A mechanism for resistance press-fitting injection molded parts containing hardware

Abstract

The present invention discloses a mechanism for resistance press-fitting an injection molded part containing a hardware component, comprising: a base, a conveyor line, a fixing plate, a resistance press-fitting punch, an injection molded part carrier, a support plate, a floating frame, and a clamping and positioning assembly. A first lifting drive device located below the fixing plate is provided in the base or the conveyor line. The support plate is arranged at the top of the first lifting drive device. The floating frame is arranged below the support plate. A connecting rod is arranged between the support plate and the floating frame. The clamping and positioning assemblies are distributed on both sides of the support plate. The resistance press-fitting punch is vertically arranged on the fixing plate and corresponds to the hardware component on the injection molded part. By the above method, the mechanism for resistance press-fitting an injection molded part containing a hardware component according to the present invention ensures the connection strength between the resistance teeth and the resistance end wire, avoids the loosening problem, and the contact between the resistance teeth and the resistance end wire is closer, which is beneficial to improving the stability of the resistance value.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding part production, and particularly to a mechanism for resistance press-fitting of injection molding parts containing hardware parts. Background Art

[0002] In injection molding parts containing hardware parts, according to the functional requirements of the product, resistors need to be assembled at the required positions to meet the usage requirements.

[0003] The connection between the hardware part and the resistor can be achieved by welding, where the wires at both ends of the resistor are respectively welded at the specified positions on the hardware part. However, the operation is cumbersome and the cost is high. It is also possible to design tooth-shaped card slots on the hardware part and snap the wires at both ends of the resistor into the corresponding card slots. However, the contact area between the wire and the card slot is limited, resulting in poor position stability of the resistor, and the contact area uniformity between the wire and the card slot is poor, resulting in unstable resistance values and unable to meet the long-term quality requirements of mass production. Summary of the Invention

[0004] The main technical problem to be solved by the present invention is to provide a mechanism for resistance press-fitting of injection molding parts containing hardware parts, realizing the press-fitting of resistors on injection molding parts, improving the connection strength between the hardware part and the end wire of the resistor, and ensuring the stability of the conductive contact area and the resistance value.

[0005] To solve the above technical problems, a technical solution adopted by the present invention is to provide a mechanism for resistance press-fitting an injection molded part containing a hardware part, including: a base, a conveyor line, a fixing plate, a resistance press-fitting punch, an injection molded part carrier, a support plate, a floating frame, and a clamping and positioning assembly. The conveyor line passes above the base. Guide columns are provided on both sides of the conveyor line on the base. The fixing plate is arranged at the top of the guide columns and above the conveyor line. The injection molded part carrier is arranged on the conveyor line. A first lifting drive device is arranged below the fixing plate in the base or the conveyor line. The support plate is arranged on the top of the first lifting drive device. The floating frame is arranged below the support plate. A connecting rod is arranged between the support plate and the floating frame. The clamping and positioning assemblies are distributed on both sides of the support plate. Each clamping and positioning assembly respectively includes a first floating block, a second floating block, a top rod, a floating plate, a drive plate, a sliding seat, and an insertion block. The first floating block is vertically movably arranged on the guide column and connected to the floating frame. The top rod is vertically arranged on the first floating block. The floating plate is arranged on the top of the top rod. The second floating block is vertically movably arranged on the guide column and above the floating plate. The sliding seat is horizontally movably arranged on the second floating block. The drive plate is vertically arranged on the floating plate and penetrates upward through the sliding seat. An inclined chute extending downward and inward is arranged in the drive plate. A passive rod penetrating the chute is arranged in the sliding seat. The insertion block is arranged at the inner end of the sliding seat. Sockets corresponding to the insertion blocks one by one are arranged on both sides of the injection molded part carrier. The resistance press-fitting punch is vertically arranged on the fixing plate and corresponds to the hardware part on the injection molded part.

[0006] In a preferred embodiment of the present invention, the conveyor line adopts a belt conveyor line or a chain conveyor line.

