Injection mold hardware terminal pickup mechanism

Abstract

The application relates to a pickup mechanism for hardware terminals of an injection mold, which comprises a feeding support and a transplanting mechanism; the transplanting mechanism comprises a whole machine handle, a fixed block, an adjusting handle, a control panel, a plurality of single control panels and a plurality of material taking execution heads; the material taking execution head comprises a stand, a material taking block, an inclined slot wheel unit, a terminal fixing unit and a material removing unit, the stand is provided with an arc-shaped guide slot, the inclined slot wheel unit is embedded in the fixed block and is in sliding fit with the arc-shaped guide slot, the stand lifting can drive the terminal fixing unit to laterally stretch and retract, the limit and release of special-shaped hardware terminals are realized; the adjusting handle is provided with a double-gear elastic plunger, the limit and release states of the terminal fixing unit are switched by controlling the stand lifting; the material removing unit is arranged above the special-shaped hardware terminals and is used for downwardly pressing the special-shaped hardware terminals in the material removing process. The application can realize batch pickup and precise burying operation of the hardware terminals, effectively improves the terminal assembly efficiency of the injection mold, and avoids the melting time of plastic particles in the barrel being overlimited.

Description

Technical Field

[0001] This invention relates to the field of injection molding integrated processing technology, and in particular to a hardware terminal picking mechanism for injection molds. Background Technology

[0002] Pre-embedded injection molding of irregularly shaped metal terminals is the mainstream molding process for connectors and precision electronic components. During the production process, the metal terminals must be accurately placed in the cavity of the injection mold before the mold can be closed to complete the injection molding.

[0003] Currently, the pre-embedding of metal terminals in the mold mainly adopts the manual embedding method, that is, the operator uses a simple clamp to send the metal terminal into the high-temperature mold cavity. This operation method has many drawbacks:

[0004] 1. The mold is in a high-temperature state for a long time, and close-range manual operation is prone to burn accidents, which poses a significant production safety hazard;

[0005] 2. The consistency of manual placement of terminals is poor, and terminals are prone to problems such as misalignment, floating, and tilting. After injection molding, defects such as exposed terminals, local missing glue, and short circuits are likely to occur, resulting in a low product yield.

[0006] 3. Only a small number of terminals can be placed manually at a time. The entire terminal embedding operation takes longer than the 40-second working window limited by the injection molding process. Plastic particles are prone to carbonization when they melt at high temperatures in the barrel for a long time, resulting in appearance and performance defects such as black spots and material cracking in the product.

[0007] 4. Manual operation has a low capacity limit, making it difficult to meet the needs of large-scale continuous injection molding production. Summary of the Invention

[0008] This invention provides a hardware terminal picking mechanism for injection molds to solve the above-mentioned technical problems.

[0009] To solve the above-mentioned technical problems, the present invention provides a metal terminal picking mechanism for injection molds, including a feeding support and a transfer mechanism.

[0010] The feeding support is used to place irregularly shaped metal terminals to be picked up;

[0011] The transplanting mechanism includes a machine handle, a fixed block, an adjusting handle, a control board, multiple single control boards, and multiple material handling heads. The machine handle is fixedly installed on the fixed block and is used to drive the transplanting mechanism to lift and lower as a whole. The adjusting handle is assembled below the machine handle via a dual-position elastic plunger. The adjusting handle is fixedly installed on the control board. Multiple single control boards are assembled below the control board, and each single control board is connected to a material handling head at its bottom.

[0012] Each of the material handling heads includes a column, a material handling block, a slanted slot wheel unit, a terminal fixing unit, and a material unloading unit; the upper end of the column is fixed to the bottom of the single control board, and the lower end of the column passes through the fixing block and is fixedly connected to the material handling block; the material handling block has an inner core positioning cavity that matches the shape of the irregular metal terminal, and the irregular metal terminal on the loading support can be inserted into the inner core positioning cavity to complete the pre-positioning; the column has an arc-shaped guide groove, and the slanted slot wheel unit is embedded in the fixing block and slides in contact with the arc-shaped guide groove; the terminal fixing unit is fixed to the end of the slanted slot wheel unit and is correspondingly arranged on the side of the material handling block;

