An upper die table driving structure of a vacuum thermoforming apparatus

Abstract

The utility model provides a kind of upper die table driving structure of vacuum blister forming equipment, comprising: installation platform, multiple connecting rods are slidably penetrated on installation platform, and at least two connecting rods are oppositely arranged on installation platform along the horizontal or vertical symmetry line of installation platform, upper die table is located on one end of multiple connecting rods, and below installation platform, top plate is located on the other end of multiple connecting rods, and driving assembly includes at least one driving part, two bearings, two bearing seats and two gears;Wherein, the outer wall of oppositely arranged two connecting rods is equipped with gear teeth that can be engaged with gear, so that two connecting rods are driven by two gears to rise or descend.In the utility model, gear and connecting rod realize gear rack drive, so as to realize the accurate and stable lifting of upper die table, while reducing the maintenance cost of equipment.

Description

Technical Field

[0001] This utility model relates to the field of plastic thermoforming equipment technology, specifically to an upper mold stage drive structure for a vacuum forming equipment. Background Technology

[0002] The furnace-type vacuum forming machine is one of the most commonly used plastic thermoforming vacuum forming equipment on the market. This equipment is used to heat various thermoplastic films or sheets through an electric furnace until the material softens. Then, the upper and lower molds are closed, and the material is adsorbed onto the surface of the mold to be shaped using the principle of vacuum forming. The material is cooled and shaped using the cooling channels of the mold itself and external cooling devices (such as cooling fans or spraying cooling water). The finished product is widely used in packaging, component shells, product logistics and turnover, etc.

[0003] Existing vacuum forming machines with movable furnaces primarily use their upper mold table lifting drive devices to assist in stretching or demolding the film material during vacuum forming after heating. Currently, most of these structures employ cylinders, hydraulic cylinders, or motors paired with ball screws for mold table lifting. Among these methods, cylinder-driven structures are relatively inexpensive, but they are prone to instability due to fluctuations in the external air supply pressure, affecting product yield. Hydraulic cylinder-driven structures suffer from slow speeds, making it difficult to adjust the fit between the upper and lower mold tables, and are also relatively dangerous during operation. As for the existing motor-paired ball screw design, while it offers rapid response and precise vertical positioning, the numerous components lead to cumbersome assembly processes and high manufacturing costs. Therefore, existing technologies have limitations. Utility Model Content

[0004] This utility model was developed to solve the above-mentioned problems, and its purpose is to provide an upper mold stage drive structure for a vacuum forming equipment.

[0005] This utility model provides an upper mold stage drive structure for a vacuum forming equipment, characterized by including: a mounting platform, which is rectangular in shape.

[0006] Multiple connecting rods can be slidably installed on the mounting platform, and at least two connecting rods are arranged opposite each other on the mounting platform along a horizontal or vertical line of symmetry.

[0007] The upper mold platform is located at one end of multiple connecting rods and below the mounting platform.

[0008] A top plate, located at the other end of multiple connecting rods, is used to prevent the connecting rods from slipping off.

[0009] The drive assembly includes at least one drive element, two bearings, two bearing housings, and two gears. The drive element is mounted on a mounting platform and located between the two opposing connecting rods. The drive element has two output shafts, with two bearings respectively sleeved on the ends of the two output shafts and mounted on the mounting platform via the two bearing housings. The two gears are respectively mounted on the two output shafts, and the two gears are respectively arranged corresponding to the two opposing connecting rods.

[0010] The outer walls of the two connecting rods, which are arranged opposite each other, are provided with teeth that can mesh with gears, so that the two connecting rods can rise or fall under the drive of the two gears.

[0011] The upper mold stage drive structure of the vacuum forming equipment provided by this utility model also has the following features: a limiting component, including at least two mounting rods and two limiting wheels. The two mounting rods are both set on the mounting platform, and the two mounting rods are corresponding to the two connecting rods that are arranged opposite to each other. The two limiting wheels are respectively set on the other end of the two mounting rods. The two limiting wheels are U-shaped pulleys. The wheel surfaces of the two limiting wheels are in contact with the outer walls of the two connecting rods that are arranged opposite to each other, and the two limiting wheels are arranged opposite to the two gears.

[0012] The upper mold stage drive structure of the vacuum forming equipment provided by this utility model also has the following feature: multiple self-lubricating copper sleeves are installed on the mounting platform, and each connecting rod is installed on the mounting platform through a self-lubricating copper sleeve.

[0013] The upper mold platform drive structure of the vacuum forming equipment provided by this utility model also has the following features: the number of connecting rods is four, two connecting rods are arranged opposite each other on the transverse symmetry line of the installation platform, and the other two connecting rods are arranged opposite each other on the longitudinal symmetry line of the installation platform, and the transverse and longitudinal symmetry lines are orthogonal.

