A blanking fixture for injection molding machine

Abstract

The present invention discloses a material unloading fixture for an injection molding machine, comprising a base, the base being L-shaped and having a fixed shaft extending in a horizontal direction fixed to its upper side, a connecting sleeve sleeved on the fixed shaft, a connecting arm provided on one side of the connecting sleeve, a clamping piece for clamping a plastic barrel provided at an end of the connecting arm away from the connecting sleeve, and a driving assembly provided between the connecting sleeve and the base for driving the connecting sleeve to move so that the clamping piece can remove the plastic barrel from the injection molding machine. The driving assembly drives the connecting sleeve to rotate on the fixed shaft, so that the clamping piece on the connecting arm moves into the injection molding machine and clamps the plastic barrel, and then the driving assembly drives the connecting sleeve to rotate in the opposite direction on the fixed shaft, thereby driving the clamping piece with the plastic barrel to be removed from the injection molding machine. Compared with the method of manually opening a bin door to remove materials, this method is ultimately conducive to efficient unloading of plastic barrels.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding machines, in particular to a blanking fixture of an injection molding machine. Background Art

[0002] The operating principle of an injection molding machine is similar to that of a syringe. Using the thrust of a screw (or plunger), it injects plasticized, molten (i.e., viscous and fluid) plastic into a closed mold cavity. After solidification and finalization, the finished product is obtained. Injection molding is a cyclical process, with each cycle consisting of: quantitative feeding—melting and plasticizing—pressure injection—mold filling and cooling—mold opening and part removal. After the part is removed, the mold is closed again, and the next cycle begins.

[0003] At present, a Chinese patent with publication number CN116238092 and publication date June 9, 2023 discloses a polymer material injection molding machine, including a frame, a mold module is provided at the left end of the frame, a base is provided at the right end of the frame, an injection molding module is installed on the base, a feed frame is provided at the upper end of the injection molding module, and feed cavities are symmetrically opened at the left and right ends of the feed frame. A crushing module is provided in the feed cavity, and a drive module is provided between the crushing modules. The drive module is provided in a working groove opened in the middle of the feed frame, and a cutting roller is rotatably provided at the lower end of the feed cavity.

[0004] The chopped polymer material is further chopped by a chopped roller, and the polymer material after secondary chopped falls into the injection molding module, thereby melting the polymer material, and then injected into the mold module. After cooling and solidification, it is demolded to obtain a finished product.

[0005] During the injection molding process of plastic barrels, one plastic barrel is obtained each time. After each plastic barrel is demolded, the operator needs to open the workstation door where the mold module is located to remove the plastic barrel. The whole process is very troublesome and is not conducive to the efficient unloading of plastic barrels. Summary of the Invention

[0006] The purpose of the present invention is to provide a blanking fixture for an injection molding machine, which is conducive to the efficient blanking of plastic barrels.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: a blanking fixture for an injection molding machine, comprising a base located on one side of a mold module of the injection molding machine, the base being L-shaped and having a fixed shaft extending in a horizontal direction fixed on the upper side, a connecting sleeve being sleeved on the fixed shaft, a connecting arm being provided on one side of the connecting sleeve, a clamping piece for clamping a plastic barrel being provided at one end of the connecting arm away from the connecting sleeve, and a driving component being provided between the connecting sleeve and the base for driving the connecting sleeve to move so that the clamping piece can clamp the plastic barrel out of the injection molding machine.

[0008] By adopting the above technical solution, the driving assembly is used to drive the connecting sleeve to rotate on the fixed shaft, so that the clamping piece on the connecting arm moves into the injection molding machine to clamp the plastic barrel, and then the driving assembly is used to drive the connecting sleeve to rotate in the opposite direction on the fixed shaft, thereby driving the clamping piece with the plastic barrel to be moved out of the injection molding machine. Compared with the need for manpower to open the warehouse door to take out the material, it is ultimately conducive to the efficient unloading of the plastic barrel.