[0013] When the column moves downward relative to the fixed block, the column drives the inclined slot wheel unit to move towards the material picking block through the arc-shaped guide groove, and the terminal fixing unit extends laterally to complete the limiting of the irregular-shaped hardware terminal; when the column moves upward relative to the fixed block, the column drives the inclined slot wheel unit to move away from the material picking block through the arc-shaped guide groove, and the terminal fixing unit retracts and releases the irregular-shaped hardware terminal; the adjusting handle controls the lifting and lowering of the column through different positions of the dual-position elastic plunger to switch the limiting state and the release state of the terminal fixing unit;

[0014] The unloading unit is arranged inside the fixed block and is vertically aligned with the irregular metal terminal, and is used to press the irregular metal terminal downward during the unloading process.

[0015] Preferably, the inclined slot wheel unit includes a roller seat, a guide roller, and a first spring. The roller seat is slidably mounted in the fixed block, the guide roller is mounted on the roller seat, and the first spring acts on the roller seat to drive the guide roller to always conform to the arc-shaped guide groove and maintain sliding contact.

[0016] Preferably, the terminal fixing unit is equipped with two replaceable working claws: when the irregular-shaped hardware terminals are arranged side by side with intervals, a claw corresponding to the terminal intervals is used; when the irregular-shaped hardware terminals are arranged individually, a hook claw matching the holes on the irregular-shaped hardware terminals is used.

[0017] Preferably, both the gripper and the hook are made of flexible material.

[0018] Preferably, the ejector unit includes a ejector pin and a second spring, the upper end of the second spring abutting against the fixing block and the lower end abutting against the ejector pin, and the ejector pin can extend downward and contact the irregular metal terminal in the inner core positioning cavity.

[0019] Preferably, the lower end face of the ejector pin is provided with a wear-resistant buffer pad layer.

[0020] Preferably, the control board and the single control board are assembled in a detachable manner.

[0021] Preferably, each of the fixing blocks is provided with at least two positioning guide posts below it, and the feeding support is provided with positioning holes that match the positioning guide posts.

[0022] Preferably, the feeding support is provided with multiple sets of contour placement slots, each set of contour placement slots corresponding one-to-one with the inner core positioning cavity of the picking block, for batch placement of the irregular-shaped hardware terminals.

[0023] Preferably, the main handle and adjustment handle are operated manually or automatically by an external robotic arm.

[0024] Compared with the prior art, the injection mold hardware terminal picking mechanism provided by the present invention has the following advantages:

[0025] 1. This invention adopts a slanted slot wheel linkage structure in conjunction with a terminal fixing unit with replaceable claw body, which can be adapted to two different forms of hardware terminals, side by side and independent, and simultaneously realize the picking up and precise embedding of multi-hole terminals. The terminal embedding accuracy is high, effectively reducing assembly misalignment.

[0026] 2. This invention can complete the terminal embedding operation in batches and simultaneously, greatly improving the overall work efficiency of the terminal embedding process, avoiding the plastic particles from being heated and melted in the barrel for too long, and ensuring the molding quality of the injection molded products.

[0027] 3. By setting a stripping unit inside the fixed block, the present invention can continuously press down on the hardware terminals during the stripping process, preventing the terminals from sticking and being carried out as the tooling is lifted, thus improving the reliability of continuous operation of the equipment.

[0028] 4. The control board and single control board of this invention can be detached and assembled. The whole machine supports two operation modes: manual hand-held and robotic arm automation. It can flexibly adapt to different numbers and specifications of hardware terminals, and the equipment has strong versatility. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural schematic diagram of the injection mold hardware terminal picking mechanism in a specific embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the transplanting mechanism in a specific embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the internal structure of the material handling head in a specific embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the inclined slot wheel unit and the terminal fixing unit in a specific embodiment of the present invention.

