraint frame 86. A positioning ring 88 is fixedly connected to the inner wall of the installation groove where the upper mold 4 is located. By providing the connecting column 84, the driving gear 83 can be pushed through the cooperation of the connecting column 84 and the knob 85.

[0045] According to Figures 8-9 As shown in the figure, the transmission gear ring 81 is meshed with the driving gear 83. The scraping plate 82 abuts against the inner wall of the injection molding pipe joint 5. The connecting column 84 is rotatably connected to the inner wall of the installation groove. The knob 85 abuts against the surface of the upper mold 4. The restraint frame 86 is arranged through the knob 85. The return spring 87 is fixedly connected to the inner wall of the restraint hole. The restraint frame 86 is arranged through the positioning ring 88. By providing the restraint frame 86, the position of the connecting column 84 can be restricted through the cooperation of the restraint frame 86 and the positioning ring 88.

[0046] The effect achieved by the entire mechanism is as follows: When the device is in processing, the driving mechanism is started. The driving mechanism pushes the upper mold 4, and the upper mold 4 coincides with the lower mold 1. Then, the raw material is injected into the mold through the injection pipe joint 5, and the workpiece can be processed. When the upper mold 4 moves, the guide pillar of the upper mold 4 contacts the cleaning sponge 63, and the cleaning sponge 63 gradually wipes the guide pillar. When the cleaning sponge 63 needs to be replaced, the dial frame 65 is toggled. The dial frame 65 pulls the support block 68, the support block 68 pulls the clamping block 66, the clamping block 66 squeezes the limit spring 67, and the limit spring 67 is squeezed and deformed. The clamping block 66 loses the restraint of the limit spring 67 and rotates. The clamping block 66 disengages from the positioning column 61. At the same time, the connecting block 62 is toggled, and the connecting block 62 drives the cleaning sponge 63 to disengage from the device. Then, the cleaning sponge 63 can be disassembled and replaced. By setting the cleaning device 6, the cleaning and maintenance effect of the device is further enhanced, the wear degree of the device is reduced, the stability of the device is improved, and the service life of the device is increased. At the same time, by setting the support device 7, after the cylinder 3 is installed, the pull ring 75 is pulled. The pull ring 75 pulls the positioning block 74, the positioning block 74 squeezes the restraint spring 76, and the restraint spring 76 is squeezed and deformed. The positioning block 74 loses the restraint of the restraint spring 76 and displaces, and disengages from the buckle 77. The buckle 77 is pushed, and the buckle 77 is clamped to the surface of the cylinder 3. Then, the pull ring 75 is released. The positioning block 74 loses the pulling force of the pull ring 75, and the restraint spring 76 rebounds without the pressure of the positioning block 74. The positioning block 74 is pushed back to its original position by the restraint spring 76 and fixes the buckle 77 again. By setting the support device 7, the strain of the connection part is reduced, the support of the device for the cylinder 3 is further improved, and the fixing effect of the device is increased. In addition, by setting the dredging device 8, when the injection pipe joint 5 is blocked, the restraint frame 86 is pressed. The restraint frame 86 squeezes the return spring 87, and the return spring 87 is squeezed and deformed. The restraint frame 86 loses the restraint of the return spring 87 and displaces and disengages from the positioning ring 88. The knob 85 is rotated. The knob 85 drives the connecting column 84, the connecting column 84 drives the driving gear 83, the driving gear 83 drives the transmission gear ring 81, and the transmission gear ring 81 rotates to drive the scraper 82. The scraper 82 moves to dredge the injection pipe joint 5. By setting the dredging device 8, the dredging cost of the device is reduced, the dredging efficiency of the device is improved, and the convenience of device maintenance is further increased.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A side core-pulling structure of a shrinkage die core type two-color die set, characterized in that: include: A lower mold (1), the surface of the lower mold (1) is fixedly connected to a mounting plate (2), the side surface of the mounting plate (2) is fixedly connected to a cylinder (3), the driving end of the cylinder (3) is arranged to penetrate the mounting plate (2), the upper surface of the lower mold (1) is provided with a guide hole, the lower mold (1) is slidably connected to an upper mold (4) on the inner wall of the guide hole, and the upper surface of the upper mold (4) is fixedly connected to an injection pipe joint (5); The upper surface of the lower mold (1) is provided with a cleaning device (6), the side surface of the mounting plate (2) is provided with a supporting device (7), and the connection between the upper mold (4) and the injection pipe joint (5) is provided with a dredging device (8); The cleaning device (6) comprises a positioning column (61), the positioning column (61) is fixedly connected to the upper surface of the lower mold (1), the surface of the positioning column (61) is abutted against a connecting block (62), the inner wall of the connecting block (62) is provided with a slot, the connecting block (62) is located on the inner wall of the slot and is connected with a cleaning sponge (63), the surface of the connecting block (62) is provided with a mounting hole, the connecting block (62) is located on the inner wall of the mounting hole and is fixedly connected to a support frame (64), the surface of the support frame (64) is provided with a sliding hole, the support frame (64) is located on the inner wall of the sliding hole and is slidably connected to a shifting frame (65), the inner wall of the support frame (64) is rotatably connected to a clamping block (66), the surface of the clamping block (66) is fixedly connected to a limiting spring (67), and the surface of the clamping block (66) is fixedly connected to a support block (68); When the cleaning sponge (63) needs to be replaced, the shifting frame (65) is moved, the shifting frame (65) pulls the supporting block (68), the supporting block (68) pulls the clamping block (66), the clamping block (66) squeezes the limiting spring (67), the limiting spring (67) is squeezed and deformed, the clamping block (66) loses the constraint of the limiting spring (67) and rotates, the clamping block (66) is separated from the positioning column (61), and the connecting block (62) is shifted at the same time, the connecting block (62) drives the cleaning sponge (63) to separate from the device, and then the cleaning sponge (63) is disassembled and replaced.