[0007] In a preferred embodiment of the present invention, a blocking mechanism is arranged in the base or the conveyor line. The blocking mechanism includes a second lifting drive device and a blocking member. The blocking member is arranged on the top of the second lifting drive device and on the path of the injection molded part carrier.

[0008] In a preferred embodiment of the present invention, the first lifting drive device and the second lifting drive device respectively adopt air cylinders. The blocking member includes a travel switch.

[0009] In a preferred embodiment of the present invention, a slide rail is arranged below the sliding seat on the second floating block.

[0010] In a preferred embodiment of the present invention, several positioning pins corresponding to the injection molded part are arranged on the injection molded part carrier.

[0011] In a preferred embodiment of the present invention, resistance teeth for positioning the two ends of the resistance are arranged on the hardware part. An extrusion groove corresponding to the end wire of the resistance is concavely arranged on the resistance teeth.

[0012] In a preferred embodiment of the present invention, two pressure rods are spaced at the bottom of the resistance press-fitting punch, and a V-shaped groove covering the corresponding resistance teeth is concavely arranged at the bottom of the pressure rod.

[0013] In a preferred embodiment of the present invention, fixing seats corresponding to the resistance press-fitting punches one by one are arranged on the fixing plate. A slot corresponding to the upper part of the resistance press-fitting punch is concavely arranged at the bottom of the fixing seat. The upper part of the resistance press-fitting punch is arranged in the slot. A first threaded hole pointing downward to the top end of the resistance press-fitting punch is arranged at the top of the fixing seat, and a second threaded hole pointing to the side of the resistance press-fitting punch is arranged on the side of the fixing seat. Screws are respectively arranged in the first threaded hole and the second threaded hole.

[0014] In a preferred embodiment of the present invention, through holes corresponding to the guide posts are respectively arranged in the first floating block and the second floating block. A linkage sleeve sleeved on the guide post and pointing upward to the second floating block is arranged on the first floating block. A frame body is arranged at the bottom of the second floating block. The floating plate is located in the frame body. A first spring sleeved on the ejector rod and located between the bottom of the frame body and the floating plate is arranged. A screw that extends downward and is connected to the second floating block is liftably arranged on the fixing plate. A second spring sleeved on the screw and located between the fixing plate and the second floating block is arranged.

[0015] The beneficial effects of the present invention are as follows: An institution for resistance press-fitting of injection molded parts containing hardware parts pointed out by the present invention places the resistance at the specified position of the hardware part, and tightly cooperates with the wire at the end of the resistance through the squeezing groove on the resistance teeth to realize the clamping and positioning of the wire after being squeezed into the squeezing groove. Then, the injection molded part on the injection molded part carrier is sent to the lower part of the fixing plate along the conveying line, and the injection molded part carrier is lifted by the supporting plate. At the same time, the clamping and positioning assembly is driven to perform clamping and positioning on both sides of the injection molded part carrier to ensure that the resistance is directly below the corresponding resistance press-fitting punch. The resistance press-fitting punch is used to clamp and deform the resistance teeth, ensuring the connection strength between the resistance teeth and the wire at the end of the resistance, avoiding loosening problems, and the contact between the resistance teeth and the wire at the end of the resistance is closer, ensuring a stable contact area, which is beneficial to improving the stability of the resistance value, with high production efficiency and suitable for mass production. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to these drawings, where:

[0017] Figure 1 is a schematic structural diagram of a preferred embodiment of an institution for resistance press-fitting of injection molded parts containing hardware parts of the present invention;

[0018] Figure 2 is Figure 1 The structural schematic diagram after removing the fixing plate in

[0019] Figure 3 is Figure 2 The partial enlarged view of part A in

[0020] Figure 4 is Figure 1 The rear view of the fixing plate in Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] Please refer to Figures 1 to 4 , the embodiments of the present invention include:

[0023] As Figures 1 through 4 shown, a mechanism for resistance press-fitting an injection molded part containing a hardware part, which is used for press-fitting the hardware part and the resistor 35 on the injection molded part 36, includes: a base 1, a conveyor line 4, a fixing plate 2, a resistance press-fitting punch 8, an injection molded part carrier 20, a pallet 37, a floating frame 30, and a clamping and positioning assembly. The conveyor line 4 passes above the base 1, and the injection molded part carrier 20 is arranged on the conveyor line 4. In this embodiment, the conveyor line 4 adopts a belt conveyor line or a chain conveyor line for transporting the injection molded part carrier 20, and 2 conveyor lines 4 can be used to improve the assembly efficiency.