[0033] In the diagram: 001-Irregularly shaped hardware terminal; 100-Feeding support, 110-Positioning hole, 200-Machine handle, 300-Fixing block, 310-Positioning guide post, 400-Adjusting handle, 410-Dual-position elastic plunger, 500-Control board, 600-Single control board, 700-Material handling execution head, 710-Column, 711-Arc-shaped guide groove, 720-Material handling block, 730-Angled slot wheel unit, 731-Roller seat, 732-Guide roller, 733-First spring, 740-Terminal fixing unit, 741-Gripper, 742-Hook, 750-Extraction unit, 751-Ejector pin, 752-Second spring. Detailed Implementation

[0034] To illustrate the technical solutions of the invention in more detail, specific embodiments are listed below to demonstrate the technical effects; it should be emphasized that these embodiments are used to illustrate the invention and not to limit the scope of the invention.

[0035] The injection mold hardware terminal picking mechanism provided by this invention, such as... Figures 1 to 3 As shown, it includes a feeding support 100 and a transfer mechanism. The feeding support 100 is used to centrally place the irregularly shaped hardware terminals 001 to be picked up, so that the transfer mechanism can pick up multiple terminals at one time and realize batch feeding.

[0036] The transplanting mechanism includes a handle 200, a fixing block 300, an adjusting handle 400, a control board 500, multiple single control boards 600, and multiple material handling heads 700. The handle 200 is fixedly mounted on the fixing block 300. The adjusting handle 400 is mounted below the handle 200 via a dual-position elastic plunger 410 and is fixedly mounted on the control board 500. Multiple single control boards 600 are mounted below the control board 500, and each single control board 600 is connected to a material handling head 700 at its bottom. This modular, independently assembled structure allows for flexible addition or removal of material handling points to accommodate molds with different numbers of holes. Specifically, the operator can lift and lower the entire transplanting mechanism by holding the handle 200, or the handle 200 can be docked with a robotic arm to achieve automated movement.

[0037] Each of the material handling heads 700 includes a column 710, a material handling block 720, a slanted slot wheel unit 730, a terminal fixing unit 740, and a material unloading unit 750; the upper end of the column 710 is fixed to the bottom of the single control board 600, and the lower end of the column 710 passes through the fixing block 300 and is fixedly connected to the material handling block 720; the material handling block 720 has an inner core positioning cavity that matches the shape of the irregular metal terminal 001, and the irregular metal terminal 001 on the loading support 100 can be inserted into the inner core positioning cavity to complete the pre-positioning, pre-limiting the basic position of the terminal and reducing subsequent clamping and positioning errors; the column 710 is provided with The arc-shaped guide groove 711 is used to insert the inclined slot wheel unit 730 into the fixing block 300 and slide in contact with the arc-shaped guide groove 711. Specifically, the arc-shaped guide groove 711 can be opened inside the column 710 to form a slot wheel mechanism, or it can be opened on the side of the column 710 to form a planar cam mechanism, which can convert the linear lifting motion of the column 710 into the horizontal extension and retraction motion of the terminal fixing unit 740. The terminal fixing unit 740 is fixed to the end of the inclined slot wheel unit 730 and arranged on the side of the picking block 720. It completes synchronous horizontal extension and retraction with the inclined slot wheel unit 730 to realize terminal locking and release.

[0038] When the column 710 moves downward relative to the fixed block 300, the column 710 drives the inclined slot wheel unit 730 to move towards the material picking block 720 through the arc-shaped guide groove 711, and the terminal fixing unit 740 extends laterally to complete the limiting of the irregular-shaped hardware terminal 001; when the column 710 moves upward relative to the fixed block 300, the column 710 drives the inclined slot wheel unit 730 to move away from the material picking block 720 through the arc-shaped guide groove 711, and the terminal fixing unit 740 retracts and releases the irregular-shaped hardware terminal 001. The adjusting handle 400 controls the lifting and lowering of the column 710 through different positions of the dual-position elastic plunger 410, thereby switching the limiting state and the release state of the terminal fixing unit 740. The dual-position positioning can accurately lock the two stroke positions of the column, avoiding problems such as incomplete clamping and terminal loosening during manual operation.

[0039] The stripping unit 750 is arranged inside the fixing block 300 and is vertically aligned with the irregular metal terminal 001. During the process of the transfer mechanism lifting and releasing the terminal, it continuously presses the irregular metal terminal 001 downward to counteract the adsorption force and frictional interference force between the terminal and the material taking block 720, effectively preventing the terminal from being carried out of the mold cavity by the transfer mechanism.