[0009] The present invention is further configured as follows: the clamping member includes two clamping arms respectively located on both sides of the end of the connecting arm and hinged at the middle part of the end of the connecting arm, a clamping plate arranged at one end of the clamping arm and used to press against the side wall of the plastic barrel, and a clamping spring arranged between the two clamping plates and connected to the two clamping plates at both ends.

[0010] By adopting the above technical solution, after the two clamps approach the plastic barrel, the clamping arm rotates and the clamping spring is stretched under the reaction force of the plastic barrel. Then the two clamps expand to allow the plastic barrel to be embedded, thereby completing the clamping of the plastic barrel under the action of the elastic restoring force of the clamping spring.

[0011] The present invention is further configured such that a guiding slope is provided at one end of the clamping plate away from the clamping arm.

[0012] By adopting the above technical solution, when the clamping plate approaches the plastic barrel, the guiding inclined surface on the clamping plate first contacts the plastic barrel, and then the plastic barrel can be clamped between the two clamping plates relatively smoothly along the guiding inclined surface.

[0013] The present invention is further configured as follows: the driving assembly includes a guide groove opened on the outer wall of the connecting sleeve, a fixed arm arranged on the base, a guide rod arranged at the upper end of the fixed arm and used to be embedded in the guide groove, and a pushing member arranged on the base and used to push the connecting sleeve back and forth on the fixed shaft. The guide groove includes a spiral groove extending along the circumference of the connecting sleeve and driving the connecting sleeve to rotate under the drive of the guide rod, and a first horizontal groove located at one end of the spiral groove and driven by the guide rod to enable the clamping member on the connecting sleeve to clamp the plastic barrel.

[0014] By adopting the above technical solution, the pusher drives the connecting sleeve to move, and at the same time, the guide rod on the fixed arm is embedded in the guide groove on the outer wall of the connecting sleeve. When the guide rod is located in the spiral groove, the connecting sleeve can move horizontally along the fixed axis and rotate circumferentially as the pusher pushes it. When the guide rod is located in the first horizontal groove, the connecting sleeve can move horizontally along the fixed axis as the pusher pushes it.

[0015] When the guide rod is located in the spiral groove, the connecting arm of the connecting sleeve rotates and moves horizontally to move toward one side of the plastic barrel. When the guide rod leaves the spiral groove and enters the first horizontal groove, the clamping piece on the connecting arm can be aligned with the plastic barrel. Then the guide rod moves in the first horizontal groove. At this time, the connecting sleeve can drive the clamping piece to move toward the side close to the plastic barrel. Then the clamping plate can abut against the plastic barrel and expand, thereby completing the clamping of the plastic barrel.

[0016] Then the guide rod moves in the opposite direction in the first horizontal groove, so that the clamping part removes the plastic barrel from the mold module of the injection molding machine; and after the guide rod moves in the opposite direction from the first water groove to the spiral groove, the connecting arm of the connecting sleeve rotates and moves horizontally to detach from the injection molding machine.

[0017] The present invention is further configured as follows: a pushing platform is provided at the end of the clamping arm away from the clamping plate, a unloading arm is provided at the end of the fixed shaft away from the base, and a push rod is provided on the unloading arm for abutting against the pushing platform. The guide groove also includes a second horizontal groove located at the end of the spiral groove away from the first horizontal groove and driven by the guide rod to move the clamping arm toward the side of the push rod.

[0018] By adopting the above technical solution, when the guide rod moves from the spiral groove to the second horizontal groove, the clamping piece on the connecting arm can be aligned with the unloading arm, and then the guide rod moves in the second horizontal groove. At this time, the connecting sleeve can drive the clamping piece to move toward the side close to the unloading arm, and then the pushing platforms on the two clamping arms can contact the push rod on the unloading arm. Under the action of the push rod, the clamping arm rotates to expand the two clamps. At this time, the plastic barrel between the two clamps can fall under the action of its own gravity.

[0019] The present invention is further configured as follows: a connecting rod is provided on the lower side of the discharge arm away from the fixed shaft, and a turning rod is provided at the end of the connecting rod away from the discharge arm for contacting the lower side of the plastic barrel and allowing the plastic barrel to fall downward after turning over.

