Injection mold core and product separation mechanism

Abstract

The present invention proposes an injection mold core and product separation mechanism, comprising an upper base plate, a lower base plate, a cam mechanism, and a connecting rod mechanism. Multiple mold core groups are positioned in a chute on the lower base plate via a separating slider. The cam mechanism, positioned above the lower base plate, drives the movement of the first mold core jig of the mold core group. Two connecting rod mechanisms, symmetrically positioned on either side of the cam mechanism, drive the movement of the product jig of the mold core group. This approach solves the existing problem of interference between the injection mold core and the product, making it difficult to separate after injection molding.

Description

Technical Field

[0001] The present invention relates to the field of injection molding, in particular to an injection mold core and a product separation mechanism. Background Art

[0002] like Figure 1 、 Figure 2 The figure shows a core mold assembly for an injection molded product, comprising a first core mold jig 11, a second core mold jig 12, and a product jig 13. A first core mold 14 is provided on the first core mold jig 11, a second core mold 15 is provided on the second core mold jig 12, and a product 16 is provided on the product jig 13. After injection molding is completed and the product is removed from the injection molding machine, the first core mold 14, the second core mold 15, and the product 16 interfere with each other and cannot be directly removed. Specifically, the D end of the first core mold 14 is inserted into the D end of the second core mold 15, the B end of the first core mold 14 is inserted into the B end of the product 16, the A end of the second core mold 15 is inserted into the A end of the product 16, and the C collar of the product is sleeved on the C positioning column of the product jig 13.

[0003] The temperature of the mold and product that have just been injected is very high. Manual separation can easily cause burns. Wearing high-temperature gloves will reduce efficiency. There is also the possibility that residual foreign matter or dust on the gloves will fall into the mold and product, causing product abnormalities. Manual separation may also cause scratches on the product or mold core due to errors in the separation direction and sequence. Summary of the Invention

[0004] In order to solve the above problems, the present invention proposes an injection mold core and product separation mechanism, which solves the problem that the existing injection mold core and the product are difficult to separate due to interference after injection molding.

[0005] The main contents of the present invention include: an injection mold core and product separation mechanism, including: an upper base plate, a lower base plate, a cam mechanism, and a connecting rod mechanism. Multiple mold core groups are arranged in a slide groove of the lower base plate through a separation slider. The cam mechanism is arranged above the lower base plate and is used to drive the first mold core fixture of the mold core group to move. The number of the connecting rod mechanisms is symmetrically arranged on both sides of the cam mechanism and is used to drive the product fixture of the mold core group to move.

[0006] The cam mechanism includes: a cam plate, and a cam plate driving mechanism for driving the cam plate to move; the cam plate is provided with an S-shaped or arc-shaped cam groove at one end close to the separation slider, the number of which matches the number of the separation slider; the front end of the separation slider is inserted into the cam groove via a coupling, so that when the cam plate moves longitudinally, the separation slider can move laterally; the first core jig of the mold core group is fixed to the separation slider; when the separation slider moves laterally, the first core jig is driven to move laterally synchronously and be separated from the mold core group;

[0007] The connecting rod mechanism includes: a connecting rod provided at one end of the lower base plate, a rotating shaft provided in the middle of the connecting rod, and two ends of the connecting rod respectively connected to a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod being symmetrically provided on both sides of the cam plate, and product jigs of multiple core groups being fixed to the first connecting rod and the second connecting rod respectively, and when the first connecting rod and the second connecting rod move longitudinally, the corresponding product jigs are respectively driven to move longitudinally, thereby being separated from the core group;

[0008] The first connecting rod or the second connecting rod is driven by a travel shift block fixed to the cam plate. A limiting groove is provided on the side of the first connecting rod or the second connecting rod close to the cam plate, and limiting steps are respectively provided at both ends of the limiting groove. One end of the travel shift block is fixed to the cam plate, and the other end is located in the limiting groove, and can move between the two limiting steps along with the cam plate.

