Dial switch composite molding injection mold

Abstract

The invention provides a dial switch composite molding injection mold which comprises a movable mold plate, a fixed mold plate, two lifting rods, a lifting plate and a pre-positioning mechanism, the pre-positioning mechanism comprises a touch switch, a pressure spring and a positioning pin, the fixed mold plate is provided with a limiting groove, and the pin shoulder end of the positioning pin is movably located in the limiting groove; the pin inserting end of the positioning pin penetrates out of the mold closing side of the fixed mold plate and can be inserted into a first positioning hole of the metal material strap, the compressed spring is located in the limiting groove and abuts against the position between the pin shoulder end and the groove bottom face of the limiting groove, an arc ring groove is formed in the peripheral face of the pin shoulder end in an inwards-concave mode, and a touch rod of the touch switch is inserted into the limiting groove in a telescopic moving mode. And the arc end of the touch rod can be inserted into or separated from the arc ring groove. According to the composite forming injection mold for the dial switch, full-automatic production is achieved, the pre-positioning mechanism is arranged to conduct pre-positioning operation and recognition on the metal material strap, the feeding precision of the metal material strap is ensured, and the production precision, the production quality and the production efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding production, and in particular to a DIP switch composite molding injection mold. Background Art

[0002] A DIP switch (also known as a DIP switch, toggle switch, overclocking switch, digital switch) is an address switch used for operation and control. It adopts the binary coding principle of 0 / 1 and is widely used in products that require manual programming, such as data processing, communication equipment, remote control devices, anti-theft automatic alarm systems, and air shower rooms, and has broad market application prospects.

[0003] See Figure 1 and Figure 2 , the DIP switch 10 mainly includes a first metal elastic piece 12, a second metal elastic piece 13, and a switch plastic body 11. The first metal elastic piece 12 and the second metal elastic piece 13 are respectively connected to opposite sides of the switch plastic body 11.

[0004] In order to achieve the purpose of fully automated production, Patent CN216373059U discloses a DIP switch automatic tape injection molding device. Through the design of structures such as a bridge fixing block, a vertically movable bridge, a hardware tape, a moving mold cavity, a fixed mold cavity, and a positioning pin, the vertically movable bridge is arranged at the upper end of the bridge fixing block, and a hardware tape is provided. The hardware terminals in the DIP switch pass through the vertically movable bridge. When the mold is opened, the vertically movable bridge is ejected by the ejector pin, and the hardware tape can move freely in the vertically movable bridge. After the automatic feeding is completed, the mold is locked, and the machine presses down to reset the vertically movable bridge, thereby achieving the purpose of fully automated production and being very convenient to use. In addition, through the design of a positioning tooth piece and a positioning groove, when the machine presses down to reset the vertically movable bridge, by arranging the positioning tooth piece at the upper end of the bridge fixing block and aligning the positioning groove with the positioning tooth piece, precise positioning is carried out by using the positioning tooth piece and the positioning pin to avoid errors.

[0005] However, after the automatic feeding of the hardware tape in the above DIP switch automatic tape injection molding device is completed, before the machine presses down to reset the vertically movable bridge for mold locking, there is no pre-positioning operation and identification of the hardware tape, resulting in possible deviation in the feeding of the hardware tape, that is, the feeding of the hardware tape is not accurately sent to the preset position. After that, when the machine presses down to reset the vertically movable bridge, the positioning groove on the moving mold core can still be aligned with the positioning tooth piece on the fixed mold core, but the positioning pin on the moving mold core may not necessarily correspond to the positioning hole of the hardware tape, and there is a phenomenon that the positioning pin on the moving mold core damages the hardware tape, thus affecting the production accuracy, and further affecting the production quality and production efficiency. Summary of the Invention

[0006] To achieve the main object of the present invention, the present invention provides a DIP switch composite molding injection mold with full automation and high production precision, so as to improve the production quality and further improve the production efficiency.