[0024] As Figure 2 shown, several positioning pins 21 corresponding to the injection molded part 36 are arranged on the injection molded part carrier 20 to realize the positioning of the injection molded part 36 on the injection molded part carrier 20. Guide columns 3 are arranged on both sides of the conveyor line 4 on the base 1, and the fixing plate 2 is arranged on the top of the guide columns 3 and above the conveyor line 4. In this embodiment, the length and angle of the fixing plate 2 can span 2 conveyor lines 4.

[0025] A first lifting drive device 5 is provided in the base 1 or the conveyor line 4 and is located below the fixed plate 2. The support plate 37 is provided at the top of the first lifting drive device 5. When the injection molded part carrier 20 moves above the support plate 37, the support plate 37 and the injection molded part carrier 20 are lifted by the first lifting drive device 5. In order to limit the injection molded part carrier 20, a blocking mechanism is provided in the base 1 or the conveyor line 4. The blocking mechanism includes a second lifting drive device 6 and a blocking member 7. The blocking member 7 is provided at the top of the second lifting drive device 6 and is located on the path of the injection molded part carrier 20. When the injection molded part carrier 20 moves forward, it is blocked and positioned by the blocking member 7.

[0026] In this embodiment, the first lifting drive device 5 and the second lifting drive device 6 respectively adopt air cylinders, and their telescopic control can be performed through a PLC controller. The blocking member 7 includes a travel switch, which can be triggered by the injection molded part carrier 20 and send a signal to the PLC controller.

[0027] The floating frame 30 is provided below the support plate 37. In this embodiment, a connecting rod 32 is provided between the support plate 37 and the floating frame 30 to perform synchronous lifting. The clamping and positioning components are distributed on both sides of the support plate 37 to clamp and position the injection molded part carrier 20.

[0028] Specifically, the clamping and positioning components respectively include a first floating block 11, a second floating block 12, a top rod 29, a floating plate 28, a drive plate 27, a sliding seat 24 and an insertion block 23. The first floating block 11 is liftably provided on the guide post 3 and is connected to the floating frame 30, and is kept in synchronous lifting with the support plate 37 through the floating frame 30. In addition, the top rod 29 is vertically provided on the first floating block 11, and the floating plate 28 is provided at the top of the top rod 29 to perform synchronous lifting.

[0029] The second floating block 12 is liftably provided on the guide post 3 and is located above the floating plate 28. In this embodiment, through holes corresponding to the guide post 3 are respectively provided in the first floating block 11 and the second floating block 12, and the lifting stability is good.

[0030] The sliding seat 24 is transversely movably provided on the second floating block 12. In this embodiment, a slide rail 25 located below the sliding seat 24 is provided on the second floating block 12 to guide the transverse movement of the sliding seat 24. The drive plate 27 is vertically provided on the floating plate 28 and penetrates upward through the sliding seat 24, and a corresponding through groove is designed in the sliding seat 24, which does not affect the lifting of the drive plate 27.

[0031] As Figure 2As shown, a chute 26 extending obliquely downward and inward is provided in the driving plate 27, and a passive rod passing through the chute 26 is provided in the sliding seat 24. When the driving plate 27 rises, the sliding seat 24 is driven to move horizontally through the cooperation of the chute 26 and the passive rod. The insertion block 23 is arranged at the inner end of the sliding seat 24, and sockets 22 corresponding to the insertion blocks 23 one by one are arranged on both sides of the injection molding part carrier 20. During the rising process of the support plate 37, the clamping and positioning of the injection molding part carrier 20 are realized, improving the position accuracy of the injection molding part carrier 20.