2. The side core-pulling structure of the shrinkage die core type two-color die set according to claim 1, wherein: A limiting groove is provided on the surface of the positioning column (61), and a mounting hole on the surface of the connecting block (62) is connected to the limiting groove. The connecting block (62) abuts against the surface of the lower mold (1), and the connecting block (62) abuts against the surface of the upper mold (4). There are two connecting blocks (62), and the two connecting blocks (62) are arranged symmetrically with respect to the positioning column (61).

3. The side core-pulling structure of the shrinkage die core type two-color die set according to claim 1, characterized in that: The cleaning sponge (63) is in contact with the surface of the upper mold (4); the shifting frame (65) is arranged through the connecting block (62); the clamping block (66) is arranged through the guide hole; the clamping block (66) is arranged in an L shape; and the clamping block (66) is clamped with the inner wall of the limiting groove.

4. The side core-pulling structure of the shrinkage die core type two-color die set according to claim 1, characterized in that: A circular hole is formed on the surface of the support block (68), and the shifting frame (65) is rotatably connected to the inner wall of the circular hole.

5. The side core-pulling structure of the shrinkage die core type two-color die set according to claim 1, characterized in that: The support device (7) includes a fixing frame (71), the fixing frame (71) is fixedly connected to the side surface of the mounting plate (2), a reinforcing rib (72) is fixedly connected to the surface of the fixing frame (71), and a binding block (73) is fixedly connected to the surface of the fixing frame (71).

6. The side core-pulling structure of the shrinkage die core type two-color die set according to claim 5, wherein: A guiding hole is formed in the surface of the binding block (73). A positioning block (74) is slidably connected to the inner wall of the guiding hole of the binding block (73). A pull ring (75) is fixedly connected to the side of the positioning block (74) away from the air cylinder (3). A restraint spring (76) is fixedly connected to the side of the positioning block (74) close to the pull ring (75). A fastening frame (77) is slidably connected to the inner wall of the fixing frame (71).

7. The side core-pulling structure of the shrinkage mold core type two-color mold base according to claim 6, characterized in that: A jack is formed in the surface of the fixing frame (71). The guiding hole on the surface of the binding block (73) communicates with the jack. The positioning block (74) penetrates through the jack. The positioning block (74) penetrates through the fastening frame (77). The pull ring (75) penetrates through the guiding hole. The restraint spring (76) is fixedly connected to the inner wall of the guiding hole. A fastening groove is formed in the surface of the air cylinder (3). The fastening frame (77) abuts against the inner wall of the fastening groove.

8. The side core-pulling structure of the shrinkage die core type two-color die set according to claim 1, wherein: The dredging device (8) includes a transmission gear ring (81). An installation groove is formed in the surface of the upper mold (4). The transmission gear ring (81) is rotatably connected to the inner wall of the installation groove. A scraping plate (82) is fixedly connected to the inner wall of the transmission gear ring (81). A driving gear (83) is rotatably connected to the inner wall of the installation groove of the upper mold (4).

9. The side core-pulling structure of the shrinkage die core type two-color die set according to claim 8, characterized in that: A connecting column (84) is fixedly connected to the surface of the driving gear (83). A knob (85) is fixedly connected to the surface of the connecting column (84). A restraint hole is formed in the surface of the connecting column (84). A binding frame (86) is slidably connected to the inner wall of the restraint hole. A return spring (87) is fixedly connected to the surface of the binding frame (86). A positioning ring (88) is fixedly connected to the inner wall of the installation groove of the upper mold (4).

10. The side core-pulling structure of the shrinkage die core type two-color die set according to claim 9, characterized in that: The transmission gear ring (81) meshes with the driving gear (83). The scraping plate (82) abuts against the inner wall of the injection molding pipe joint (5). The connecting column (84) is rotatably connected to the inner wall of the installation groove. The knob (85) abuts against the surface of the upper mold (4). The binding frame (86) penetrates through the knob (85). The return spring (87) is fixedly connected to the inner wall of the restraint hole. The binding frame (86) penetrates through the positioning ring (88).

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