[0007] To achieve the main object of the present invention, the present invention provides a DIP switch composite molding injection mold, including a moving template, a fixed template, two lifting rods, a lifting plate and a pre-positioning mechanism. The moving template can move towards or away from the fixed template in the Z-axis direction. The moving die core of the moving template and the fixed die core of the fixed template can form an injection cavity. The metal strip is movably located between the moving template and the fixed template in the X-axis direction, and the first metal elastic piece and the second metal elastic piece of the metal strip are respectively inserted into the injection cavity. The lifting plate is movably arranged on the side of the fixed template away from the moving template in the Z-axis direction. The two lifting rods are symmetrically arranged about the injection cavity in the Y-axis direction, and the first end of the lifting rod is connected to the lifting plate. The second end of the lifting rod passes through the mold closing side of the fixed template close to the moving template. A chute is opened through the outer peripheral surface of the injection cavity in the X-axis direction at the second end of the lifting rod close to the injection cavity. The relative two ends of the metal strip in the Y-axis direction are respectively inserted into the two chutes. The pre-positioning mechanism includes a touch switch, a compression spring and a positioning pin. The fixed template is provided with a limit groove. The shoulder end of the positioning pin can move in the Z-axis direction and is located in the limit groove. The inserted end of the positioning pin passes through the mold closing side of the fixed template and can be inserted into the first positioning hole of the metal strip. The compression spring is located in the limit groove and abuts between the shoulder end and the bottom surface of the limit groove. An arc-shaped ring groove is recessed in the outer peripheral surface of the shoulder end. The touch switch is arranged on the fixed template, and the touch rod of the touch switch can be telescopically moved and inserted into the limit groove so that the arc end of the touch rod can be inserted into or separated from the arc-shaped ring groove.

[0008] It can be seen from the above scheme that in the injection molding production process of the DIP switch composite molding injection mold of the present invention, the metal strip located between the movable template and the fixed template is moved and fed in the X-axis direction to the predetermined injection molding position. Since the opposite ends of the metal strip in the Y-axis direction are respectively inserted in the slide grooves of the two lifting rods, the slide grooves of the lifting rods play a limiting and guiding role for the metal strip, so that the metal strip is stably and reliably moved and fed along the X-axis direction. Subsequently, the lifting plate is controlled to reset and move away from the movable template in the Z-axis direction. At the same time, the lifting rods arranged on the lifting plate synchronously drive the metal strip to move away from the movable template in the Z-axis direction under the pulling action of their slide grooves, so that the metal strip is supported on the fixed mold core of the fixed template. At this time, under the action of the elastic force of the compression spring of the pre-positioning mechanism, the positioning The pin plug end of the pin can be inserted into the first positioning hole of the metal strip supported on the fixed mold core, so that the trigger rod of the touch switch can be extended and moved into the limit groove of the fixed mold plate, so that the arc end of the trigger rod is inserted into the arc ring groove of the positioning pin, and the touch switch can recognize that the metal strip is correctly fed to the predetermined injection molding position. Then, the movable mold plate is controlled to move toward the fixed mold plate in the Z-axis direction to the mold closing state, so that an injection molding cavity is formed between the movable mold core of the movable mold plate and the fixed mold core of the fixed mold plate. After that, the switch plastic body of the dial switch is injection molded into the injection molding cavity. Since the first metal spring sheet and the second metal spring sheet of the metal strip are respectively inserted into the injection molding cavity, the injection molded switch plastic body can be connected to the first metal spring sheet and the second metal spring sheet respectively, as shown in the figure.

[0009] In addition, once the feeding of the metal strip deviates from the predetermined injection molding position, the pin plug end of the locating pin and the first locating hole of the metal strip cannot be aligned in the Z-axis direction, so that under the pulling action of the slide groove of the lifting rod, the metal strip is driven to move away from the movable template in the Z-axis direction so that the metal strip is supported on the fixed mold core of the fixed template. In this process, the metal strip will press against the pin plug end of the locating pin to force the locating pin to move away from the movable template in the Z-axis direction, thereby forcing the arc end of the trigger rod of the touch switch to disengage from the arc ring groove of the locating pin, and forcing the trigger rod of the touch switch to retract and move, so that the touch switch can recognize that the metal strip is not correctly fed to the predetermined injection molding position, and then an alarm will be issued to remind and suspend the control of the movable template clamping operation to avoid damage to the metal strip caused by the movable template clamping operation.

[0010] After the injection molding of the DIP switch composite molding injection mold of the present invention is completed, first control the moving template to move away from the fixed template in the Z-axis direction to the mold opening state, and then control the lifting plate to move closer to the moving template in the Z-axis direction. At the same time, the lifting rod arranged on the lifting plate drives the metal strip to move closer to the moving template in the Z-axis direction under the pulling action of its chute, so that the metal strip synchronously drives the injection-molded switch plastic body to move away from the fixed mold core of the fixed template. When the metal strip and the injection-molded switch plastic body are driven by the pulling action of the chute of the lifting rod to move away from the fixed mold core of the fixed template to the preset feeding position, the first positioning hole of the metal strip has also disengaged from the pin insertion end of the positioning pin, so that the metal strip can move and feed in the X-axis direction for the injection molding production of the next station.

[0011] Therefore, the DIP switch composite molding injection mold of the present invention realizes the purpose of fully automated production, and a pre-positioning mechanism is set to perform pre-positioning operation and identification on the metal strip to ensure the accuracy of the metal strip feeding, so as to improve the production accuracy, thereby improving the production quality and further improving the production efficiency.

