Low bubble LSR soft and hard rubber composite injection molding device

Abstract

This invention provides a low-bubbling LSR soft and hard plastic composite injection molding device, relating to the field of injection molding production technology. It includes: fixed shells fixed to the left and right sides of the top surface of the placement base and the left and right sides of the bottom surface of the sliding seat; mold seats are provided on both the top surface of the placement base and the bottom surface of the sliding seat; connecting slots are provided on the adjacent inner sides of the fixed shells; through the coordinated linkage of the fixed shells, contact blocks, and limiting sliders, the mold seats can be fixed, simplifying the tedious and repetitive adjustment steps in traditional mold installation, shortening the mold installation time, effectively avoiding inaccurate fixing due to human error, and solving the problem that when reinstalling injection molds, the lack of auxiliary structures often necessitates repeated manual trial and fine-tuning to complete the fixing operation, making it difficult to guarantee the installation and fixing accuracy of the mold, and easily causing subsequent injection defects due to positional deviations.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and in particular to a low-bubbling LSR soft and hard rubber composite injection molding device. Background Technology

[0002] The LSR soft and hard plastic composite injection molding device, equipped with a precision metering pump with vacuum degassing function and a static mixer, eliminates air bubbles in the raw materials at the source. It precisely injects the mixed liquid silicone into the mold cavity with vacuum assistance function, completing a bubble-free secondary coating or two-color molding on the surface of the rigid plastic substrate. This results in high-quality composite products that combine sealing and elasticity. When reinstalling the injection mold, the lack of auxiliary structures often necessitates repeated manual trial and fine-tuning to complete the fixing operation. This makes it difficult to ensure the installation and fixing accuracy of the mold, which can easily cause subsequent injection defects due to positional deviations. This increases the complexity and time consumption of maintenance operations, making the entire maintenance process extremely inconvenient. Summary of the Invention

[0003] This invention application discloses a low-bubbling LSR soft and hard rubber composite injection molding device to solve the problem mentioned in the background art that when reinstalling injection molds, the lack of auxiliary structures often forces manual repeated trial and fine adjustment to complete the fixing operation, making it difficult to ensure the installation and fixing accuracy of the mold and easily causing subsequent injection defects due to positional deviations.

[0004] This invention provides a low-bubbling LSR soft and hard rubber composite injection molding device, specifically comprising: a device base, a processing space in the middle of the device base, a placement base sliding below the space, and a sliding seat sliding above the space; fixed shells fixed on the left and right sides of the top surface of the placement base and the left and right sides of the bottom surface of the sliding seat; mold seats provided on the top surface of the placement base and the bottom surface of the sliding seat; connecting slots provided on the adjacent inner sides of the fixed shells; a connecting shell fixed on the top surface of the fixed shells; a sliding space provided inside the connecting shells, and a fixed slider sliding inside the space; a limit groove provided on the bottom surface of the fixed slider; a limiting slider sliding below the inside of the fixed shells; a contact block fixed at the right end of the limiting slider; a lower mold fixed on the top surface of the mold seat on the placement base; four placement slots provided on the top surface of the lower mold; a detection shell fixed inside the placement slots; two fixed side blocks fixed on the left and right sides of the mold seat; a fixed slot provided on the outer side of the fixed side blocks; a sliding space provided inside the detection shells, and a detection slider sliding in the space; a trigger side block fixed below the outer side of the detection slider; and a proximity switch installed on the bottom surface of the detection shells via a threaded connection.

[0005] Furthermore, a spring is installed between the fixed slider and the fixed shell; a protective baffle is fixed in the middle of the top surface of the connecting block; the number of limiting sliders is set to two, and a spring is installed between the limiting slider and the fixed shell; the upper part of the contact block is slidably connected to the connecting slot; a spring is installed between the detection slider and the detection shell; the fixed side block matches the connecting slot; the number of fixed shells is set to two; and a connecting block is fixed between the fixed sliders.

