Plastic product punching mechanism

Abstract

The plastic product punching mechanism includes a mold installation device arranged on the front and rear sides of the mold platform, and the mold installation device includes a left clamping plate device, a top clamping device and a right clamping plate device; the left clamping plate device includes a hinged left clamping plate, and the right clamping plate device includes a hinged right clamping plate; the top clamping device includes a slide bar, the slide bar is connected to the mounting seat, the mounting seat is located between the left clamping plate device and the right clamping plate device, the inner end of the slide bar is the top, the outer end of the slide bar is connected to the slide bar sliding transmission device, the mounting seat is connected to the transverse track, a nut or a thread hole is arranged on the mounting seat, the nut or the thread hole is connected to a transverse transmission screw rod, and the transverse transmission screw rod is connected to the driving motor. The top clamping device clamps the mold from the front and rear sides, and the movement of the slide bar of the top clamping device can adjust the position of the mold, and the punching mold can be quickly clamped and fixed on the mold platform in cooperation with the left clamping plate device and the right clamping plate device, and the mold position in the punching mechanism can be quickly fine-tuned so as to be able to fine-tune the tool and mold with the mold in the molding mechanism.

Description

Technical Field

[0001] The invention relates to a plastic product thermoforming machine, in particular to a plastic product punching mechanism thereof. Background Art

[0002] In the thermoforming machine for plastic products (such as plastic boxes and plastic cups), the sheet is heated by a preheating cabinet and an oven. After the sheet is heated, it enters the forming device of the heating forming mechanism for forming. After the sheet is formed, it enters the punching mechanism for punching. The punching mechanism has a die table (divided into an upper die table and a lower die table) that is set on a guide column and lifted and matched. The die table is equipped with a die for punching (divided into an upper die and a lower die). The corresponding mold needs to be installed on the corresponding die table. Specifically, the upper die table is equipped with an upper mold, and the lower die table is equipped with a lower mold. The upper and lower die tables are lifted and matched so that the upper and lower molds for punching can be matched. The molds are matched to punch the formed sheet. The position of the die of the punching mechanism needs to correspond to the position of the mold of the previous forming mechanism one by one to perform accurate punching. Summary of the invention

[0003] In view of the technical problems existing in the background technology, the technical problem solved by the present invention is to provide a plastic product punching mechanism that can facilitate the installation of the mold on the mold table and the adjustment of the mold position.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a plastic product punching mechanism, comprising a mold mounting device arranged at the front side and the rear side of the mold platform, characterized in that: the mold mounting device comprises a left clamping plate device, a top clamping device and a right clamping plate device; the left clamping plate device comprises a left clamping plate, the left clamping plate is hinged on the left mounting plate, the left mounting plate is connected to the mold platform, one end of the left clamping plate is the left clamping part of the mold, and the other end of the left clamping plate is connected to the left clamping plate swing transmission device; the right clamping plate device comprises a right clamping plate, the right ... and the left clamping plate is hinged on the left mounting plate. It is connected to the right mounting plate, the right mounting plate is connected to the mold platform, one end of the right clamping plate is the right clamping part of the mold, and the other end of the right clamping plate is connected to the right clamping plate swinging transmission device; the top clamping device includes a slide bar, the slide bar is connected to the mounting seat, the mounting seat is located between the left clamping plate device and the right clamping plate device, the inner end of the slide bar is the top, the outer end of the slide bar is connected to the slide bar sliding transmission device, the mounting seat is connected to the transverse track, a nut or a wire hole is provided on the mounting seat, the nut or the wire hole is connected with a transverse transmission screw rod, and the transverse transmission screw rod is transmission-connected to the drive motor.

[0005] The front and rear sides of the mold are provided with a top portion, and the front and rear sides of the mold are provided with a clamped left portion and a clamped right portion. Alternatively, the mold is provided with a mold mounting plate, and the front and rear sides of the mold mounting plate are provided with a top portion, respectively, and the front and rear sides of the mold mounting plate are provided with a clamped left portion and a clamped right portion.

[0006] The top is arranged as a groove, the left part and the right part are arranged as steps, and the step surfaces of the steps are also arranged with paneling.

[0007] The mounting seat is provided with a slideway, the slide bar is arranged on the slideway, and the left mounting plate and the right mounting plate are connected to form a total mounting plate.