[0012] A further solution is that the DIP switch composite molding injection mold further includes two guide plates and two linkage rods. The two guide plates are respectively located at both ends of the fixed mold core in the X-axis direction, and each guide plate is provided with a limiting channel penetrating in the X-axis direction. The metal strip can movably pass through the two limiting channels in the X-axis direction. The first end of a linkage rod is connected to the lifting plate, and the second end of a linkage rod passes through the mold closing side of the fixed template and is connected to a guide plate.

[0013] A further solution is that the number of pre-positioning mechanisms is two. One pre-positioning mechanism is arranged on the feeding and discharging side of a guide plate away from the fixed mold core in the X-axis direction, and the pin insertion end of the positioning pin passes through the mold closing side of the fixed template and the guide plate in sequence and can be inserted into the first positioning hole of the metal strip.

[0014] A further solution is that the first opening of the chute in the X-axis direction is arranged in an outward-expanded V shape; and / or, the second opening of the chute in the X-axis direction is arranged in an outward-expanded V shape.

[0015] A further solution is that the injection cavity includes a connected main body cavity, a first runner cavity and a second runner cavity. The first runner cavity is connected to the glue inlet channel of the moving template, and the first runner cavity extends in a long strip shape and is connected to the first side frame of the metal strip. The second runner cavity extends in a long strip shape and is connected to the second side frame of the metal strip. The first runner cavity and the second runner cavity are arranged opposite to each other in the Y-axis direction, and the first metal elastic sheet and the second metal elastic sheet are arranged opposite to each other in the X-axis direction.

[0016] A further solution is that the DIP switch composite molding injection mold further includes ejector rods, an ejector pin plate, and springs. The ejector pin plate is movably arranged on the side of the lifting plate away from the fixed mold plate in the Z-axis direction. The mounting end of the ejector rod is connected to the ejector pin plate. The ejecting end of the ejector rod sequentially passes through the lifting plate, the fixed mold plate, and the fixed mold core and is connected to the main cavity of the body. The spring abuts between the fixed mold plate and the ejector pin plate.

[0017] A further solution is that the number of the first metal elastic pieces and the second metal elastic pieces is multiple. One first metal elastic piece is arranged opposite to one second metal elastic piece in the X-axis direction. The number of the ejector rods is multiple. One ejector rod is correspondingly arranged with one first metal elastic piece in the X-axis direction and is located in the middle between the first metal elastic piece and the second metal elastic piece. And / or, on the mold closing side of the fixed mold core, multiple first positioning platforms and multiple second positioning platforms are convexly arranged. One first positioning platform can be inserted into the first gap between two adjacent first metal elastic pieces, and one second positioning platform can be inserted into the second gap between two adjacent second metal elastic pieces.

[0018] A further solution is that the DIP switch composite molding injection mold further includes a first positioning pin. The mounting end of the first positioning pin is connected to the moving mold plate. The positioning end of the first positioning pin extends in the Z-axis direction through the moving mold core and can be inserted into the second positioning hole of the metal strip. And / or, the DIP switch composite molding injection mold further includes a second positioning pin. The mounting end of the second positioning pin is connected to the fixed mold plate. The positioning end of the second positioning pin extends in the Z-axis direction through the fixed mold core and can be inserted into the third positioning hole of the metal strip.

[0019] A further solution is that the DIP switch composite molding injection mold further includes a first positioning rod. The mounting end of the first positioning rod is connected to the moving mold plate. The positioning end of the first positioning rod extends in the Z-axis direction and protrudes from the moving mold plate. A first positioning groove is formed on the mold closing side of the fixed mold plate. The positioning end of the first positioning rod can be inserted into the first positioning groove. And / or, the DIP switch composite molding injection mold further includes a second positioning rod. The mounting end of the second positioning rod is connected to the fixed mold plate. The positioning end of the second positioning rod extends in the Z-axis direction and protrudes from the fixed mold plate. A second positioning groove is formed on the mold closing side of the moving mold plate. The positioning end of the second positioning rod can be inserted into the second positioning groove.

[0020] A further solution is that the DIP switch composite molding injection mold further includes a guide rod. The mounting end of the guide rod is connected to the moving mold plate. The guiding end of the guide rod protrudes from the moving mold plate. A guiding hole is formed through the fixed mold plate in the Z-axis direction. The guiding hole can be slidably sleeved on the guiding end of the guide rod. Description of the Drawings

[0021] Figure 1 is the structural diagram of the DIP switch.

[0022] Figure 2It is an exploded view of the DIP switch.