[0020] By adopting the above technical solution, when the plastic barrel between the two clamping plates falls under its own gravity, the plastic barrel hits the turning rod, so the plastic barrel will first turn over and then fall, which is conducive to the stacking of multiple plastic barrels.

[0021] The present invention is further configured as follows: a stacking and storage platform for stacking multiple plastic barrels is provided on the ground below the turning rod.

[0022] By adopting the above technical solution, multiple plastic barrels can be stacked using the stacking and storage platform below the flip rod.

[0023] The present invention is further configured as follows: a guide wheel embedded in the guide groove is rotatably connected to the guide rod.

[0024] By adopting the above technical solution, the guide rod is embedded in the guide groove using a guide wheel. At this time, rolling friction can occur between the guide wheel and the inner wall of the guide groove. Compared with sliding friction, the friction force of rolling friction is smaller, which ultimately facilitates the smooth sliding of the guide rod along the guide groove.

[0025] The present invention is further configured as follows: the pushing member includes a dovetail groove opened on the base and extending in a direction parallel to the extending direction of the fixed axis, a dovetail slider embedded in the dovetail groove, a connecting platform arranged on the upper side of the dovetail slider, a connecting groove opened on the upper side of the connecting platform, a ring platform fixed on the circumferential side of the end of the connecting sleeve and with a side for embedding in the connecting groove, and a thrust cylinder arranged on the base and with the piston rod end connected to the dovetail slider.

[0026] By adopting the above technical solution, the thrust cylinder is used to drive the dovetail slider to move back and forth along the dovetail slot. At the same time, since the connecting platform on the dovetail slider uses the connecting slot for the ring platform on the connecting sleeve to be embedded, the movement of the dovetail slider can drive the connecting sleeve to move. At the same time, the ring platform can rotate circumferentially in the connecting slot, which makes it convenient for the connecting sleeve to rotate circumferentially while moving axially.

[0027] The beneficial effects of the present invention are as follows: when unloading a plastic barrel from an injection molding machine, a thrust cylinder is first used to drive the connecting sleeve to move via a dovetail slider, wherein when the guide rod is located in the spiral groove, the connecting arm of the connecting sleeve rotates and moves horizontally to approach one side of the plastic barrel; when the guide rod leaves the spiral groove and enters the first horizontal groove, the clamping piece on the connecting arm can be aligned with the plastic barrel; then the guide rod moves in the first horizontal groove, at which time the connecting sleeve can drive the clamping piece to move toward the side close to the plastic barrel, and then the guiding inclined surface of the clamping plate can abut against the plastic barrel, and the two clamping plates can expand, thereby completing the clamping of the plastic barrel;

[0028] Then, the thrust cylinder retracts, and the guide rod moves in the opposite direction in the first horizontal groove, so that the clamping member removes the plastic barrel from the mold module of the injection molding machine. After the guide rod moves in the opposite direction from the first water groove to the spiral groove, the connecting arm of the connecting sleeve rotates and moves horizontally, and then the plastic barrel can be separated from the injection molding machine.

[0029] When the guide rod moves from the spiral groove to the second horizontal groove, the clamping piece on the connecting arm can be aligned with the discharge arm, and then the guide rod moves in the second horizontal groove. At this time, the connecting sleeve can drive the clamping piece to move toward the side close to the discharge arm, and then the pushing platforms on the two clamping arms can abut against the push rod on the discharge arm. Under the action of the push rod, the clamping arm rotates to expand the two clamping plates. At this time, the plastic barrel between the two clamping plates can fall under the action of its own gravity; and because the plastic barrel abuts against the flip rod, the plastic barrel will flip over before falling, which is conducive to stacking multiple plastic barrels on the stacking and storage table;

[0030] By rotating and moving the connecting sleeve back and forth in this way, multiple plastic barrels can be unloaded. Compared with the need for manpower to open the warehouse door to take out the materials, it is ultimately conducive to the efficient unloading of the plastic barrels. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a schematic structural diagram of the present invention when combined with an injection molding machine.