[0008] The beneficial effect of the present invention is that the mold installation devices on the front and rear sides of the mold platform of the plastic product punching mechanism are composed of a left clamping device, a top clamping device and a right clamping device. The top clamping device clamps the mold from the front and rear sides, and the movement of the slide bar of the top clamping device can adjust the position of the mold. In conjunction with the left clamping device and the right clamping device, the punching mold can be quickly clamped and fixed on the mold platform, and the mold position in the punching mechanism can be quickly fine-tuned so that it can be fine-tuned with the knife and mold of the mold in the molding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The following describes the relevant details and working principles of the implementation mode and embodiments of the present invention in conjunction with the accompanying drawings.

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0011] Figure 2 It is a schematic diagram of the top structure of the present invention.

[0012] Figure 3 It is a front view structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0013] Referring to the accompanying drawings, the plastic product punching mechanism in this embodiment includes a mold mounting device 2, which is arranged on a mold platform 1, and the mold mounting device 2 is located at the front and rear sides of the mold platform 1. When the mold (i.e., the punching mold) is mounted on the mold platform, the mold mounting device is used to mount and fix the corresponding mold on the corresponding mold platform, and the mold mounting device fixes the mold at the front and rear sides of the mold platform.

[0014] The mold installation device 2 includes a left clamping plate device 3, a top clamping device 4 and a right clamping plate device 5. The top clamping device 4 supports the mold from the middle, and the left clamping plate device 3 and the right clamping plate device 5 clamp the supported mold from above on the left and right sides.

[0015] The left clamping plate device 3 includes a left clamping plate 31, which is hinged on the left mounting plate 32. The left clamping plate 31 can be hinged on the left mounting plate 32 through a hinge shaft to swing. The left mounting plate 32 is connected to the die table 1. One end of the left clamping plate is the left clamping part of the die, and the other end of the left clamping plate is connected to the left clamping plate swing transmission device 33. The left clamping plate swing transmission device 33 can use a cylinder or a motor as a power source. For example, in this embodiment, a cylinder is used, the cylinder body of the cylinder is hinged on the left mounting plate, and the piston rod of the cylinder is hinged to the left clamping plate. The left clamping plate is driven to swing on the left mounting plate through the left clamping plate swing transmission device, and the left clamping part of the die of the left clamping plate can press down to clamp the corresponding matching part of the die on the die table when swinging.

[0016] The right clamping plate device 5 includes a right clamping plate 51, which is hinged on the right mounting plate 52. The right clamping plate 51 can be hinged on the right mounting plate 52 through a hinge shaft to swing. The right mounting plate 52 is connected to the mold platform 1. One end of the right clamping plate 51 is the right clamping part of the mold, and the other end of the right clamping plate is connected to the right clamping plate swing transmission device 53. The right clamping plate swing transmission device 53 can use a cylinder or a motor as a power source. For example, in this embodiment, a cylinder is used, the cylinder body of the cylinder is hinged on the right mounting plate, and the piston rod of the cylinder is hinged to the right clamping plate. The right clamping plate is driven to swing on the right mounting plate through the right clamping plate swing transmission device, and the right clamping part of the mold of the right clamping plate can press down to clamp the corresponding matching part of the mold on the mold platform when swinging.

[0017] The top clamping device 4 includes a slide bar 41, which is connected to a mounting seat 42, and the mounting seat is provided for the slide bar to be displaced (such as sliding displacement) on it. The mounting seat is located between the left clamping plate device and the right clamping plate device, and the corresponding slide bar will also be located between the left clamping plate and the right clamping plate. The inner end of the slide bar 41 is the top, and the top is used to cooperate with the corresponding part of the mold. The top of the slide bar will be pressed against the corresponding matching part of the mold. The inner end is the end facing the center of the mold platform (i.e., the end facing the position where the mold is installed). The outer end of the slide bar (the other end relative to the inner end) is connected to the slide bar sliding transmission device 43, and the slide bar is driven by the slide bar sliding transmission device to move, and the slide bars on the front and rear sides slide back and forth on the corresponding mounting seats. For example, the inner end of the slide bar on the front side of the mold platform faces backward, and the inner end of the slide bar on the rear side of the mold platform faces forward. The slide bars on the front and rear sides of the mold platform move inward to cooperate with the corresponding matching part of the middle mold to clamp and fix it, and clamp the front and rear sides of the mold. In this embodiment, the mounting seat is provided with a slideway, and the slide bar is arranged on the slideway for sliding; the slideway can be in the form of a slide hole or a slide groove (such as a dovetail groove) or a slide rail, and the slideway allows the slide bar to slide stably.