[0023] Figure 3 It is a structural diagram of the first perspective of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0024] Figure 4 It is a structural diagram of the second perspective of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0025] Figure 5 It is a structural diagram of the moving mold side of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0026] Figure 6 It is a structural diagram of the fixed mold side of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0027] Figure 7 It is a first perspective sectional view of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0028] Figure 8 It is a second perspective sectional view of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0029] Figure 9 It is a third perspective sectional view of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0030] Figure 10 It is a fourth perspective sectional view of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0031] Figure 11 It is Figure 10 An enlarged view at A.

[0032] Figure 12 It is a fifth perspective sectional view of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0033] Figure 13 It is a sixth perspective sectional view of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0034] Figure 14 It is Figure 13 An enlarged view at B.

[0035] Figure 15 It is a seventh perspective sectional view of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0036] Figure 16 It is Figure 15 An enlarged view at C.

[0037] Figure 17 It is a partial structural diagram of the lifting rod in the embodiment of the DIP switch composite molding injection mold of the present invention.

[0038] Figure 18 It is the eighth perspective cross-sectional view of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0039] Figure 19 It is the ninth perspective cross-sectional view of the embodiment of the DIP switch composite molding injection mold of the present invention.

[0040] Figure 20 is Figure 19 The enlarged view at D.

[0041] Figure 21 It is the schematic diagram of the product produced by the embodiment of the DIP switch composite molding injection mold of the present invention.

[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Specific embodiments

[0043] See Figures 3 to 20, this embodiment discloses a combined forming injection mold 20 for a DIP switch, which includes a moving template 21 and a fixed template 22. The moving template 21 can move towards or away from the fixed template 22 in the Z-axis direction. The moving mold core 211 of the moving template 21 and the fixed mold core 221 of the fixed template 22 can form an injection cavity 27. The metal strip 30 is movably located between the moving template 21 and the fixed template 22 in the X-axis direction, and the first metal elastic piece 12 and the second metal elastic piece 13 of the metal strip 30 are respectively inserted into the injection cavity 27. Among them, the combined forming injection mold 20 for a DIP switch in this embodiment further includes two lifting rods 225, a lifting plate 23 and a pre-positioning mechanism. The lifting plate 23 is movably arranged on the side of the fixed template 22 away from the moving template 21 in the Z-axis direction. The two lifting rods 225 are symmetrically arranged about the injection cavity 27 in the Y-axis direction. The first end of the lifting rod 225 is connected to the lifting plate 23, and the second end of the lifting rod 225 passes through the mold closing side of the fixed template 22 close to the moving template 21. A chute 2251 is axially penetrated through the outer peripheral surface of the second end of the lifting rod 225 close to the injection cavity 27 in the X-axis direction. The opposite ends of the metal strip 30 in the Y-axis direction are respectively inserted into the two chutes 2251. Moreover, the pre-positioning mechanism in this embodiment includes a touch switch 25, a compression spring 252 and a positioning pin 251. The fixed template 22 is provided with a limiting groove 229. The shoulder end of the positioning pin 251 is movably located in the limiting groove 229 in the Z-axis direction. The inserted end 2511 of the positioning pin 251 passes through the mold closing side of the fixed template 22 and can be inserted into the first positioning hole 301 of the metal strip 30. The compression spring 252 is located in the limiting groove 229 and abuts between the shoulder end of the positioning pin 251 and the bottom surface of the limiting groove 229. An arc-shaped ring groove 2512 is concavely opened on the outer peripheral surface of the shoulder end of the positioning pin 251. The touch switch 25 is arranged on the fixed template 22, and the touch rod 253 of the touch switch 25 can be telescopically inserted into the limiting groove 229 so that the arc end of the touch rod 253 can be inserted into or disengaged from the arc-shaped ring groove 2512.