[0040] In some embodiments, please refer to the following: Figure 3 and Figure 4The inclined slot wheel unit 730 includes a roller seat 731, a guide roller 732, and a first spring 733. The roller seat 731 is slidably mounted in the fixing block 300, and the guide roller 732 is mounted on the roller seat 731. The first spring 733 acts on the roller seat 731, driving the guide roller 732 to always fit against the arc-shaped guide groove 711 and maintain sliding contact. The first spring 733 continuously provides preload force to ensure that the guide roller 732 fits against the arc-shaped guide groove 711 without gaps, the transmission has no idle stroke, the terminal clamping and release action responds quickly, and the positioning accuracy is higher.

[0041] In some embodiments, please refer to Figure 3 and Figure 4 The terminal fixing unit 740 is equipped with two replaceable working claws: when the irregularly shaped metal terminals 001 are arranged side-by-side at intervals, claws 741 that correspond one-to-one with the terminal intervals are used, such as... Figure 3 As shown; when the irregularly shaped metal terminal 001 is arranged independently as a single piece, a hook 742 matching the hole on the irregularly shaped metal terminal 001 is used, such as... Figure 4 As shown. The two types of claw bodies can be quickly switched according to the number and arrangement of terminals, improving the versatility of the equipment.

[0042] In some embodiments, both the gripper 741 and the hook 742 are made of flexible material, which can prevent the metal plating on the terminal surface from being scratched during the clamping process and ensure the appearance quality of the terminal. On the other hand, it can also increase the contact friction and ensure that the clamped terminal is not easy to slip or deviate.

[0043] In some embodiments, please refer to the following: Figure 3 The stripping unit 750 includes a pin 751 and a second spring 752. The upper end of the second spring 752 abuts against the fixing block 300, and the lower end abuts against the pin 751. The pin 751 can extend downward and contact the irregularly shaped metal terminal 001 in the inner core positioning cavity. The second spring 752 continuously outputs a constant downward pressure, and the pin 751 always presses the terminal tightly during the stripping process, ensuring a stable and reliable anti-slip effect. In some embodiments, the lower end surface of the pin 751 is provided with a wear-resistant buffer pad, which can buffer the hard contact between the pin 751 and the terminal, avoiding damage to the terminal, and also has wear-resistant properties, making it less prone to wear during long-term repeated operation and extending the service life of the pin 751.

[0044] In some embodiments, please refer to the following: Figure 1 The control board 500 and the single control board 600 are detachably assembled, such as with bolts and clips. Operators can add or remove the single control board 600 and the material handling head 700 according to the number of terminals of the injection mold, which is suitable for molds of different specifications such as 2-cavity, 4-cavity, and 6-cavity, and has a wider range of compatibility.

[0045] In some embodiments, please refer to the following: Figure 1 and Figure 2 Each of the fixed blocks 300 has at least two positioning guide posts 310 below it, and the loading support 100 has corresponding positioning holes 110 that match the positioning guide posts 310. During material handling, the positioning guide posts 310 and the positioning holes 110 are inserted and engaged to achieve precise alignment of the tooling and to offset the material handling position deviation caused by assembly torque and force offset.

[0046] In some embodiments, please refer to the following: Figure 1 The feeding support 100 has multiple sets of contour placement slots, each set of contour placement slots corresponding one-to-one with the inner core positioning cavity of the picking block 720, for batch and orderly placement of the irregular hardware terminals 001, ensuring that the terminals accurately enter the inner core positioning cavity of the picking block 720 and reducing the probability of picking failure.

[0047] In summary, the injection mold hardware terminal picking mechanism provided by this invention relies on the inclined slot wheel linkage structure to achieve synchronous and precise clamping and embedding of multiple terminals. After embedding, the elastic material release structure prevents the terminals from sticking. The overall tooling is adjustable and the clamping claws can be switched. It can be operated manually or connected to automated equipment, which greatly improves the pre-embedding efficiency of injection mold terminals, stabilizes the injection production cycle, and avoids molding defects caused by excessive plastic heating.