[0006] Furthermore, a transmission hydraulic cylinder is fixed on the top surface of the device base; the piston rod of the transmission hydraulic cylinder can drive the sliding seat to slide; four limiting rods are fixed in the middle of the device base; the sliding seat and the limiting rods are slidably connected.

[0007] Furthermore, a control panel is fixed to the right side of the front end of the device base; the placement base slides on the device base via an electric slide rail; both the top surface of the placement base and the bottom surface of the sliding base are provided with fixing blocks; the fixing blocks can clamp and fix the mold base with fixing screws.

[0008] Furthermore, the lower mold has limit holes at the four corners of its top surface; a placement seat is fitted onto the top surface of the lower mold; and eight limit side blocks are fixed to the top surface of the lower mold.

[0009] Furthermore, two limiting cylinders are fixed on the left and right sides of the lower mold; two connecting stops are fixed on the top surface of the lower mold, and connecting notches are opened on the left and right sides of the connecting stops; an upper mold is fixed on the bottom surface of the mold seat of the sliding seat.

[0010] Furthermore, the lower mold has a sliding top plate at its bottom; four top pillars are fixed on the top surface of the sliding top plate; the sliding top plate can move upward via an electric push cylinder; the top surface of the top pillars is slidably connected to the placement groove; injection molding components are fixed at the front ends of the upper and lower molds; limit plugs are symmetrically fixed on the bottom surface of the upper mold; the limit plugs match the limit holes; and a mold groove is opened on the bottom surface of the upper mold.

[0011] Furthermore, the rear end of the placement seat is connected to an ejector screw via a threaded connection; a limiting notch is provided in the middle of the rear end of the placement seat; and an injection molding groove is provided at the front end of the placement seat.

[0012] The low-bubbling LSR soft and hard rubber composite injection molding device provided by the present invention has the following beneficial effects: Through the coordinated action of the fixed shell, contact block, and limiting slider, the mold base can be fixed, making subsequent maintenance and installation of the mold base much simpler. Simply insert the fixed side blocks on both sides of the mold base directly into the corresponding connecting slots on the fixed shell. The fixed side blocks will touch the contact block and move downwards, thus completely releasing the sliding constraint of the fixed slider. At this time, the fixed slider will be inserted into the pre-set fixed slot on the mold base by the spring, thereby achieving a quick initial locking of the mold base. As a result, the operator can position the mold base without repeated probing and calibration, simplifying the tedious and repeated adjustment steps in the traditional mold installation process, shortening the mold installation time, and effectively avoiding inaccurate fixing caused by human operation deviation.

[0013] During the injection molding process, the placement position of the placement seat is detected by the detection sliders. The placement seat will make linkage contact with the detection sliders. Only when the placement seat is accurately positioned according to the preset specifications will the four detection sliders move downward synchronously. Then, the trigger block fixed to its side will trigger the corresponding proximity switch. At this time, the proximity switch will immediately send a positioning confirmation signal to the control panel. After receiving all four signals, the control panel will authorize and start the electric slide rail to drive the placement base to enter the subsequent working cycle. This can fundamentally eliminate the hidden dangers of reduced injection molding accuracy, uneven product wall thickness, or even mold damage caused by forcibly starting processing due to inaccurate placement seat positioning. It can also remind the operator to readjust with real-time signal feedback, effectively avoiding the generation of batches of defective products due to misjudgment, thereby ensuring the consistency of processing quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the overall axial three-dimensional structure of the low-bubbling LSR soft and hard rubber composite injection molding device according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the device base structure of a low-bubbling LSR soft and hard rubber composite injection molding device according to an embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the fixed shell of the low-bubbling LSR soft and hard rubber composite injection molding device according to an embodiment of the present invention.

[0019] Figure 4This is a schematic diagram of the fixed slider structure of a low-bubbling LSR soft and hard rubber composite injection molding device according to an embodiment of the present invention.