[0044] During the injection molding production process of the injection mold 20 for composite molding of the code switch of the present embodiment, the metal strip 30 located between the movable template 21 and the fixed template 22 is moved and fed to the predetermined injection molding position in the X-axis direction. Since the opposite ends of the metal strip 30 in the Y-axis direction are respectively arranged in the slide grooves 2251 of the two lifting rods 225, the slide grooves 2251 of the lifting rods 225 play a limiting and guiding role for the metal strip 30, so that the metal strip 30 is stably and reliably moved and fed along the X-axis direction. Subsequently, the lifting plate 23 is controlled to reset and move away from the movable template 21 in the Z-axis direction. At the same time, the lifting rod 225 arranged on the lifting plate 23 synchronously drives the metal strip 30 to move away from the movable template 21 in the Z-axis direction under the pulling action of its slide groove 2251, so that the metal strip 30 is supported on the fixed mold core 221 of the fixed template 22. At this time, under the elastic force of the compression spring 252 of the pre-positioning mechanism, the pin plug end 2251 of the positioning pin 251 is 511 can be inserted into the first positioning hole 301 of the metal strip 30 supported on the fixed mold core 221, so that the trigger rod 253 of the touch switch 25 can be extended and moved to be inserted into the limit groove 229 of the fixed mold plate 22, so that the arc end of the trigger rod 253 is inserted into the arc ring groove 2512 of the positioning pin 251, and the touch switch 25 can recognize that the metal strip 30 is correctly fed to the predetermined injection molding position, and then the movable mold plate 21 is controlled to move toward the fixed mold plate 22 in the Z-axis direction to the mold closing state, so that an injection molding cavity 27 is formed between the movable mold core 211 of the movable mold plate 21 and the fixed mold core 221 of the fixed mold plate 22, and then, the switch plastic body of the dial switch is injection molded into the injection molding cavity 27. Since the first metal spring sheet 12 and the second metal spring sheet 13 of the metal strip 30 are respectively inserted into the injection molding cavity 27, the injection molded switch plastic body can be connected to the first metal spring sheet 12 and the second metal spring sheet 13 respectively, as shown in FIG. Figure 21 shown.

[0045] In addition, once the feeding of the metal strip 30 deviates from the predetermined injection molding position, the pin plug end 2511 of the positioning pin 251 and the first positioning hole 301 of the metal strip 30 cannot be aligned in the Z-axis direction, so that the metal strip 30 is driven to move away from the movable mold plate 21 in the Z-axis direction under the pulling action of the slide groove 2251 of the lifting rod 225 so that the metal strip 30 is supported on the fixed mold core 221 of the fixed mold plate 22. In the process, the metal strip 30 will press against the pin plug end 2511 of the positioning pin 251 , so as to force the positioning pin 251 to move away from the movable template 21 in the Z-axis direction, thereby forcing the arc end of the trigger rod 253 of the touch switch 25 to disengage from the arc ring groove 2512 of the positioning pin 251, and forcing the trigger rod 253 of the touch switch 25 to retract and move, so that the touch switch 25 can recognize that the metal strip 30 is not correctly fed to the predetermined injection molding position, and then an alarm is issued and the control of the clamping operation of the movable template 21 is suspended to avoid damage to the metal strip 30 caused by the clamping operation of the movable template 21.

[0046] After the injection molding of the DIP switch composite molding injection mold 20 in this embodiment is completed, first control the moving template 21 to move away from the fixed template 22 in the Z-axis direction to the mold opening state. Subsequently, control the lifting plate 23 to move closer to the moving template 21 in the Z-axis direction. At the same time, the lifting rod 225 provided on the lifting plate 23 drives the metal strip 30 to move closer to the moving template 21 in the Z-axis direction under the pulling action of its chute 2251, so that the metal strip 30 drives the injection-molded switch plastic body to move away from the fixed mold core 221 of the fixed template 22 synchronously. When the metal strip 30 and the injection-molded switch plastic body are driven by the pulling action of the chute 2251 of the lifting rod 225 to move away from the fixed mold core 221 of the fixed template 22 to the preset feeding position, the first positioning hole 301 of the metal strip 30 has also disengaged from the pin insertion end 2511 of the positioning pin 251. Thus, the metal strip 30 can move and feed in the X-axis direction for the injection molding production of the next station.

[0047] Therefore, the DIP switch composite molding injection mold 20 in this embodiment realizes the purpose of fully automated production, and a pre-positioning mechanism is set to perform pre-positioning operation and identification on the metal strip 30 to ensure the feeding accuracy of the metal strip 30, so as to improve the production accuracy, thereby improving the production quality and further improving the production efficiency.

[0048] Combined Figure 6 、 Figure 8 and Figure 10 In this embodiment, the DIP switch composite molding injection mold 20 further includes two guide plates 26 and two linkage rods 262. The two guide plates 26 are respectively located at both ends of the fixed mold core 221 in the X-axis direction, and each guide plate 26 is provided with a limiting channel 261 penetrating in the X-axis direction. The metal strip 30 is movably passed through the two limiting channels 261 in the X-axis direction. The first end of a linkage rod 262 is connected to the lifting plate 23, and the second end of a linkage rod 262 passes through the mold closing side of the fixed template 22 and is connected to a guide plate 26. Thus, when the lifting plate 23 drives the lifting rod 225 to drive the metal strip 30 to move in the Z-axis direction, the lifting plate 23 simultaneously drives the guide plate 26 through the linkage rod 262 to drive the metal strip 30 to move in the Z-axis direction, so that the metal strip 30 moves smoothly in the Z-axis direction as a whole, further improving the feeding stability and accuracy of the metal strip 30.

