A new plastic product forming station

Abstract

The utility model relates to a novel plastic product forming workstation, which comprises a stand, a first die holder and a second die holder, the first die holder is slidably installed on the stand, a first die pressing power source is installed on the stand, the first die pressing power source is in transmission connection with the first die holder through a first transmission mechanism, and the first transmission mechanism comprises a first transmission shaft and two first transmission assemblies, each first transmission assembly comprises a first connecting rod, a first transmission arm and a first connecting seat, the first transmission shaft is transversely rotatably installed on the stand, the upper end of the first connecting rod is fixedly connected with the first transmission shaft, the first connecting rod is hingedly connected with the first transmission arm, the first transmission arm is hingedly connected with the first connecting seat, the first connecting seat is connected with the first die holder, and the first die pressing power source is in transmission connection with the first transmission shaft. The novel plastic product forming workstation is improved in transmission structure, is more stable in operation and is more convenient to maintain.

Description

Technical Field

[0001] This utility model relates to a press, specifically a press for producing plastic products. Background Technology

[0002] Mold forming devices typically used for molding plastic products include a base, an upper mold, a lower mold, and a molding power source. Driven by the molding power source, the lower and upper molds close, forming plastic products from plastic sheets. However, in existing mold forming power sources, the output shaft is connected to an eccentric wheel. The output shaft drives the eccentric wheel to rotate, which in turn drives the lower and upper molds to close. Because the output shaft and the eccentric wheel are perpendicular, the eccentric wheel exerts a radial force directly on the output shaft, causing the power source to rocker and affecting stability. To address this, a utility model patent application was filed entitled "A High-Stability Mold Forming Device" (Publication No. CN220095511U). This device improves the transmission mechanism to make its movement more stable. However, in this type of device, the molding power source and transmission arm are concentrated at the bottom of the base, making the bottom space of the equipment very small and inconvenient for maintenance. Furthermore, the output shaft of the molding power source is mounted on a small support. When the output shaft is in operation, the radial force acts on the small support, making the support prone to loosening and malfunction. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, this utility model innovatively provides a new type of plastic product molding workstation with a more stable structure.

[0004] This novel plastic product molding workstation includes a frame, a first mold base, and a second mold base. Both the first and second mold bases are mounted on the frame and arranged vertically. The first mold base is slidably mounted on the frame. A first molding power source is mounted on the frame and is connected to the first mold base via a first transmission mechanism. The first transmission mechanism includes a first transmission shaft and two first transmission components (left and right). Each first transmission component includes a first connecting rod, a first transmission arm, and a first connecting seat. The first transmission shaft is rotatably mounted laterally on the frame. The upper end of the first connecting rod is fixedly connected to the first transmission shaft, and the lower end of the first connecting rod is hinged to the upper end of the first transmission arm. The lower end of the first transmission arm is hinged to the first connecting seat, which is connected to the first mold base. The first molding power source is connected to the first transmission shaft.

[0005] The first mold base is provided with two first adjusting sprocket sleeves corresponding to the left and right first transmission components. The outer circumference of the first adjusting sprocket sleeve is removably mounted on the first mold base through bearings. The lower end of the first connecting seat is provided with a threaded post. The threaded post is threadedly connected to the inner wall of the first adjusting sprocket sleeve. The first adjusting sprocket sleeve is provided with a first adjusting sprocket. The left and right first adjusting sprockets are wound with a first adjusting chain. The first adjusting chain is drivenly connected to the first adjusting motor.

[0006] A first pull-up head mechanism is installed on the first mold base. The first pull-up head mechanism includes a first pull-up head, a first pull-up power source, a first pull-up transmission seat, a first pull-up gear, and a first pull-up tooth column. The first pull-up transmission seat is installed on the first mold base. The first pull-up tooth column is installed on the first pull-up transmission seat in a vertically movable manner. The first pull-up gear is rotatably installed on the first pull-up transmission seat. The first pull-up gear meshes with the first pull-up tooth column. The first pull-up power source is installed on the first pull-up transmission seat and is connected to the first pull-up gear in a transmission connection. The first pull-up tooth column passes through the first mold base and is connected to the first pull-up head.

[0007] The outer side of the stand is equipped with a first guide rail extending vertically, and a first slider is connected to the first mold base. The first slider is slidably mounted on the first guide rail.

[0008] The second mold base is slidably mounted on the upright frame, and the upright frame is equipped with a second molding power source. The second molding power source is connected to the second mold base through a second transmission mechanism, which includes a second transmission shaft and two second transmission components on the left and right.