[0033] Figure 2 This is a schematic structural diagram of the present invention, in which the guide rod is located in the first horizontal groove and the clamping member clamps the plastic barrel;

[0034] Figure 3 It is an enlarged structural diagram of the connecting arm and the clamping member in the present invention;

[0035] Figure 4 yes Figure 2 An enlarged view of the local structure of the middle connecting sleeve, guide groove, and guide rod;

[0036] Figure 5 This is an enlarged view of the local structure of the connection relationship between the connecting sleeve, the guide groove and the pushing member in the present invention;

[0037] Figure 6 This is a structural plan view of the present invention, where the guide rod is located in the second horizontal groove and the clamping arm in the clamping member abuts against the push rod.

[0038] In the figure, 1. base; 11. fixed shaft; 2. connecting sleeve; 21. connecting arm; 3. clamping member; 31. clamping arm; 311. pushing platform; 32. clamping plate; 321. guide slope; 33. clamping spring; 4. driving assembly; 41. guide groove; 411. spiral groove; 412. first horizontal groove; 413. second horizontal groove; 42. fixed arm; 43. guide rod; 431. guide wheel; 44. pushing member; 441. dovetail slide; 442. dovetail slider; 443. connecting platform; 444. connecting groove; 445. ring platform; 446. thrust cylinder; 5. unloading arm; 51. push rod; 52. connecting rod; 521. flip rod; 6. stacking storage platform. DETAILED DESCRIPTION

[0039] The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0040] A blanking fixture for an injection molding machine, referring to Figure 1 、 Figure 2 、 Figure 3 The blanking fixture of the injection molding machine includes a base 1, which is located on one side of the mold module of the injection molding machine and is L-shaped. A fixed shaft 11 is provided on the upper side of the base 1, wherein one end of the fixed shaft 11 is fixed to the upper side of the base 1 by a bolt and extends in the horizontal direction; a connecting sleeve 2 is provided on the fixed shaft 11, and a connecting arm 21 is welded to one side of the connecting sleeve 2, and a clamping piece 3 for clamping a plastic barrel is provided at the end of the connecting arm 21 away from the connecting sleeve 2. The clamping piece 3 It includes a clamping arm 31, a clamping plate 32 and a clamping spring 33, wherein two clamping arms 31 are provided and are respectively located on both sides of the end of the connecting arm 21, and the middle part of the clamping arm 31 is hinged to the end of the connecting arm 21. At the same time, the clamping plate 32 is integrally arranged at one end of the clamping arm 31 and is used to press against the side wall of the plastic barrel, and a guide slope 321 is provided at the end of the clamping plate 32 away from the clamping arm 31, and the clamping spring 33 is arranged between the two clamping plates 32 and its two ends are respectively welded to the two clamping plates 32.

[0041] Reference Figure 2 、 Figure 4 、 Figure 5A driving assembly 4 is also provided between the connecting sleeve 2 and the base 1. The driving assembly 4 is used to drive the connecting sleeve 2 to move so that the clamping member 3 can take out the plastic barrel in the injection molding machine. The driving assembly 4 includes a guide groove 41, a fixed arm 42, a guide rod 43 and a pusher 44. The guide groove 41 is provided on the outer wall of the connecting sleeve 2, and the guide groove 41 includes a spiral groove 411, a first horizontal groove 412 and a second horizontal groove 413. At the same time, the spiral groove 411 is located at the middle outer wall of the connecting sleeve 2 and extends spirally along the circumference of the connecting sleeve 2, and the spiral groove The projected length of 411 on the cross section of the connecting sleeve 2 is half the outer diameter length of the connecting sleeve 2, and the first horizontal groove 412 is located at one end of the spiral groove 411 and the extension direction is parallel to the extension direction of the connecting sleeve 2, wherein the second horizontal groove 413 is located at the end of the spiral groove 411 away from the first horizontal groove 412 and the extension direction is parallel to the extension direction of the connecting sleeve 2; at the same time, the lower end of the fixed arm 42 is welded to the base 1, and the guide rod 43 is welded to the upper end of the fixed arm 42, and the guide rod 43 is rotatably connected to the guide wheel 431 embedded in the guide groove 41 through a bearing.