[0049] Specifically, the number of pre-positioning mechanisms in this embodiment is two. One pre-positioning mechanism is arranged on the feeding and discharging side of a material guiding plate 26 away from the fixed mold core 221 in the X-axis direction, and the pin insertion end 2511 of the positioning pin 251 sequentially passes through the mold closing side of the fixed template 22 and the material guiding plate 26 and can be inserted into the first positioning hole 301 of the metal strip 30, thereby further improving the feeding stability and accuracy of the metal strip 30.

[0050] Combined with Figures 13 to 17 , the first opening 22511 of the chute 2251 in this embodiment is arranged in an outward-expanded V shape in the X-axis direction, and the second opening 22512 of the chute 2251 in this embodiment is arranged in an outward-expanded V shape in the X-axis direction, so that the material guiding plate 26 can quickly enter the chute 2251 and move smoothly and stably in the chute 2251 for feeding.

[0051] Combined with Figure 18 and Figure 21 , the injection molding cavity 27 in this embodiment includes a connected main body cavity 271, a first runner cavity 272 and a second runner cavity 273. The first runner cavity 272 is connected to the glue inlet channel 215 of the moving template 21, and the first runner cavity 272 extends in a long strip shape and is connected to the first side frame of the metal strip 30. The second runner cavity 273 extends in a long strip shape and is connected to the second side frame of the metal strip 30. The first runner cavity 272 and the second runner cavity 273 are arranged opposite to each other in the Y-axis direction, and the first metal elastic sheet 12 and the second metal elastic sheet 13 are arranged opposite to each other in the X-axis direction. Thus, the main body cavity 271 injection-molds the switch plastic body 11, the first runner cavity 272 injection-molds the first support arm 31, and the second runner cavity 273 injection-molds the second support arm 32, so that the switch plastic body 11 is supported on the frame of the metal strip 30 through the first support arm 31 and the second support arm 32 in the Y-axis direction, avoiding the deformation of the switch plastic body 11 during demolding due to the elastic deformation ability of the metal elastic sheet and the small size of the switch plastic body 11, thereby improving the production accuracy and production quality.

[0052] To ensure the demolding quality, the DIP switch composite molding injection mold 20 of this embodiment further includes ejector rods 28, an ejector pin plate 24, and springs 241. The ejector pin plate 24 is movably arranged on the side of the lifting plate 23 away from the fixed mold plate 22 in the Z-axis direction. The mounting end of the ejector rod 28 is connected to the ejector pin plate 24. The ejecting end of the ejector rod 28 sequentially passes through the lifting plate 23, the fixed mold plate 22, and the fixed mold core 221 and is connected to the main body cavity 271. The spring 241 abuts between the fixed mold plate 22 and the ejector pin plate 24. Thus, while the lifting plate 23 moves toward the fixed mold plate 22 in the Z-axis direction to perform demolding operation on the injection-molded metal strip 30, the ejector pin plate 24 is controlled to move toward the fixed mold plate 22 in the Z-axis direction to drive the ejecting end of the ejector rod 28 to eject the switch plastic body 11 formed in the main body cavity 271 for demolding, so as to ensure the smooth demolding of the switch plastic body 11 and improve the production precision and quality. When the demolding operation is completed, the power controlling the ejector pin plate 24 is cancelled. Then, under the action of the elastic restoring force of the spring 241, the ejector pin plate 24 is forced to drive the ejector rod 28 to move away from the metal strip 30 for resetting. Subsequently, the metal strip 30 can be fed and moved.

[0053] Furthermore, the numbers of the first metal elastic pieces 12 and the second metal elastic pieces 13 in this embodiment are both multiple. One first metal elastic piece 12 is arranged opposite to one second metal elastic piece 13 in the X-axis direction. Then, the number of the ejector rods 28 in this embodiment is multiple. One ejector rod 28 is correspondingly arranged with one first metal elastic piece 12 in the X-axis direction and is located in the middle between the first metal elastic piece 12 and the second metal elastic piece 13, so as to avoid the deformation of a certain metal elastic piece during the demolding process, and further improve the production precision and quality. Moreover, on the mold closing side of the fixed mold core 221 in this embodiment, a plurality of first positioning platforms 226 and a plurality of second positioning platforms 227 are convexly arranged in the Z-axis direction. One first positioning platform 226 can be inserted into the first gap between two adjacent first metal elastic pieces 12, and one second positioning platform 227 can be inserted into the second gap between two adjacent second metal elastic pieces 13 to position the metal elastic pieces, further improving the production precision and quality.