[0032] The resistance pressing punch 8 is vertically arranged on the fixed plate 2 and corresponds to the hardware parts on the injection molding part 36. As Figure 3 shown, resistance teeth 38 for positioning the wires 34 at both ends of the fixed resistance 35 are provided on the hardware parts. Concave squeezing grooves 33 corresponding to the end wires of the resistance 35 are arranged in the resistance teeth 38. Through the close cooperation between the squeezing grooves 33 on the resistance teeth 38 and the wires 34 at the end of the resistance 35, the wires 34 are squeezed into and clamped and positioned by the squeezing grooves 33.

[0033] As Figure 4 shown, two pressure rods 18 are arranged at intervals at the bottom of the resistance pressing punch 8. The bottom of the pressure rod 18 is concave and provided with a V-shaped groove 19 covering the corresponding resistance teeth 38. During the continuous upward movement of the injection molding part carrier 20 along with the support plate 37, the resistance teeth 38 are clamped and deformed by using the V-shaped groove 19. The tops of both sides of the resistance teeth 38 are bent inward, which can ensure the connection strength between the resistance teeth 38 and the wires 34 at the end of the resistance 35, avoiding the problem of loosening. Moreover, the contact between the resistance teeth 38 and the wires 34 at the end of the resistance is closer, ensuring a stable contact area and being beneficial to improving the stability of the resistance value.

[0034] In order to fix the resistance pressing punch 8 and adjust its height position, fixing seats 9 corresponding to the resistance pressing punches 8 one by one are arranged on the fixed plate 2. The bottom of the fixing seat 9 is concave and provided with a slot corresponding to the upper part of the resistance pressing punch 8. The upper part of the resistance pressing punch 8 is inserted, so that the upper part of the resistance pressing punch 8 can be arranged in the slot. A first threaded hole 10 pointing downward to the top end of the resistance pressing punch 8 is arranged at the top of the fixing seat 9, and a second threaded hole 17 pointing to the side of the resistance pressing punch 8 is arranged on the side of the fixing seat 9. Screws are respectively arranged in the first threaded hole 10 and the second threaded hole 17 to fasten and adjust the height of the resistance pressing punch 8.

[0035] A linkage sleeve 31 sleeved on the guide post 3 and pointing upward to the second floating block 12 is arranged on the first floating block 11. As Figure 1 and Figure 2As shown, in the initial state, there is a certain gap between the top of the linkage sleeve 31 and the second floating block 12. During the upward movement of the first floating block 11, after the block to be inserted 23 is laterally inserted into the corresponding socket 22, the linkage sleeve 31 contacts the second floating block 12, realizing the synchronous upward movement of the first floating block 11 and the second floating block 12. Then, the resistance pressing punch 8 punches the resistance teeth 38 to fix the resistance by pressing.

[0036] In this embodiment, a frame 13 is provided at the bottom of the second floating block 12. The floating plate 28 is located in the frame 13. A first spring 14 is sleeved on the ejector rod 29 and is located between the bottom of the frame 13 and the floating plate 28 to elastically support the floating plate 28. A screw 16 that extends downward and is connected to the second floating block 12 is vertically movably provided on the fixed plate 2 to limit the downward movement stroke of the second floating block 12. A second spring 15 is sleeved on the screw 16 and is located between the fixed plate 2 and the second floating block 12 to facilitate the elastic downward pressing and resetting of the second floating block 12 after stamping.

[0037] In summary, a mechanism for resistance pressing of injection molded parts containing hardware parts pointed out by the present invention realizes the conveying of injection molded parts and the pressing of resistors on the hardware parts, improves production efficiency and the assembly stability of resistors, and has high positioning accuracy of injection molded parts, improving the product qualification rate of the pressing process.

[0038] The above are only embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the content of the specification of the present invention, or directly or indirectly applied in other related technical fields, is similarly included in the patent protection scope of the present invention.