[0018] The slider sliding transmission device 43 can be driven by a cylinder as a power source. In this embodiment, the slider sliding transmission device includes a first connecting rod and a second connecting rod, the first connecting rod is hinged on the mounting seat, the first connecting rod is hinged to the second connecting rod, the second connecting rod is hinged to the slider or the second connecting rod is hinged to the slider transmission rod (the slider transmission rod 9 is connected to the slider), and the second connecting rod is connected to a trigger handle 434, which is easy to use and easy to operate. As shown in the figure, the first connecting rod (using a straight arm connecting rod) has a first upper rod and a first lower rod, and the second connecting rod (using an L-shaped connecting rod) has a second upper rod and a second lower rod, the first upper rod is hinged to the second upper rod, and the first lower rod is hinged to the second lower rod. The trigger handle is manually rotated, and the second connecting rod rotates on the first connecting rod through the second connecting rod, driving the slider or the slider transmission rod to move forward and backward.

[0019] The left mounting plate and the right mounting plate may be arranged as a total mounting plate connected as one body, for example, a whole plate may be directly used as the total mounting plate.

[0020] The mounting seat 42 is connected to the transverse track, and the transverse track can be a guide rod or a linear guide rail or a slide groove, etc. The transverse track is for the mounting seat to move laterally (i.e., move left and right). A nut or a thread hole is provided on the mounting seat 42, and the nut or the thread hole is connected with a transverse transmission screw 44. The rotation of the transverse transmission screw will cooperate with the nut or the thread hole to drive the mounting seat to move laterally on the transverse track, and the left and right positions of the mounting seat can be adjusted, so that the left and right positions of the slide bar on the mounting seat can be adjusted. The transverse track and the transverse transmission screw can be correspondingly arranged on the left fixed seat 81 and the right fixed seat 82, and the left fixed seat and the right fixed seat are connected to the left mounting plate and the right mounting plate. Rotational supports (such as bearings) can also be configured on the left fixed seat and the right fixed seat to support the rotation of the transverse transmission screw.

[0021] The transverse transmission screw 44 is connected to the driving motor 45 (such as a servo motor) by transmission. In this embodiment, a reducer 46 can be arranged between the driving motor and the transverse transmission screw, and the transverse transmission screw 44 is driven to rotate by the driving motor 45. The left and right positions of the slider can be changed and adjusted. When the corresponding matching parts of the fixed mold are matched and supported, the position of the mold can be adjusted (left and right or offset), so as to achieve a one-to-one correspondence between the punching knife on the mold of the punching mechanism and the punching position of the plastic product after molding, that is, the position of the mold of the punching mechanism corresponds to the position of the mold of the previous molding mechanism, so that accurate punching can be performed. The rapid clamping and position adjustment movement of the mold of the punching mechanism can realize the fine-tuning of the knife and mold of the mold in the punching mechanism and the mold in the molding mechanism.

[0022] The installation position where the mold and the mold installation device cooperate can be set on the mold or on the mold installation plate 6.

[0023] The front and rear sides of the mold are both provided with a top portion, which cooperates with the slide bar, and the top portion is used to be inserted and supported by the end of the slide bar. The front and rear sides of the mold are both provided with a clamped left portion and a clamped right portion. The clamped left portion and the clamped right portion of the front side correspond to the left clamping plate and the right clamping plate of the front side respectively, and the clamped left portion and the clamped right portion of the rear side correspond to the left clamping plate and the right clamping plate of the rear side respectively. The clamped left portion and the clamped right portion will be clamped by the corresponding left clamping plate and the right clamping plate. This embodiment is not shown in the figure; or, referring to the accompanying drawings, the mold is equipped with a mold The mounting plate 6 is used to mount the mold on the mold mounting plate 6 (for example, by fasteners), and then the mold mounting plate 6 is mounted on the mold platform 1. The installation is more convenient. Different molds can be mounted on the mold platform through a unified mold mounting plate. The top 62 is set on the front and rear sides of the mold mounting plate 6 (for example, in the middle of the front and rear sides, which can balance the two ends) and cooperate with the corresponding slide bars. The clamped left part and the clamped right part are set on the front and rear sides of the mold mounting plate and cooperate with the corresponding left clamping plate and right clamping plate respectively.