[0054] To further improve the production precision and quality, the DIP switch composite molding injection mold 20 of this embodiment further includes a first positioning pin 214. The mounting end of the first positioning pin 214 is connected to the moving mold plate 21. The positioning end of the first positioning pin 214 extends through the moving mold core 211 in the Z-axis direction and can be inserted into the second positioning hole 302 of the metal strip 30 to accurately position the metal strip 30. Moreover, the DIP switch composite molding injection mold 20 of this embodiment further includes a second positioning pin 224. The mounting end of the second positioning pin 224 is connected to the fixed mold plate 22. The positioning end of the second positioning pin 224 extends through the fixed mold core 221 in the Z-axis direction and can be inserted into the third positioning hole 303 of the metal strip 30 to accurately position the metal strip 30.

[0055] In order to further improve the production precision and production quality, the DIP switch composite molding injection mold 20 of this embodiment further includes a first positioning rod 213. The installation end of the first positioning rod 213 is connected to the moving template 21. The positioning end of the first positioning rod 213 extends in the Z-axis direction and protrudes from the moving template 21. A first positioning groove 223 is formed on the mold closing side of the fixed template 22. The positioning end of the first positioning rod 213 can be inserted into the first positioning groove 223 to accurately position the moving template 21 and the fixed template 22 during the mold closing process. Moreover, the DIP switch composite molding injection mold 20 of this embodiment further includes a second positioning rod 228. The installation end of the second positioning rod 228 is connected to the fixed template 22. The positioning end of the second positioning rod 228 extends in the Z-axis direction and protrudes from the fixed template 22. A second positioning groove 215 is formed on the mold closing side of the moving template 21. The positioning end of the second positioning rod 228 can be inserted into the second positioning groove 215 to accurately position the moving template 21 and the fixed template 22 during the mold closing process.

[0056] In order to further improve the production precision and production quality, the DIP switch composite molding injection mold 20 of this embodiment further includes a guide rod 29. The installation end of the guide rod 29 is connected to the moving template 21. The guiding end of the guide rod 29 protrudes from the moving template 21. The fixed template 22 is provided with a guiding hole 291 penetrating in the Z-axis direction. The guiding hole 291 can be slidably sleeved on the guiding end of the guide rod 29. Thus, the guide rod 29 is provided to accurately guide the moving template 21 and the fixed template 22 to perform the mold opening and closing operations.

[0057] The above embodiments are only preferred examples of the present invention, and are not intended to limit the scope of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles of the scope of the present invention application for patent shall be included within the scope of the present invention patent application.

Claims

1. A composite molding injection mold for a code switch, comprising a movable mold plate and a fixed mold plate, wherein the movable mold plate can move toward or away from the fixed mold plate in the Z-axis direction, the movable mold core of the movable mold plate and the fixed mold core of the fixed mold plate can form an injection cavity, a metal strip is movably located between the movable mold plate and the fixed mold plate in the X-axis direction, and a first metal spring sheet and a second metal spring sheet of the metal strip are respectively inserted into the injection cavity, characterized in that: The composite molding injection mold of the code switch further comprises two lifting rods, a lifting plate and a pre-positioning mechanism, wherein the lifting plate can be movably arranged on a side of the fixed template away from the movable template in the Z-axis direction, the two lifting rods are symmetrically arranged about the injection cavity in the Y-axis direction, and the first end of the lifting rod is connected to the lifting plate, the second end of the lifting rod passes through the mold closing side of the fixed template close to the movable template, the second end of the lifting rod is close to the outer peripheral surface of the injection cavity and is provided with a slide groove in the X-axis direction, and the opposite ends of the metal strip in the Y-axis direction are respectively passed through the two slide grooves; The pre-positioning mechanism includes a touch switch, a compression spring and a positioning pin. The fixed template is provided with a limiting groove. The pin shoulder end of the positioning pin can be movably located in the limiting groove in the Z-axis direction. The pin insertion end of the positioning pin passes through the mold closing side of the fixed template and can be inserted into the first positioning hole of the metal strip. The compression spring is located in the limiting groove and abuts between the pin shoulder end and the bottom surface of the limiting groove. The outer peripheral surface of the pin shoulder end is concavely provided with an arc ring groove. The touch switch is arranged on the fixed template, and the touch rod of the touch switch can be telescopically and movably inserted into the limiting groove, so that the arc end of the touch rod can be inserted into or out of the arc ring groove.