[0009] Preferably, the cam plate driving mechanism includes: a motor, the output end of the motor is connected to the screw rod, a motor slider is provided at the screw rod, the motor slider is connected to the cam plate through the motor slide plate and the connecting plate, and when the motor rotates, the motor slider drives the cam plate to move longitudinally.

[0010] Preferably, it also includes a clamping mechanism, which includes: a first clamping cylinder and a second clamping cylinder, a first slide bar and a second slide bar respectively connected to the piston rod of the first clamping cylinder and the piston rod of the second clamping cylinder, and upper substrate slide grooves are respectively opened on both sides of the upper substrate, and the first slide bar and the second slide bar are respectively arranged in the upper substrate slide grooves on both sides of the upper substrate, and a clamping block is respectively provided on the outside of the second mold core of each mold core group, and the clamping block is fixed to the first slide bar or the second slide bar. When the first slide bar or the second slide bar moves, it drives the corresponding clamping block to clamp the corresponding second mold core.

[0011] Preferably, the core mold groups on both sides of the cam plate are set in opposite directions. Since the movement directions of the first connecting rod and the second connecting rod are opposite, when the first connecting rod and the second connecting rod move at the same time, the product fixtures of the core mold groups on both sides of the cam plate can be separated at the same time.

[0012] Preferably, each core group is provided with a sensor for detecting the movement of the first core jig, the second core jig and the product jig.

[0013] Preferably, the contact surface between the pressing block and the second mold core is set as an inclined surface or a stepped surface, so that the pressing block can generate a vertical pressing force on the second mold core when moving longitudinally.

[0014] Preferably, the first mold core jig is provided with a linked separation force block, and the separation force block is provided with a force block slot matching the second mold core. When the first mold core jig is separated, the force block slot can be engaged with the second mold core for limiting position.

[0015] The beneficial effects of the present invention are:

[0016] 1. The present invention can realize automatic separation of the core group through structural design, eliminating the need for manual product separation and reducing manpower input;

[0017] 2. The mechanical separation method improves the demoulding efficiency and accuracy of the product compared to manual separation, thus ensuring the quality of the product;

[0018] 3. The present invention, through the arrangement of the cam mechanism and the connecting rod mechanism, only requires one power device to achieve the separation between the first mold core jig, the second mold core jig and the product jig, and the structure is simple and ingenious. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the three-dimensional structure of the core assembly;

[0020] Figure 2 The exploded view of the core assembly;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of a preferred embodiment of an injection mold core and a product separation mechanism;

[0022] Figure 4 for Figure 3 A partial enlarged schematic diagram of part A;

[0023] Figure 5 It is a three-dimensional structural diagram of an injection mold core and a product separation mechanism without a mold core assembly installed;

[0024] Figure 6 for Figure 5 A partial enlarged schematic diagram of part B in the middle;

[0025] Figure 7 Schematic diagram of the three-dimensional structure of the cam plate driving mechanism;

[0026] Figure 8 Schematic diagram of the three-dimensional structure of the connecting rod mechanism;

[0027] Figure 9 for Figure 8 A partial enlarged schematic diagram of part C in the middle;

[0028] Figure 10 Schematic diagram of the three-dimensional structure of the upper substrate;

[0029] Figure 11 Working principle of the cam plate Figure 1 ;

[0030] Figure 12 Working principle of the cam plate Figure 2 ;

[0031] Reference numerals:

[0032] 1. Mold core set, 11. First mold core fixture, 12. Second mold core fixture, 13. Product fixture, 14. First mold core, 15.