Claims

1. A mechanism for resistance press-fitting of injection-molded parts with hardware components, used for press-fitting hardware components and resistors on injection-molded parts. Characterized in that, Comprising: A base, a conveyor line, a fixed plate, a resistor press-fitting punch, an injection-molded part carrier, a support plate, a floating frame and a clamping and positioning assembly. The conveyor line passes above the base. Guide columns are arranged on both sides of the conveyor line on the base. The fixed plate is arranged on the top of the guide columns and above the conveyor line. The injection-molded part carrier is arranged on the conveyor line. A first lifting drive device is arranged below the fixed plate in the base or the conveyor line. The support plate is arranged on the top of the first lifting drive device. The floating frame is arranged below the support plate. A connecting rod is arranged between the support plate and the floating frame. The clamping and positioning assemblies are distributed on both sides of the support plate. Each clamping and positioning assembly respectively includes a first floating block, a second floating block, a top rod, a floating plate, a drive plate, a sliding seat and an insert block. The first floating block is arranged on the guide column in a liftable manner and is connected to the floating frame. The top rod is arranged vertically on the first floating block. The floating plate is arranged on the top of the top rod. The second floating block is arranged on the guide column in a liftable manner and above the floating plate. The sliding seat is arranged on the second floating block in a transversely movable manner. The drive plate is arranged vertically on the floating plate and penetrates upward through the sliding seat. An inclined chute extending downward and inward is arranged in the drive plate. A passive rod penetrating the chute is arranged in the sliding seat. The insert block is arranged at the inner end of the sliding seat. Sockets corresponding to the insert blocks one by one are arranged on both sides of the injection-molded part carrier. The resistor press-fitting punch is arranged vertically on the fixed plate and corresponds to the hardware component on the injection-molded part. Resistance teeth for positioning the two ends of the resistor wire are arranged on the hardware component. A squeezing groove corresponding to the end wire of the resistor is concavely arranged on the resistance teeth. A fixed seat corresponding to the resistor press-fitting punch one by one is arranged on the fixed plate. A slot corresponding to the upper part of the resistor press-fitting punch is concavely arranged at the bottom of the fixed seat. The upper part of the resistor press-fitting punch is arranged in the slot. A first threaded hole pointing downward to the top end of the resistor press-fitting punch is arranged at the top of the fixed seat. A second threaded hole pointing to the side of the resistor press-fitting punch is arranged on the side of the fixed seat. Screws are respectively arranged in the first threaded hole and the second threaded hole.

2. The mechanism for resistance press-fitting of injection-molded parts with hardware components according to claim 1, Characterized in that, The conveyor line adopts a belt conveyor line or a chain conveyor line.

3. The mechanism for resistance press-fitting of injection-molded parts with hardware components according to claim 1, Characterized in that, A blocking mechanism is arranged in the base or the conveyor line. The blocking mechanism includes a second lifting drive device and a blocking member. The blocking member is arranged on the top of the second lifting drive device and on the path of the injection-molded part carrier.

4. The mechanism for resistance press-fitting of injection-molded parts with hardware components according to claim 3, Characterized in that, The first lifting drive device and the second lifting drive device respectively adopt air cylinders. The blocking member includes a travel switch.

5. The mechanism for resistance press-fitting of injection-molded parts with hardware components according to claim 1, Characterized in that, A slide rail is provided on the second floating block and is located below the slide base.

6. The mechanism for resistance press-fitting an injection molded part containing a hardware component according to claim 1, wherein, a plurality of positioning pins corresponding to the injection molded part are provided on the injection molded part carrier.

7. The mechanism for resistance press-fitting an injection molded part containing a hardware component according to claim 1, wherein, two pressure rods are spaced apart at the bottom of the resistance press-fitting punch, and a V-shaped groove covering the corresponding resistance teeth is concavely provided at the bottom of the pressure rod.

8. The mechanism for resistance press-fitting an injection molded part containing a hardware component according to claim 1, wherein, through holes corresponding to the guide posts are respectively provided in the first floating block and the second floating block. A linkage sleeve is provided on the first floating block and is sleeved on the guide post and points upward to the second floating block. A frame body is provided at the bottom of the second floating block. The floating plate is located in the frame body. A first spring is sleeved on the ejector rod and is located between the bottom of the frame body and the floating plate. A screw is liftably provided on the fixed plate and extends downward and is connected to the second floating block. A second spring is sleeved on the screw and is located between the fixed plate and the second floating block.

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