2. The composite molding injection mold for a DIP switch according to claim 1, characterized in that: The composite molding injection mold of the code switch also includes two guide plates and two linkage rods. The two guide plates are respectively located at the two ends of the fixed mold core in the X-axis direction, and each of the guide plates is penetrated by a limit channel in the X-axis direction. The metal strip can movably pass through the two limit channels in the X-axis direction. The first end of one linkage rod is connected to the lifting plate, and the second end of one linkage rod passes through the mold closing side of the fixed mold plate and is connected to one guide plate.

3. The composite molding injection mold for a DIP switch according to claim 2, characterized in that: There are two pre-positioning mechanisms, one of which is arranged on the material feeding and discharging side of a material guide plate away from the fixed mold core in the X-axis direction, and the pin insertion end of the positioning pin successively passes through the clamping side of the fixed mold plate and the material guide plate and can be inserted into the first positioning hole of the metal strip.

4. The composite molding injection mold for a DIP switch according to claim 1, characterized in that: The first opening of the slide groove in the X-axis direction is arranged in an outwardly expanding V-shape; And / or, the second opening of the slide groove in the X-axis direction is arranged in an outwardly expanding V-shape.

5. The composite molding injection mold for a DIP switch according to claim 1, characterized in that: The injection mold cavity comprises a main body cavity, a first runner cavity and a second runner cavity which are connected to each other. The first runner cavity is connected to the glue inlet channel of the movable mold plate, and the first runner cavity extends in a long strip shape and is connected to the first side frame of the metal strip. The second runner cavity extends in a long strip shape and is connected to the second side frame of the metal strip. The first flow channel cavity and the second flow channel cavity are arranged opposite to each other in the Y-axis direction, and the first metal spring sheet and the second metal spring sheet are arranged opposite to each other in the X-axis direction.

6. The composite molding injection mold for a DIP switch according to claim 5, characterized in that: The composite molding injection mold of the code switch also includes an ejector rod, an ejector plate and a spring. The ejector plate can be movably arranged on the side of the lifting plate away from the fixed mold plate in the Z-axis direction. The mounting end of the ejector rod is connected to the ejector plate. The ejection end of the ejector rod passes through the lifting plate, the fixed mold plate and the fixed mold core in sequence and is connected to the main cavity of the body. The spring abuts between the fixed mold plate and the ejector plate.

7. The composite molding injection mold for a DIP switch according to claim 6, characterized in that: The number of the first metal spring sheet and the number of the second metal spring sheet are both multiple, and one of the first metal spring sheets is arranged opposite to one of the second metal spring sheets in the X-axis direction; There are multiple push rods, one of which is arranged corresponding to one of the first metal springs in the X-axis direction and is located in the middle between the first metal spring and the second metal spring; And / or, the clamping side of the fixed mold core is protruding in the Z-axis direction with multiple first positioning platforms and multiple second positioning platforms, one of the first positioning platforms can be inserted into the first gap between two adjacent first metal springs, and one of the second positioning platforms can be inserted into the second gap between two adjacent second metal springs.

8. The composite molding injection mold for a DIP switch according to claim 1, characterized in that: The DIP switch composite molding injection mold further includes a first positioning pin, the mounting end of the first positioning pin is connected to the movable mold plate, and the positioning end of the first positioning pin extends in the Z-axis direction to pass through the movable mold core and can be inserted into the second positioning hole of the metal strip; And / or, the composite molding injection mold of the code switch also includes a second positioning pin, the mounting end of the second positioning pin is connected to the fixed mold plate, and the positioning end of the second positioning pin extends in the Z-axis direction to pass through the fixed mold core and can be inserted into the third positioning hole of the metal strip.

9. The composite molding injection mold for a DIP switch according to claim 1, characterized in that: The DIP switch composite molding injection mold further includes a first positioning rod, the mounting end of the first positioning rod is connected to the movable platen, the positioning end of the first positioning rod extends in the Z-axis direction and protrudes from the movable platen, and a first positioning groove is provided on the mold closing side of the fixed platen, and the positioning end of the first positioning rod can be inserted into the first positioning groove; And / or, the composite molding injection mold of the code switch also includes a second positioning rod, the mounting end of the second positioning rod is connected to the fixed template, the positioning end of the second positioning rod extends in the Z-axis direction and protrudes from the fixed template, and a second positioning groove is provided on the clamping side of the movable template, and the positioning end of the second positioning rod can be inserted into the second positioning groove.

10. The composite molding injection mold for a DIP switch according to any one of claims 1 to 9, characterized in that: The composite molding injection mold of the code switch also includes a guide rod, the mounting end of the guide rod is connected to the movable template, the guide end of the guide rod protrudes from the movable template, and the fixed template is provided with a guide hole extending through the Z-axis direction, and the guide hole can be slidably mounted on the guide end of the guide rod.

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