[0033] Second mold core, 16, product, 17, separation force block, 18, force block slot, 19, separation slider, 191, limit shaft hole,

[0034] 2. Upper base plate, 21. Upper base plate chute,

[0035] 3. Lower base plate, 31. Lower base plate chute,

[0036] 4. Cam plate, 41. Cam plate driving mechanism, 42. Stroke shift block, 43. Cam slot, 411. Motor, 412. Motor slider, 413. Motor slide plate, 414. Connecting plate,

[0037] 5. Clamping mechanism, 51. First clamping cylinder, 52. Second clamping cylinder, 53. First slide bar, 54. Second slide bar, 55. Clamping block,

[0038] 6. Connecting rod mechanism, 61. Connecting rod, 62. Rotating shaft, 63. First connecting rod, 64. Second connecting rod, 65. Connecting rod slide, 631. Limiting groove, 632. Limiting step. DETAILED DESCRIPTION

[0039] The technical solution protected by the present invention is described in detail below with reference to the accompanying drawings.

[0040] like Figure 1 As shown, an injection mold core and product separation mechanism includes: an upper base plate 2, a lower base plate 3, a cam mechanism, and a connecting rod mechanism 6. Two groups of core groups are set in two groups of lower base plate slide grooves 31 of the lower base plate 3 through a separation slider 19. The two groups of core groups are arranged opposite to each other, and the directions of the product fixtures 13 are opposite. The cam mechanism is arranged above the lower base plate 3 and is used to drive the first core fixture 11 of the core group 1 to move. The number of connecting rods in the connecting rod mechanism 6 is two, and they are symmetrically arranged on both sides of the cam mechanism to drive the product fixture 13 in the core group to move;

[0041] like Figure 11 、 Figure 12 As shown, the cam mechanism includes: a cam plate 4, a cam plate driving mechanism 41 for driving the cam plate 4 to move, and an end of the cam plate 4 close to the separation slider 19 is provided with an S-shaped or arc-shaped cam groove 43 matching the number of the separation sliders. The front end of the separation slider 19 is inserted into the cam groove 43 through a coupling. Figure 12As shown, a limiting shaft hole 191 is provided at one end of the separation slider 19, and a rotating shaft and a coupling are provided in the limiting shaft hole 191 to facilitate the lateral movement of the separation slider 19 along with the longitudinal movement of the cam plate 4. The first core mold fixture 11 of the core group is fixed to the separation slider 19. When the separation slider 19 moves laterally, it drives the first core mold fixture 11 to move laterally synchronously and separate from the core group 1.

[0042] like Figure 8 、 Figure 9 As shown, the connecting rod mechanism 6 includes: a connecting rod 61 arranged at one end of the lower base plate, a rotating shaft 62 is provided in the middle of the connecting rod 61, and the two ends of the connecting rod 61 are respectively connected to the first connecting rod 63 and the second connecting rod 64, the first connecting rod 63 and the second connecting rod 64 are symmetrically arranged on both sides of the cam plate 4, and the product fixtures of multiple core groups are respectively fixed to the first connecting rod 63 and the second connecting rod 64. When the first connecting rod 63 and the second connecting rod 64 move longitudinally, they respectively drive the corresponding product fixtures to move longitudinally, thereby separating them from the core group 1.

[0043] Since the two groups of core assemblies are arranged relative to each other and the directions of the product fixtures are opposite, when the first connecting rod 63 moves in one direction, the second connecting rod 64 moves in the opposite direction due to the action of the connecting rod. Therefore, the product fixtures arranged in opposite directions can be moved away from the core assembly or towards the core assembly at the same time.

[0044] like Figure 9 As shown in the figure, the first connecting rod 63 is driven by the travel shift block 42 fixed to the cam plate 4. A limiting groove 631 is provided on the side of the first connecting rod 63 close to the cam plate 4. Limiting steps 632 are respectively provided at both ends of the limiting groove 631. One end of the travel shift block 42 is fixed to the cam plate 4, and the other end is located in the limiting groove 631, and can move between the two limiting steps 632 along with the cam plate 4. The design of the limiting groove 631 and the limiting step 632 plays a role of delayed driving, that is, when the cam plate 4 moves, the separation slider 19 is driven to move first, and the separation slider 19 drives the first core jig 11 and the first mold core 14 to move and separate from the mold core group 1. At this time, the travel shift block 42 moves in the limiting groove 631 and will not contact the first connecting rod 63, that is, it will not drive the first connecting rod 63 to move, so the product jig 13 remains stationary; and when the first mold core 14 is completely separated, the travel shift block 42 contacts the limiting step 632 at the first connecting rod 63. As the cam plate 4 continues to move, the travel shift block 42 drives the first connecting rod 63 to move. Since the product jig 13 is fixed to the first connecting rod 63, the first connecting rod 63 drives the product jig 13 and the product 16 to move and separate from the mold core group 1. There is a time difference between the movement of the product jig 13 and the movement of the first core jig 11, which avoids interference caused by the simultaneous movement of the two.