[0014] The upper mold stage drive structure of the vacuum forming equipment provided by this utility model also has the following feature: the drive component is a dual-output shaft motor.

[0015] The upper mold stage drive structure of the vacuum forming equipment provided by this utility model also has the following feature: at least one anti-collision component is provided on the top end of the drive component and the bottom end of the mounting platform, and the anti-collision component is made of rubber.

[0016] The upper mold stage drive structure of the vacuum forming equipment provided by this utility model also has the following feature: a through hole is provided on the top plate at the position corresponding to the drive component.

[0017] Functions and effects of utility models

[0018] According to the upper mold stage drive structure of the vacuum forming equipment involved in this utility model, gear and rack transmission is realized through gears and connecting rods, thereby achieving precise and stable lifting and lowering of the upper mold stage, while reducing the maintenance cost of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the present invention from another perspective.

[0021] Explanation of reference numerals in the attached figures:

[0022] 10. Mounting platform; 20. Connecting rod; 30. Upper mold table; 40. Top plate; 41. Through hole; 50. Drive assembly; 51. Drive component; 52. Bearing; 53. Bearing seat; 54. Gear; 60. Limiting assembly; 61. Mounting rod; 62. Limiting wheel; 70. Self-lubricating copper sleeve; 80. Anti-collision component. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments are described in detail with reference to the accompanying drawings.

[0024] Example

[0025] Figure 1 This is a structural schematic diagram of the present invention. Figure 2 This is a structural schematic diagram of the present invention from another perspective.

[0026] like Figure 1 and Figure 2 As shown, this embodiment provides a driving structure for the upper mold stage 30 of a vacuum forming equipment, including: a mounting platform 10, multiple connecting rods 20, an upper mold stage 30, a top plate 40, a driving assembly 50, a limiting assembly 60, and a self-lubricating copper sleeve 70.

[0027] like Figure 1 and Figure 2 As shown, the mounting platform 10 is rectangular and is used to fix multiple connecting rods 20, drive assembly 50 and limit assembly 60.

[0028] like Figure 1 and Figure 2 As shown, multiple connecting rods 20 can be slidably mounted on the mounting platform 10, and at least two connecting rods 20 are arranged opposite each other on the mounting platform 10 along a transverse or longitudinal line of symmetry. The outer walls of the two oppositely arranged connecting rods 20 are provided with teeth that can mesh with the gears 54 described below, allowing the two connecting rods 20 to rise or fall under the drive of the two gears 54.

[0029] In this embodiment, the number of connecting rods 20 is preferably four. Two connecting rods 20 are arranged opposite each other on the transverse symmetry line of the mounting platform 10, and the other two connecting rods 20 are arranged opposite each other on the longitudinal symmetry line of the mounting platform 10, with the transverse symmetry line and the longitudinal symmetry line being orthogonal. In use, the four connecting rods 20 are symmetrically arranged, which can provide stable support and connection, thereby ensuring the practical effect of this utility model.

[0030] In this embodiment, a plurality of self-lubricating copper sleeves 70 are mounted on the mounting platform 10, and each connecting rod 20 is mounted on the mounting platform 10 through a self-lubricating copper sleeve 70. The top height of the self-lubricating copper sleeve 70 is lower than the top height of the mounting rod 61 described below, thereby preventing the self-lubricating copper sleeve 70 from affecting the use of the limiting wheel 62.

[0031] like Figure 1 and Figure 2 As shown, the upper mold platform 30 is located on one end of the multiple connecting rods 20 and below the mounting platform 10.

[0032] like Figure 1 and Figure 2 As shown, the top plate 40 is located on the other end of the multiple connecting rods 20 to prevent the multiple connecting rods 20 from slipping off.

[0033] In this embodiment, a through hole 41 is provided on the top plate 40 at the position corresponding to the driving member 51, and the area of ​​the through hole 41 is larger than the area occupied by the driving member 51. Therefore, when the top plate 40 is raised and lowered with the connecting rod 20, the top plate 40 will not collide with the driving member 51, thereby ensuring the stability of this utility model during use.

[0034] like Figure 1 and Figure 2 As shown, the drive assembly 50 includes at least one drive member 51, two bearings 52, two bearing 52 seats, and two gears 54. The drive member 51 is mounted on the mounting platform 10 and located between the two oppositely arranged connecting rods 20. The drive member 51 has two output shafts. The two bearings 52 are respectively sleeved on the ends of the two output shafts and mounted on the mounting platform 10 through the two bearing 52 seats. The two gears 54 are respectively mounted on the two output shafts, and the two gears 54 are respectively arranged corresponding to any two oppositely arranged connecting rods 20.