[0042] Reference Figure 2 、 Figure 5 The pushing member 44 is arranged on the base 1 and is used to push the connecting sleeve 2 back and forth on the fixed shaft 11. The pushing member 44 includes a dovetail groove 441, a dovetail slider 442, a connecting platform 443, a connecting groove 444, a ring platform 445, and a thrust cylinder 446. The dovetail groove 441 is opened on the base 1 and the extension direction is parallel to the extension direction of the fixed shaft 11, and the dovetail slider 442 is embedded in the dovetail groove 441. At the same time, the connecting platform 443 is integrally arranged on the upper side of the dovetail slider 442, wherein the connecting groove 444 is opened on the upper side of the connecting platform 443, and the ring platform 445 is integrally arranged on the circumference of the end of the connecting sleeve 2 and the side is used to be embedded in the connecting groove 444. At the same time, the thrust cylinder 446 is fixed to the base 1 by bolts, and the end of the piston rod is connected to the dovetail slider 442 by bolts.

[0043] Reference Figure 2 、 Figure 6 The end of the clamping arm 31 away from the clamping plate 32 is also provided with a pushing platform 311, and the end of the fixed shaft 11 away from the base 1 is fixed with a unloading arm 5 by bolts, wherein the end of the unloading arm 5 away from the fixed shaft 11 is fixed with a push rod 51, and the push rod 51 can be used to contact the pushing platform 311; at the same time, a connecting rod 52 is welded on the lower side of the end of the unloading arm 5 away from the fixed shaft 11, and a flip rod 521 is welded at the end of the connecting rod 52 away from the unloading arm 5, and the cross-section of the flip rod 521 is circular, and the flip rod 521 can be used to contact the lower side of the plastic barrel and allow the plastic barrel to flip and fall downward, wherein a stacking storage platform 6 for stacking multiple plastic barrels is placed on the ground below the flip rod 521.

[0044] Principle: When unloading a plastic barrel from an injection molding machine, the piston rod of the thrust cylinder 446 is first retracted to drive the connecting sleeve 2 to move through the dovetail slider 442, wherein the guide rod 43 is located in the spiral groove 411, and the connecting arm 21 of the connecting sleeve 2 rotates and moves horizontally to approach one side of the plastic barrel. When the guide rod 43 disengages from the spiral groove 411 and enters the first horizontal groove 412, the clamping member 3 on the connecting arm 21 can be aligned with the plastic barrel; then the guide rod 43 moves in the first horizontal groove 412, at this time the connecting sleeve 2 can drive the clamping member 3 to move toward the side close to the plastic barrel, and then the guide inclined surface 321 of the clamping plate 32 can contact the plastic barrel, and the two clamping plates 32 expand, thereby completing the clamping of the plastic barrel.

[0045] Then the piston rod of the thrust cylinder 446 is extended, and the guide rod 43 moves in the opposite direction in the first horizontal groove 412, so that the clamping part 3 removes the plastic barrel from the mold module of the injection molding machine; and after the guide rod 43 moves in the opposite direction from the first water groove to the spiral groove 411, the connecting arm 21 of the connecting sleeve 2 rotates and moves horizontally to be detached from the injection molding machine.

[0046] When the guide rod 43 moves from the spiral groove 411 to the second horizontal groove 413, the clamping part 3 on the connecting arm 21 can be aligned with the unloading arm 5, and then the guide rod 43 moves in the second horizontal groove 413. At this time, the connecting sleeve 2 can drive the clamping part 3 to move toward the side close to the unloading arm 5, and then the pushing platform 311 on the two clamping arms 31 can abut against the push rod 51 on the unloading arm 5. Under the action of the push rod 51, the clamping arm 31 rotates to expand the two clamping plates 32. At this time, the plastic barrel between the two clamping plates 32 can fall under the action of its own gravity; and because the plastic barrel abuts against the flip rod 521, the plastic barrel will be flipped first and then fall, which is conducive to stacking multiple plastic barrels on the stacking storage table 6.