[0045] like Figure 7 As shown, the cam plate driving mechanism 41 includes: a motor 411, the motor 411 adopts a servo motor, a reducer is set at the output end, the output end of the reducer is connected to the lead screw, and a motor slider 412 is set at the lead screw. The motor slider 412 is connected to the cam plate 4 through the motor slide plate 413 and the connecting plate 414. When the motor 411 rotates, the motor slider 412 drives the cam plate 4 to move longitudinally.

[0046] like Figure 5 、 Figure 6 As shown, it also includes a clamping mechanism 5, which includes: a first clamping cylinder 51 and a second clamping cylinder 52, a first slide 53 and a second slide 54 respectively connected to the first clamping cylinder piston rod and the second clamping cylinder piston rod, and upper substrate slide grooves 21 are respectively opened on both sides of the upper substrate 2, and the first slide 53 and the second slide 54 are respectively arranged in the upper substrate slide grooves 21 on both sides of the upper substrate, and a clamping block 55 is respectively provided on the outside of the second core of each core group, and the clamping block 55 is fixed to the first slide 53 or the second slide 54, and the two slides are driven to move in the upper substrate slide groove 21 by two clamping cylinders. When the first slide 53 or the second slide 54 moves, the corresponding clamping block 55 is driven to clamp the corresponding second core 15.

[0047] Furthermore, the contact surface between the pressing block 55 and the second mold core 15 is configured as an inclined surface or a stepped surface, so that the pressing block 55 can exert a vertical pressing force on the second mold core 15 when moving longitudinally. This prevents the second mold core 15 from becoming unstable when the first mold core jig 11 and the product jig 13 are separated, thereby preventing the separation of the first mold core jig 11 and the product jig 13 from occurring.

[0048] In addition, in the present application, a sensor is provided at each core group for sensing the movement of the first core jig 11 , the second core jig 12 and the product jig 13 .

[0049] like Figure 1 、 Figure 2 As shown, in order to facilitate the separation of the product jig 13 from the mold core group 1, the first mold core jig 11 is provided with a linked separation force block 17, and the separation force block 17 is provided with a force block slot 18 matching the second mold core 15. When the first mold core jig 11 is separated, the force block slot 18 can be engaged with the second mold core 15 to limit the second mold core 15, further preventing the second mold core 15 from moving when the product jig 13 is separated.

[0050] The working principle of the present invention is:

[0051] Before separation, the two clamping cylinders drive the clamping block 55 to move and press the second mold core 15; then the servo motor 411 rotates, driving the cam plate 4 to move, and the cam plate 4 drives the separation slider 19 to move. The separation slider 19 is fixed to the first mold core fixture 11, so the first mold core fixture 11 moves together and separates from the mold core group 1; when the first mold core fixture 11 moves out to the set position, the stroke shift block 42 contacts the limiting step 632 of the first connecting rod 63, and the cam plate 4 drives the stroke shift block 42 to continue moving, thereby driving the first connecting rod 63 to move. Since the second connecting rod 64 and the first connecting rod 63 act as a connecting rod, the second connecting rod 64 moves in the opposite direction, so that the product fixtures 13 on both sides can move at the same time and separate from the mold core group 1; finally, the first mold core 14, the second mold core 15, and the product 16 on both sides are separated, and then grabbed and removed by an external robot, completing the entire demolding process.