[0020] Figure 5 This is a schematic diagram of the structure of the low-bubbling LSR soft and hard rubber composite injection molding device according to an embodiment of the present invention, when the limiting slider is inserted into the limiting groove.

[0021] Figure 6 This is a schematic diagram of the mold base structure of a low-bubbling LSR soft and hard rubber composite injection molding device according to an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the placement groove structure of a low-bubbling LSR soft and hard rubber composite injection molding device according to an embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the upper mold structure of a low-bubbling LSR soft and hard rubber composite injection molding device according to an embodiment of the present invention.

[0024] Figure 9 This is a schematic diagram of the placement structure of the low-bubbling LSR soft and hard rubber composite injection molding device according to an embodiment of the present invention.

[0025] Figure 10 This is a schematic diagram of the disassembly structure of the detection shell of the low-bubbling LSR soft and hard rubber composite injection molding device according to an embodiment of the present invention.

[0026] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Device base; 101. Placement base; 102. Sliding seat; 103. Fixed shell; 104. Connecting slot; 105. Connecting shell; 106. Fixed slider; 107. Limiting groove; 108. Connecting block; 109. Protective baffle; 110. Limiting slider; 111. Contact block; 112. Transmission hydraulic cylinder; 113. Limiting rod; 114. Control panel; 115. Fixed clamping block; 2. Mold base; 201. Lower mold; 202. Fixed side block; 203. Fixed slot; 204. Limiting hole; 205. Limiting side block; 206. Placement slot; 207. Limiting cylinder; 208. Connecting stop; 209. Upper mold; 210. Sliding top plate; 211. Ejector pillar; 212. Injection assembly; 213. Limiting plug; 214. Mold groove; 3. Placement base; 301. Ejector screw; 302. Limiting notch; 303. Injection tank; 4. Detection housing; 401. Detection slider; 402. Trigger side block; 403. Proximity switch. Detailed Implementation

[0027] Example: As attached Figure 1 To be continued Figure 10As shown, this invention proposes a low-bubbling LSR soft and hard rubber composite injection molding device, comprising: a device base 1, a processing space in the middle of the device base 1, a placement base 101 sliding below the space, and a sliding seat 102 sliding above the space; fixed shells 103 are fixed on the left and right sides of the top surface of the placement base 101 and the left and right sides of the bottom surface of the sliding seat 102; mold seats 2 are provided on the top surface of the placement base 101 and the bottom surface of the sliding seat 102; the number of fixed shells 103 is set to two; a connecting slot 104 is provided on the adjacent inner side of the fixed shells 103; a connecting shell 105 is fixed on the top surface of the fixed shells 103; a sliding space is provided inside the connecting shells 105, and a fixed slider 106 slides inside the space; a limit groove 107 is provided on the bottom surface of the fixed slider 106; a spring is installed between the fixed slider 106 and the fixed shell 103; a connecting block 108 is fixed between the fixed sliders 106; a protective baffle 109 is fixed in the middle of the top surface of the connecting block 108; the fixed shells 103 and the fixed shells 103 are further described above. 03. A limiting slider 110 slides inside the lower part of the device. Two limiting sliders 110 are provided. A spring is installed between the limiting slider 110 and the fixed shell 103. A contact block 111 is fixed to the right end of the limiting slider 110. The upper part of the contact block 111 is slidably connected to the connecting slot 104. A transmission hydraulic cylinder 112 is fixed to the top surface of the device base 1. The piston rod of the transmission hydraulic cylinder 112 can drive the sliding seat 102 to slide. Four limit rods 113 are fixed in the middle of the device base 1. The sliding seat 102 is slidably connected to the limit rods 113. A control panel 114 is fixed to the right side of the front end of the device base 1. The placement base 101 slides on the device base 1 via an electric slide rail. Fixed clamping blocks 115 are provided on the top surface of the placement base 101 and the bottom surface of the sliding seat 102. The fixed clamping blocks 115 can clamp and fix the mold base 2 with fixing screws. The fixed clamping blocks 115 can assist in clamping and fixing the mold base 2 with fixing screws, forming a double fixing structure with the fixed slider 106.