[0035] In this embodiment, the drive unit 51 is preferably a dual-output shaft motor.

[0036] In this embodiment, in order to prevent the upper mold platform 30 and the top plate 40 from colliding with the mounting platform 10 and the driving component 51 after they are raised and lowered, at least one anti-collision component 80 can be provided at the bottom of the mounting platform 10 and the top of the driving component 51. The anti-collision component 80 is made of rubber, thereby avoiding collisions between the upper mold platform 30 and the mounting platform 10, and between the top plate 40 and the driving component 51.

[0037] like Figure 1 and Figure 2 As shown, the limiting assembly 60 includes at least two mounting rods 61 and two limiting wheels 62. The two mounting rods 61 are both mounted on the mounting platform 10, and the two mounting rods 61 are corresponding to the two connecting rods 20 arranged opposite to each other. The two limiting wheels 62 are respectively mounted on the other end of the two mounting rods 61. The two limiting wheels 62 are U-shaped pulleys. The wheel surfaces of the two limiting wheels 62 are in contact with the outer walls of the two connecting rods 20 arranged opposite to each other, and the two limiting wheels 62 are arranged opposite to the two gears 54.

[0038] In this embodiment, the surfaces of the two limiting wheels 62 are respectively in contact with the outer wall of the toothless surface of the connecting rod 20, that is, there is no contact with the meshing area of ​​the connecting rod 20. Thus, the limiting wheels 62 and the gear 54 can cooperate with each other, avoiding unilateral jamming or vibration of the connecting rod 20, and without affecting the gear 54's ability to drive the connecting rod 20 to rise and fall by passing through the teeth on the connecting rod 20.

[0039] The role and effect of the embodiments

[0040] According to the upper mold stage drive structure of the vacuum forming equipment involved in this utility model, gear and rack transmission is realized through gears and connecting rods, thereby achieving precise and stable lifting and lowering of the upper mold stage, while reducing the maintenance cost of the equipment.

[0041] The above embodiments are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model.

Claims

1. A drive structure for the upper mold table of a vacuum forming equipment, characterized in that, include: The installation platform is rectangular in shape. Multiple connecting rods are slidably mounted on the mounting platform, and at least two of the connecting rods are arranged opposite each other on the mounting platform along a transverse or longitudinal line of symmetry. The upper mold platform is located on one end of the multiple connecting rods and below the mounting platform. A top plate, located at the other end of the plurality of connecting rods, is used to prevent the plurality of connecting rods from slipping off. The drive assembly includes at least one drive element, two bearings, two bearing housings, and two gears. The drive element is mounted on the mounting platform and located between the two opposing connecting rods. The drive element has two output shafts. The two bearings are respectively sleeved on the ends of the two output shafts and mounted on the mounting platform via the two bearing housings. The two gears are respectively mounted on the two output shafts, and the two gears are respectively arranged corresponding to the two opposing connecting rods. The outer walls of the two connecting rods arranged opposite each other are provided with teeth that can mesh with the gears, so that the two connecting rods can rise or fall under the drive of the two gears.

2. The upper mold stage driving structure of the vacuum forming equipment according to claim 1, characterized in that, Also includes: The limiting assembly includes at least two mounting rods and two limiting wheels. The two mounting rods are both disposed on the mounting platform and are corresponding to the two connecting rods arranged opposite to each other. The two limiting wheels are respectively disposed on the other end of the two mounting rods. The two limiting wheels are U-shaped pulleys. The wheel surfaces of the two limiting wheels are in contact with the outer walls of the two connecting rods arranged opposite to each other, and the two limiting wheels are arranged opposite to the two gears.

3. The upper mold stage driving structure of the vacuum forming equipment according to claim 1, characterized in that: in, Multiple self-lubricating copper sleeves are installed on the installation platform, and each connecting rod is installed on the installation platform through one of the self-lubricating copper sleeves.

4. The upper mold stage driving structure of the vacuum forming equipment according to claim 1, characterized in that: in, The number of connecting rods is four. Two of the connecting rods are arranged opposite each other on the transverse symmetry line of the installation platform, and the other two connecting rods are arranged opposite each other on the longitudinal symmetry line of the installation platform, with the transverse and longitudinal symmetry lines being orthogonal.

5. The upper mold stage driving structure of the vacuum forming equipment according to claim 1, characterized in that: in, The driving component is a dual-output shaft motor.

6. The upper mold stage driving structure of the vacuum forming equipment according to claim 1, characterized in that: in, At least one anti-collision component is provided on the top of the drive component and the bottom of the mounting platform. The anti-collision component is made of rubber.

7. The upper mold stage driving structure of the vacuum forming equipment according to claim 1, characterized in that: in, A through hole is provided on the top plate at the position corresponding to the driving component.

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