[0047] By rotating and moving the connecting sleeve 2 back and forth in this way, multiple plastic barrels can be unloaded. Compared with the method of opening the warehouse door manually to take out the materials, this is ultimately conducive to the efficient unloading of the plastic barrels.

Claims

1. A blanking fixture for an injection molding machine, characterized in that: The invention comprises a base (1) located on one side of a mold module of an injection molding machine, wherein the base (1) is L-shaped and a fixed shaft (11) extending in a horizontal direction is fixed on the upper side, a connecting sleeve (2) is provided on the fixed shaft (11), a connecting arm (21) is provided on one side of the connecting sleeve (2), a clamping member (3) for clamping a plastic barrel is provided at one end of the connecting arm (21) away from the connecting sleeve (2), and a clamping member (3) for clamping a plastic barrel is provided between the connecting sleeve (2) and the base (1) for driving the connecting sleeve (2) to move so that the clamping member (3) can clamp the plastic barrel in the injection molding machine. The driving assembly (4) for clamping the barrel out; the clamping member (3) comprises two clamping arms (31) respectively located on both sides of the end of the connecting arm (21) and hinged at the middle of the end of the connecting arm (21); a clamping plate (32) provided at one end of the clamping arm (31) and used to press against the side wall of the plastic barrel; a clamping spring (33) provided between the two clamping plates (32) and connected at both ends to the two clamping plates (32); the driving assembly (4) comprises a guide groove (41) provided on the outer wall of the connecting sleeve (2); a fixing arm (41) provided on the base (1); 2), a guide rod (43) provided at the upper end of the fixed arm (42) and used to be embedded in the guide groove (41), a pushing member (44) provided on the base (1) and used to push the connecting sleeve (2) back and forth on the fixed shaft (11), the guide groove (41) including a spiral groove (411) extending along the circumference of the connecting sleeve (2) and driving the guide rod (43) to rotate the connecting sleeve (2), and a first horizontal clamping member (3) located at one end of the spiral groove (411) and driving the guide rod (43) to clamp the plastic barrel on the connecting sleeve (2). The guide groove (412) further comprises a second horizontal groove (413) which is located at one end of the spiral groove (411) away from the first horizontal groove (412) and which is driven by the guide rod (43) to move the clamping arm (31) toward the side of the push rod (51).

2. The blanking fixture for an injection molding machine according to claim 1, characterized in that: A guiding inclined surface (321) is provided at one end of the clamping plate (32) away from the clamping arm (31).

3. The blanking fixture for an injection molding machine according to claim 1, characterized in that: A connecting rod (52) is provided on the lower side of one end of the discharge arm (5) away from the fixed shaft (11), and a turning rod (521) is provided on the end of the connecting rod (52) away from the discharge arm (5) for contacting the lower side of the plastic barrel and allowing the plastic barrel to fall downward after turning over.

4. The blanking fixture for an injection molding machine according to claim 3, characterized in that: A stacking and storage platform (6) for stacking multiple plastic barrels is provided on the ground below the turning rod (521).

5. The blanking fixture for an injection molding machine according to claim 1, characterized in that: The guide rod (43) is rotatably connected to a guide wheel (431) embedded in the guide groove (41).

6. The blanking fixture for an injection molding machine according to claim 1, characterized in that: The pushing member (44) includes a dovetail slot (441) provided on the base (1) and extending in a direction parallel to the extending direction of the fixed shaft (11), a dovetail slider (442) embedded in the dovetail slot (441), a connecting platform (443) provided on the upper side of the dovetail slider (442), a connecting groove (444) provided on the upper side of the connecting platform (443), a ring platform (445) fixed on the circumference of the end of the connecting sleeve (2) and having a side for embedding in the connecting groove (444), and a thrust cylinder (446) provided on the base (1) and having a piston rod end connected to the dovetail slider (442).

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