[0009] The present invention provides a novel plastic product molding workstation, which improves the transmission structure to make its operation more stable and easier to maintain. Attached Figure Description

[0010] Figure 1 This is a perspective view of the present invention; Figure 2 This is a connection diagram of the first adjusting sprocket sleeve and the first connecting seat; Figure 3 This is a schematic diagram of the first pull-head mechanism; Figure 4 This is a structural diagram of the upper mold, lower mold, and first pull-up head. Detailed Implementation

[0011] like Figure 1 As shown, this new type of plastic product molding workstation includes a stand 1, a first mold base 2, and a second mold base 3, as follows: Figure 4As shown, the upper mold A is installed on the first mold base 2, and the lower mold B is installed on the second mold base 3. The first mold base 2 and the second mold base 3 are both installed on the stand 1 and are arranged vertically. The first mold base 2 can be slidably installed on the stand 1. The stand 1 is equipped with a first molding power source 6. The first molding power source 6 is connected to the first mold base 2 through a first transmission mechanism. Driven by the first molding power source 6, the first transmission mechanism drives the first mold base 2 to move up and down, so that the upper mold A and the lower mold B can achieve mold closing and mold opening.

[0012] like Figure 1 As shown, the first transmission mechanism includes a first transmission shaft 4 and two first transmission components 5 on the left and right. Each first transmission component 5 includes a first connecting rod 51, a first transmission arm 52, and a first connecting seat 53. The first transmission shaft 4 is rotatably mounted laterally on the stand 1 (horizontally mounted on the stand 1 via bearings). The upper end of the first connecting rod 51 is fixedly connected to the first transmission shaft 4, and the lower end of the first connecting rod 51 is hinged to the upper end of the first transmission arm 52. The lower end of the first transmission arm 52 is hinged to the first connecting seat 53. The first connecting seat 53 is connected to the first mold base 2. The first molding power source 6 is mounted on the stand 1 and is connected to the first transmission shaft 4 for transmission. During operation, the first molding power source 6 drives the first transmission shaft 4 to rotate, which in turn drives the first connecting rod 51 to swing (swinging back and forth at a certain angle). The first connecting rod 51 then pulls the first transmission arm 52 to move up and down. The first transmission arm 52 drives the first mold base 2 to move up and down via the first connecting seat 53, thus enabling the upper mold A to move up and down. Since the first drive shaft 4 is directly mounted horizontally on the stand 1, the radial force on the first drive shaft 4 will act on the stand, and the stand is a main structure, so the structure is more stable. Moreover, after the first drive shaft 4 is mounted horizontally on the stand 1, the first molding power source 6 can be installed on the side of the stand 1. This not only frees up space above the stand, but also makes it easier to install the first molding power source 6. In addition, this method can free up a large space between the two first drive components 5, so that there is enough space on the first mold base 2 for installing the first pull head mechanism 9.

[0013] To facilitate the adjustment of the vertical position of the first mold base 2 to accommodate the installation of different molds, such as... Figure 1 As shown, the first mold base 2 is provided with two first adjusting sprocket sleeves 54 corresponding to the left and right first transmission components 5, as follows: Figure 2As shown, the outer circumference of the first adjusting sprocket sleeve 54 is removably mounted on the first mold base 2 via bearings. The lower end of the first connecting seat 53 is provided with a threaded post 531, which is threadedly connected to the inner wall of the first adjusting sprocket sleeve 54. The first adjusting sprocket sleeve 54 is provided with a first adjusting sprocket 55, and a first adjusting chain is wound around the two first adjusting sprockets 55 on the left and right sides. The first adjusting chain is driven by a first adjusting motor (the first adjusting chain and the first adjusting motor are not shown). When it is necessary to adjust the vertical position of the first mold base 2, the first adjusting motor drives the first adjusting chain to rotate, and the first adjusting chain synchronously drives the two first adjusting sprockets 55 on the left and right sides to rotate. Since the first adjusting sprockets 55 and the first adjusting sprocket sleeve 54 are set together (integral structure or fixed connection), the first adjusting sprocket sleeve 54 rotates on the first mold base 2. Since the threaded post 531 at the lower end of the first connecting seat 53 is threadedly connected to the first adjusting sprocket sleeve 54, the first connecting seat 53 moves up and down, and the vertical position of the first mold base 2 can be adjusted.

[0014] Some plastic products are quite deep, such as disposable plastic bowls and disposable measuring cups. These products are formed by pressing them together using a mold (creating a closed cavity), and then blowing air into the cavity to shape them using air pressure. However, this air pressure can cause the bottom of the plastic product to be overstretched, becoming very thin and affecting product quality. To solve this problem, such as... Figure 1 As shown, a first pull-head mechanism 9 is installed on the first mold base 2, such as... Figure 3 As shown, the first pull-up head mechanism 9 includes a first pull-up head 94, a first pull-up power source 93, a first pull-up transmission seat 90, a first pull-up gear 92, and a first pull-up toothed column 91. The first pull-up transmission seat 90 is mounted on the first mold base 2. The first pull-up toothed column 91 is mounted on the first pull-up transmission seat 90 in a vertically movable manner. The first pull-up gear 92 is rotatably mounted on the first pull-up transmission seat 90 and meshes with the first pull-up toothed column 91. The first pull-up power source 93 is mounted on the first pull-up transmission seat 90 and is connected to the first pull-up gear 92 in a transmission connection. The first pull-up toothed column 91 passes through the first mold base 2 and is connected to the first pull-up head 94. Figure 4 As shown, when the upper mold A and the lower mold B are closed, the first pull-assist power source 93 drives the first pull-assist gear 92 to rotate. The first pull-assist gear 92 drives the first pull-assist pinion 91 to move downward. The first pull-assist pinion 91 then drives the first pull-assist head 94 to press down, so that the first pull-assist head 94 is pressed into the lower mold B to form the blank of the plastic product. Due to the contact of the first pull-assist head 94 and the fact that the first pull-assist head 94 is cold, the hot blank of the plastic product can be locally shaped. This ensures that the bottom of the plastic product maintains a uniform thickness during the subsequent air pressure molding process, resulting in better quality of the finished plastic product.