[0028] As attached Figure 6 To be continued Figure 8As shown, a lower mold 201 is fixed on the top surface of the mold base 2, which is set on the placement base 101; two fixing side blocks 202 are fixed on both the left and right sides of the mold base 2; the fixing side blocks 202 match the connecting slots 104; a fixing slot 203 is opened on the outer side of the fixing side blocks 202; limit holes 204 are opened at the four corners of the top surface of the lower mold 201; a placement seat 3 is engaged on the top surface of the lower mold 201; eight limit side blocks 205 are fixed on the top surface of the lower mold 201; four placement slots 206 are opened on the top surface of the lower mold 201; a detection shell 4 is fixed inside the placement slots 206; two limit cylinders 207 are fixed on the left and right sides of the lower mold 201; two connecting stops 208 are fixed on the top surface of the lower mold 201, and connecting notches are opened on the left and right sides of the connecting stops 208; the wire harness used to guide the workpiece to be processed extends from the inside of the lower mold 201 to the outside. To prevent the wire harness from being damaged during mold closing; an upper mold 209 is fixed to the bottom surface of the mold base 2 on the sliding base 102; a sliding top plate 210 slides on the bottom of the lower mold 201; four top posts 211 are fixed on the top surface of the sliding top plate 210; the sliding top plate 210 can move upward by an electric push cylinder; the top surface of the top posts 211 is slidably connected to the placement groove 206; an injection molding assembly 212 is fixed to the front end of the upper mold 209 and the lower mold 201, which is used to inject liquid silicone into the mold groove 214 after mold closing to achieve injection molding; a limit plug 213 is symmetrically fixed on the bottom surface of the upper mold 209; the limit plug 213 matches the limit hole 204; when the mold is closed, the limit plug 213 is inserted into the limit hole 204 to ensure the mold closing alignment accuracy between the upper mold 209 and the lower mold 201; a mold groove 214 is opened on the bottom surface of the upper mold 209.

[0029] As attached Figure 9 As shown, the rear end of the placement seat 3 is connected to an ejector screw 301 via a threaded connection; the operator can easily eject the molded product from the injection tank 303 by rotating the ejector screw 301; a limiting notch 302 is provided in the middle of the rear end of the placement seat 3; an injection tank 303 is provided at the front end of the placement seat 3; the inner cavity shape of the injection tank 303 matches the shape of the workpiece to be processed, so as to ensure that the rubber material uniformly covers the workpiece during injection.

[0030] As attached Figure 10 As shown, a sliding space is provided inside the detection housing 4, and a detection slider 401 slides through the space; a spring is installed between the detection slider 401 and the detection housing 4; a trigger side block 402 is fixed to the lower outer side of the detection slider 401; a proximity switch 403 is installed on the bottom surface of the detection housing 4 via a threaded connection; when the placement seat 3 is correctly placed in position, the placement seat 3 presses the detection slider 401 to slide downward, and the trigger side block 402 moves down and enters the sensing area of ​​the proximity switch 403, causing the proximity switch 403 to generate a position signal and send it to the control panel 114; otherwise, there is no signal output, thereby realizing reliable detection and interlocking control of the placement state of the placement seat 3.

[0031] The specific usage and function of this embodiment are as follows: During the injection molding process, the workpiece is placed into the injection groove 303 at the front end of the placement seat 3, and then the placement seat 3 is placed into the placement groove 206. The piston rod of the limiting cylinder 207 can limit the placement seat 3 through the limiting notch 302, so that the placement seat 3 can be placed in the placement groove 206 of the lower mold 201. The wire harness of the workpiece is moved to the outside of the lower mold 201 through the notch of the connecting stop 208. The electric slide rail is controlled by the control panel 114 to move the placement base 101. The placement base 101 moves to the bottom of the sliding seat 102. At this time, the transmission hydraulic cylinder 112 is activated to move the sliding seat 102. The upper mold 209 set on the sliding seat 102 cooperates with the lower mold 201 to press down the placement seat 3. Then, the injection molding assembly 212 performs the injection molding operation on the injection groove 303, thereby completing the injection molding operation of the workpiece.