[0048] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A hardware terminal picking mechanism for injection molds, characterized in that, Including the feeding support and the transplanting mechanism, The feeding support is used to place irregularly shaped metal terminals to be picked up; The transplanting mechanism includes a machine handle, a fixed block, an adjusting handle, a control board, multiple single control boards, and multiple material handling heads. The machine handle is fixedly installed on the fixed block and is used to drive the transplanting mechanism to lift and lower as a whole. The adjusting handle is assembled below the machine handle via a dual-position elastic plunger. The adjusting handle is fixedly installed on the control board. Multiple single control boards are assembled below the control board, and each single control board is connected to a material handling head at its bottom. Each of the material handling heads includes a column, a material handling block, a slanted slot wheel unit, a terminal fixing unit, and a material unloading unit; the upper end of the column is fixed to the bottom of the single control board, and the lower end of the column passes through the fixing block and is fixedly connected to the material handling block; the material handling block has an inner core positioning cavity that matches the shape of the irregular metal terminal, and the irregular metal terminal on the loading support can be inserted into the inner core positioning cavity to complete the pre-positioning; the column has an arc-shaped guide groove, and the slanted slot wheel unit is embedded in the fixing block and slides in contact with the arc-shaped guide groove; the terminal fixing unit is fixed to the end of the slanted slot wheel unit and is correspondingly arranged on the side of the material handling block; When the column moves downward relative to the fixed block, the column drives the inclined slot wheel unit to move towards the material picking block through the arc-shaped guide groove, and the terminal fixing unit extends laterally to complete the limiting of the irregular-shaped hardware terminal; when the column moves upward relative to the fixed block, the column drives the inclined slot wheel unit to move away from the material picking block through the arc-shaped guide groove, and the terminal fixing unit retracts and releases the irregular-shaped hardware terminal; the adjusting handle controls the lifting and lowering of the column through different positions of the dual-position elastic plunger to switch the limiting state and the release state of the terminal fixing unit; The unloading unit is arranged inside the fixed block and is vertically aligned with the irregular metal terminal, and is used to press the irregular metal terminal downward during the unloading process.

2. The injection mold hardware terminal picking mechanism according to claim 1, characterized in that, The inclined slot wheel unit includes a roller seat, a guide roller, and a first spring. The roller seat is slidably assembled in the fixed block, and the guide roller is mounted on the roller seat. The first spring acts on the roller seat to drive the guide roller to always fit against the arc-shaped guide groove and maintain sliding contact.

3. The injection mold hardware terminal picking mechanism according to claim 1, characterized in that, The terminal fixing unit is equipped with two replaceable working claws: when the irregular-shaped hardware terminals are arranged side by side with intervals, a claw corresponding to the terminal intervals is used; when the irregular-shaped hardware terminals are arranged individually, a hook claw matching the holes on the irregular-shaped hardware terminals is used.

4. The injection mold hardware terminal picking mechanism according to claim 3, characterized in that, Both the grippers and hooks are made of flexible materials.

5. The injection mold hardware terminal picking mechanism according to claim 1, characterized in that, The unloading unit includes a ejector pin and a second spring. The upper end of the second spring abuts against the fixing block, and the lower end abuts against the ejector pin. The ejector pin can extend downward and contact the irregularly shaped metal terminal in the inner core positioning cavity.

6. The injection mold hardware terminal picking mechanism according to claim 5, characterized in that, The lower end face of the ejector pin is provided with a wear-resistant buffer pad layer.

7. The injection mold hardware terminal picking mechanism according to claim 1, characterized in that, The control board and the single control board are assembled in a detachable manner.

8. The injection mold hardware terminal picking mechanism according to claim 1, characterized in that, Each of the fixed blocks is provided with at least two positioning guide posts below it, and the feeding support is provided with positioning holes that match the positioning guide posts.

9. The injection mold hardware terminal picking mechanism according to claim 1, characterized in that, The feeding support has multiple sets of contour placement slots, each set of contour placement slots corresponding one-to-one with the inner core positioning cavity of the picking block, for batch placement of the irregular-shaped hardware terminals.

10. The injection mold hardware terminal picking mechanism according to claim 1, characterized in that, The main handle and adjustment handle are operated manually or automatically by connecting an external robotic arm.

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