[0052] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structures or equivalent process changes made using the contents of the present invention's description and drawings, or directly or indirectly applied to other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An injection mold core and product separation mechanism, characterized in that: include: An upper base plate, a lower base plate, a cam mechanism, and a connecting rod mechanism. Multiple core mold groups are arranged in the lower base plate slide groove through a separation slider. The cam mechanism is arranged above the lower base plate and is used to drive the first core mold fixture of the core mold group to move. The connecting rod mechanism has two connecting rods, which are symmetrically arranged on both sides of the cam mechanism and are used to drive the product fixture of the core mold group to move. The cam mechanism includes: a cam plate, and a cam plate driving mechanism for driving the cam plate to move; the cam plate is provided with an S-shaped or arc-shaped cam groove at one end close to the separation slider, the number of which matches the number of the separation slider; the front end of the separation slider is inserted into the cam groove via a coupling, so that when the cam plate moves longitudinally, the separation slider can move laterally; the first core jig of the mold core group is fixed to the separation slider; when the separation slider moves laterally, the first core jig is driven to move laterally synchronously and be separated from the mold core group; The connecting rod mechanism includes: a connecting rod provided at one end of the lower base plate, a rotating shaft provided in the middle of the connecting rod, and two ends of the connecting rod respectively connected to a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod being symmetrically provided on both sides of the cam plate, and product jigs of multiple core groups being fixed to the first connecting rod and the second connecting rod respectively, and when the first connecting rod and the second connecting rod move longitudinally, the corresponding product jigs are respectively driven to move longitudinally, thereby being separated from the core group; The first connecting rod or the second connecting rod is driven by a travel shift block fixed to the cam plate. A limiting groove is provided on the side of the first connecting rod or the second connecting rod close to the cam plate, and limiting steps are respectively provided at both ends of the limiting groove. One end of the travel shift block is fixed to the cam plate, and the other end is located in the limiting groove, and can move between the two limiting steps along with the cam plate.

2. The injection mold core and product separation mechanism according to claim 1, characterized in that: The cam plate driving mechanism includes: a motor, the output end of the motor is connected to the screw rod, a motor slider is provided at the screw rod, the motor slider is connected to the cam plate through the motor slide plate and the connecting plate, when the motor rotates, the motor slider drives the cam plate to move longitudinally.

3. The injection mold core and product separation mechanism according to claim 1, characterized in that: It also includes a clamping mechanism, which includes: a first clamping cylinder and a second clamping cylinder, a first slide bar and a second slide bar connected to the piston rod of the first clamping cylinder and the piston rod of the second clamping cylinder respectively, and upper substrate slide grooves are respectively opened on both sides of the upper substrate, and the first slide bar and the second slide bar are respectively arranged in the upper substrate slide grooves on both sides of the upper substrate, and a clamping block is respectively provided on the outer side of the second mold core of each mold core group, and the clamping block is fixed to the first slide bar or the second slide bar. When the first slide bar or the second slide bar moves, it drives the corresponding clamping block to clamp the corresponding second mold core.

4. The injection mold core and product separation mechanism according to claim 1, characterized in that: The core mold groups on both sides of the cam plate are set in opposite directions. Since the movement directions of the first connecting rod and the second connecting rod are opposite, when the first connecting rod and the second connecting rod move at the same time, the product fixtures of the core mold groups on both sides of the cam plate can be separated at the same time.

5. The injection mold core and product separation mechanism according to claim 1, characterized in that: Each core group is provided with a sensor for detecting the movement of the first core jig, the second core jig and the product jig.

6. The injection mold core and product separation mechanism according to claim 3, characterized in that: The contact surface between the pressing block and the second mold core is set as an inclined surface or a stepped surface, so that the pressing block can generate a vertical pressing force on the second mold core when moving longitudinally.

7. The injection mold core and product separation mechanism according to claim 1, characterized in that: The first mold core jig is provided with a linked separation force block, and the separation force block is provided with a force block slot matching the second mold core. When the first mold core jig is separated, the force block slot can be engaged with the second mold core for limiting position.

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