[0032] Then, by starting the transmission hydraulic cylinder 112, the sliding seat 102 is moved upward, causing the lower mold 201 and the upper mold 209 to separate. Then, the sliding top plate 210 is moved upward by the electric push rod, and the top column 211 at the top of the sliding top plate 210 pushes out the placement seat 3, and then the placement seat 3 is taken out, so that the next set of placement seats 3 to be processed can be placed and processed.

[0033] When the placement seat 3 is placed into the placement groove 206 for injection molding, the placement seat 3 will trigger the detection slider 401. When the placement seat 3 is positioned correctly, it will trigger the detection slider 401 to move downward. The trigger block 402 on one side of the detection slider 401 will trigger the proximity switch 403. The proximity switch 403 will send a signal to the control panel 114. Only then will the control panel 114 control the electric slide rail to move the placement base 101. Conversely, when the placement seat 3 is placed inside the placement groove 206, if none of the four detection sliders 401 are triggered, the control panel 114 will not receive a signal and will not control the electric slide rail to move the placement base 101. This prevents the placement seat 3 from shifting during placement, which could cause a decrease in injection molding accuracy.

[0034] When the mold base 2 is disassembled later, the fixing screws of the fixing clamp 115 can be removed. Then, by pulling the protective baffle 109, the protective baffle 109 will drive the fixing slider 106 to disengage from the fixing slot 203 of the fixing side block 202. At this time, the mold base 2 can be disassembled. After the mold base 2 is disassembled, the fixing side block 202 of the mold base 2 will disengage from the connecting slot 104, and the contact between the fixing side block 202 and the contact block 111 will be disengaged. The sliding of the limiting slider 110 will not be restricted by the contact block 111. The limiting slider 110 will move upward under the action of the spring. The top of the limiting slider 110 will be inserted into the limiting groove 107 of the fixing slider 106, thus restricting the sliding of the fixing slider 106 and preparing for subsequent installation.

[0035] When installing the mold base 2, the fixing side block 202 of the mold base 2 is inserted into the connecting slot 104 of the fixing shell 103. During the insertion of the fixing side block 202, the contact block 111 will be triggered to move downward. The contact block 111 will cause the top of the limiting slider 110 to disengage from the limiting groove 107 of the fixing slider 106. When all the limiting sliders 110 inside the fixing shell 103 disengage from the limiting groove 107, the sliding restriction of the fixing slider 106 will be released. The fixing slider 106 will be inserted into the fixing slot 203 by the spring to fix the mold base 2, thereby effectively reducing the phenomenon of back and forth adjustment to fix. The mold base 2 is initially fixed by inserting the fixing slider 106 into the fixing slot 203. Then, the fixing screw is inserted into the fixing clamp 115 to clamp and fix the mold base 2, thus completing the fixing operation of the mold base 2.

Claims

1. A low-bubbling LSR soft and hard rubber composite injection molding device, characterized in that, include: The device base (1) has a processing space in the middle, and a placement base (101) slides below the space, and a sliding seat (102) slides above the space; a fixing shell (103) is fixed on the left and right sides of the top surface of the placement base (101) and the left and right sides of the bottom surface of the sliding seat (102); a mold seat (2) is provided on the top surface of the placement base (101) and the bottom surface of the sliding seat (102); a connecting slot (104) is provided on the adjacent inner side of the fixing shell (103); a connecting shell (105) is fixed on the top surface of the fixing shell (103); a sliding space is provided inside the connecting shell (105), and a fixed slider (106) slides inside the space; a limit groove (107) is provided on the bottom surface of the fixed slider (106); a limit groove (107) is provided on the bottom surface of the fixing shell (103); the lower part of the fixing shell (103) is provided on the bottom surface of the fixed slider (106). A sliding limiter (110) is provided; a contact block (111) is fixed to the right end of the limiting slider (110); a lower mold (201) is fixed to the top surface of the mold base (2) on the placement base (101); four placement slots (206) are provided on the top surface of the lower mold (201); a detection shell (4) is fixed inside the placement slots (206); two fixed side blocks (202) are fixed on both the left and right sides of the mold base (2); a fixed slot (203) is provided on the outside of the fixed side block (202); a sliding space is provided inside the detection shell (4), and a detection slider (401) slides in the space; a trigger side block (402) is fixed below the outside of the detection slider (401); a proximity switch (403) is installed on the bottom surface of the detection shell (4) by a threaded connection.