[0015] like Figure 1As shown, a vertically extending first guide rail 7 is installed on the outer side of the stand 1, and a first slider 8 is connected to the first mold base 2. The first slider 8 is slidably mounted on the first guide rail 7. When the first mold base 2 moves up and down, the first slider 8 slides on the first guide rail 7. Since the first guide rail 7 is installed on the outer side of the stand 1, it is more convenient for workers to add grease to the guide rail.

[0016] Finally, it is worth mentioning that the second mold base 3 is slidably mounted on the upright frame 1. The upright frame 1 is equipped with an upper second molding power source 10, which is connected to the second mold base 3 via a second transmission mechanism. The second transmission mechanism includes a second transmission shaft and two left and right second transmission components. The second transmission mechanism has the same structure as the first transmission mechanism, except that they are symmetrically arranged vertically, which will not be elaborated further here. Driven by the second molding power source 10, the second mold base 3 can move up and down, thereby driving the lower mold B to move up and down.

Claims

1. A novel plastic product molding workstation, comprising a frame (1), a first mold base (2), and a second mold base (3), wherein the first mold base (2) and the second mold base (3) are both mounted on the frame (1) and arranged vertically, the first mold base (2) being slidably mounted on the frame (1), and a first molding power source (6) is mounted on the frame (1), the first molding power source (6) being connected to the first mold base (2) via a first transmission mechanism, characterized in that: The first transmission mechanism includes a first transmission shaft (4) and two first transmission components (5) on the left and right. Each first transmission component (5) includes a first connecting rod (51), a first transmission arm (52) and a first connecting seat (53). The first transmission shaft (4) is rotatably mounted on the stand (1) laterally. The upper end of the first connecting rod (51) is fixedly connected to the first transmission shaft (4). The lower end of the first connecting rod (51) is hinged to the upper end of the first transmission arm (52). The lower end of the first transmission arm (52) is hinged to the first connecting seat (53). The first connecting seat (53) is connected to the first mold base (2). The first molding power source (6) is connected to the first transmission shaft (4) in a transmission connection.

2. The novel plastic product molding workstation according to claim 1, characterized in that: The first mold base (2) is provided with two first adjusting sprocket sleeves (54) corresponding to the left and right first transmission components (5). The outer periphery of the first adjusting sprocket sleeve (54) is mounted on the first mold base (2) by bearings. The lower end of the first connecting seat (53) is provided with a threaded post (531). The threaded post (531) is threadedly connected to the inner wall of the first adjusting sprocket sleeve (54). The first adjusting sprocket sleeve (54) is provided with a first adjusting sprocket (55). The left and right first adjusting sprockets (55) are wound with a first adjusting chain. The first adjusting chain is connected to the first adjusting motor.

3. The novel plastic product molding workstation according to claim 1, characterized in that: A first pull head mechanism (9) is installed on the first mold base (2). The first pull head mechanism (9) includes a first pull head (94), a first pull power source (93), a first pull transmission seat (90), a first pull gear (92), and a first pull pinion (91). The first pull transmission seat (90) is installed on the first mold base (2). The first pull pinion (91) is installed on the first pull transmission seat (90) in a vertically movable manner. The first pull gear (92) is rotatably installed on the first pull transmission seat (90). The first pull gear (92) meshes with the first pull pinion (91). The first pull power source (93) is installed on the first pull transmission seat (90) and is connected to the first pull gear (92) in a transmission connection. The first pull pinion (91) passes through the first mold base (2) and is connected to the first pull head (94).

4. The novel plastic product molding workstation according to claim 1, characterized in that: The outer side of the stand (1) is equipped with a first guide rail (7) extending vertically, and a first slider (8) is connected to the first mold base (2). The first slider (8) is slidably disposed on the first guide rail (7).

5. The novel plastic product molding workstation according to claim 1, characterized in that: The second mold base (3) is slidably mounted on the stand (1). The stand (1) is equipped with an upper second molding power source (10). The second molding power source (10) is connected to the second mold base (3) through a second transmission mechanism. The second transmission mechanism includes a second transmission shaft and two second transmission components on the left and right.

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