[0024] The top of the clamp can be set as a groove, and there is a gap between the groove and the end of the slide bar for matching and adjustment. The lighter the overall weight of the mold, the faster the punching of the product. The mold mounting plate can be made of a lighter material (such as an aluminum plate) for higher efficiency. The left and right parts of the clamp are set as steps 61, and the step surface of the step is also provided with a panel 62. The panel can be made of a pressure-resistant and durable material (such as a steel plate) to prevent the step surface (i.e., the pressing surface) of the step from being damaged by the clamping due to long-term use.

[0025] The working principle of the present invention is that after the plastic product is formed by the molding mechanism, it enters the punching station of the plastic product punching mechanism. The position of the punching mold needs to correspond one-to-one with the position of the previous molding mold in order to perform accurate punching. During the verification of the mold alignment, the left clamping plate device and the right clamping plate device on the front and rear sides of the mold platform of the plastic product punching mechanism release the mold or the mold mounting plate connected to the mold, and the sliding bars of the top clamping device on the front and rear sides of the mold platform move inward to support the middle mold or the mold mounting plate connected to the mold. The left and right position adjustment of the sliding bar of the top clamping device can drive the mold or the mold mounting plate connected to the mold to adjust the rotation position and perform fine adjustment. After the mold alignment is completed, the clamping plate device and the right clamping plate device on the front and rear sides of the mold platform clamp the mold or the mold mounting plate connected to the mold, and the plastic product punching mechanism can perform punching work.

Claims

1. A plastic product punching mechanism, comprising a mold mounting device (2) arranged on the front side of a mold platform (1) and the rear side of the mold platform (1), characterized in that: The mold installation device (2) comprises a left clamping plate device (3), a top clamping device (4) and a right clamping plate device (5); The left clamping plate device (3) comprises a left clamping plate (31), the left clamping plate (31) is hinged on a left mounting plate (32), the left mounting plate (32) is connected to the mold platform (1), one end of the left clamping plate is a left clamping part of the mold, and the other end of the left clamping plate is connected to the left clamping plate swing transmission device (33); The right clamping plate device (5) comprises a right clamping plate (51), the right clamping plate (51) is hinged on a right mounting plate (52), the right mounting plate (52) is connected to the mold platform (1), one end of the right clamping plate is a right clamping part of the mold, and the other end of the right clamping plate is connected to the right clamping plate swing transmission device (53); The top clamping device (4) comprises a slide bar (41), the slide bar (41) is connected to a mounting seat (42), the mounting seat is located between the left clamping plate device and the right clamping plate device, the inner end of the slide bar (41) is the top, the outer end of the slide bar (41) is connected to a slide bar sliding transmission device (43), the mounting seat (42) is connected to the transverse track, a nut or a thread hole is provided on the mounting seat (42), the nut or the thread hole is connected to a transverse transmission screw rod (44), and the transverse transmission screw rod is transmission-connected to a drive motor (45).

2. The plastic product punching mechanism according to claim 1, characterized in that: The front side and the rear side of the mold are both provided with a clamped top portion, and the front side and the rear side of the mold are both provided with a clamped left portion and a clamped right portion.

3. The plastic product punching mechanism according to claim 1, characterized in that: The mold is equipped with a mold mounting plate (6), the front side and the rear side of the mold mounting plate are respectively provided with a clamped top portion, and the front side and the rear side of the mold mounting plate are both provided with a clamped left portion and a clamped right portion.

4. The plastic product punching mechanism according to claim 2 or 3, characterized in that: The top is arranged as a groove, the left part and the right part are arranged as steps, and the step surfaces of the steps are also arranged with paneling.

5. The plastic product punching mechanism according to claim 1, characterized in that: The mounting seat is provided with a slideway, the slide bar is arranged on the slideway, and the left mounting plate and the right mounting plate are a total mounting plate connected as one body.

Images