2. The low-bubbling LSR soft and hard rubber composite injection molding device as described in claim 1, characterized in that: A spring is installed between the fixed slider (106) and the fixed shell (103); a protective baffle (109) is fixed in the middle of the top surface of the connecting block (108); the number of the limiting slider (110) is set to two, and a spring is installed between the limiting slider (110) and the fixed shell (103); the upper part of the contact block (111) is slidably connected to the connecting slot (104); a spring is installed between the detection slider (401) and the detection shell (4); the fixed side block (202) matches the connecting slot (104); the number of the fixed shell (103) is set to two; a connecting block (108) is fixed between the fixed sliders (106).

3. The low-bubbling LSR soft and hard rubber composite injection molding device as described in claim 1, characterized in that: A transmission hydraulic cylinder (112) is fixed on the top surface of the device base (1); the piston rod of the transmission hydraulic cylinder (112) can drive the sliding seat (102) to slide; four limiting rods (113) are fixed in the middle of the device base (1); the sliding seat (102) and the limiting rods (113) are slidably connected.

4. The low-bubbling LSR soft and hard rubber composite injection molding device as described in claim 3, characterized in that: The device base (1) has a control panel (114) fixed on the right side of the front end; the placement base (101) slides on the device base (1) via an electric slide rail; the top surface of the placement base (101) and the bottom surface of the sliding base (102) are both provided with fixing blocks (115); the fixing blocks (115) can clamp and fix the mold base (2) by fixing screws.

5. The low-bubbling LSR soft and hard rubber composite injection molding device as described in claim 1, characterized in that: The lower mold (201) has limit holes (204) at the four corners of its top surface; the lower mold (201) has a placement seat (3) fitted on its top surface; and the lower mold (201) has eight limit side blocks (205) fixed on its top surface.

6. The low-bubbling LSR soft and hard rubber composite injection molding device as described in claim 5, characterized in that: Two limiting cylinders (207) are fixed on the left and right sides of the lower mold (201); two connecting blocks (208) are fixed on the top surface of the lower mold (201), and connecting notches are provided on the left and right sides of the connecting blocks (208); an upper mold (209) is fixed on the bottom surface of the mold seat (2) set on the sliding seat (102).

7. The low-bubbling LSR soft and hard rubber composite injection molding device as described in claim 6, characterized in that: The lower mold (201) has a sliding top plate (210) at its bottom; four top posts (211) are fixed on the top surface of the sliding top plate (210); the sliding top plate (210) can move upward by an electric push cylinder; the top surface of the top post (211) is slidably connected to the placement groove (206); the upper mold (209) and the lower mold (201) have injection molding components (212) fixed at their front ends; the bottom surface of the upper mold (209) has a symmetrically fixed limit plug (213); the limit plug (213) matches the limit hole (204); the bottom surface of the upper mold (209) has a mold groove (214).

8. The low-bubbling LSR soft and hard rubber composite injection molding device as described in claim 5, characterized in that: The rear end of the placement seat (3) is connected to a rotating ejector screw (301) via a threaded connection; a limiting notch (302) is provided in the middle of the rear end of the placement seat (3); and an injection groove (303) is provided at the front end of the placement seat (3).

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