Automatic cutting machine for foam sheets

Abstract

The utility model discloses an automatic foam sheet cutting machine which comprises a working platform horizontally extending front and back, side frames are arranged on the left side and the right side of the working platform respectively, a cutting hole horizontally extending left and right is formed in the working platform, a cutting knife is arranged over the cutting hole, and the cutting knife is arranged on the working platform. A linear reciprocating motion mechanism for controlling the cutting knife to vertically move up and down is arranged on the cutting knife, guide rails vertically extending up and down are arranged on the left side and the right side of the cutting knife respectively, a sliding block is arranged between the guide rails and the cutting knife, one end of the sliding block is connected with the cutting knife, and the other end of the sliding block is connected to the guide rails in a sliding mode. A driving roller close to the cutting hole and a driven roller away from the cutting hole are rotationally connected to the side frame, a driving belt located above the working platform is in transmission connection with the driven roller and the driving roller, and one end of the driving roller is in transmission connection with a ratchet gear assembly. The cutting machine has the advantages of being synchronous in conveying and cutting and accurate in cutting size, and is complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, and more specifically, to an automatic cutting machine for foam sheets. Background Art

[0002] The rolled foam sheets need to be cut into equal lengths before they can be made into foam sheets that are convenient for transportation and packaging. Traditional strip-shaped foam sheets need to be transported first and then cut, and the transport distance determines the cutting length of the foam sheets. However, since the transport operation and the cutting operation are both controlled by an independent power source, there is an error in the movement of the two, resulting in the problem of different lengths of the cut foam sheets, large deviation in length size, and poor overall effect. Based on this, the utility model proposes an automatic foam sheet cutting machine. Utility Model Content

[0003] The utility model aims to overcome the above-mentioned deficiencies in the prior art and to provide an automatic foam sheet cutting machine, which has the characteristics of synchronous transmission and cutting and precise cutting size.

[0004] To solve the above technical problems, the purpose of the utility model is achieved as follows: the utility model relates to an automatic foam sheet cutting machine, comprising a working platform extending horizontally forward and backward, side frames are respectively provided on the left and right sides of the working platform, a cutting hole extending horizontally left and right is opened on the working platform, a cutting knife is provided just above the cutting hole, a linear reciprocating motion mechanism for controlling the cutting knife to move vertically up and down is provided on the cutting knife, guide rails extending vertically up and down are respectively provided on the left and right sides of the cutting knife, a slider is provided between the guide rail and the cutting knife, one end of the slider is connected to the cutting knife, and the other end is slidably connected to the guide rail, an active roller close to the cutting hole and a driven roller away from the cutting hole are rotatably connected on the side frame, a driving belt located above the working platform is transmission-connected to the driven roller and the active roller, and a ratchet gear assembly is transmission-connected to one end of the active roller;

[0005] The ratchet gear assembly includes an inner wheel coaxially arranged at one end of the active roller, an outer wheel is arranged outside the inner wheel, the outer wheel is rotatably connected to the inner wheel, gear teeth are arranged on the outer wall of the outer wheel, a rack extending vertically up and down is meshed on the gear teeth, the rack is fixed on the slider, ratchet grooves are arranged on the inner wall of the outer wheel, a ratchet pawl rotatably connected to the inner wheel is embedded in the ratchet groove, an elastic member is arranged between the ratchet pawl and the inner wheel, when the rack moves downward, the outer wheel does not drive the inner wheel to rotate; when the rack moves upward, the outer wheel drives the inner wheel to rotate.

[0006] The utility model is further configured as follows: a crossbeam close to the top is arranged between the guide rails, and the linear reciprocating motion mechanism is arranged on the crossbeam.

[0007] The utility model is further configured as follows: the linear reciprocating motion mechanism is a pneumatic push rod.

[0008] The utility model is further configured as follows: the elastic member is a compression spring.

[0009] To sum up, the utility model has the following beneficial effects: the automatic foam sheet cutting machine involved in the utility model, by adding a rack and a ratchet gear assembly that transmits it, allows the cutting knife to replenish foam sheets at the same time when it is resetting and moving upward. The two are synchronized, so that the cut foam sheets can be of equal length. The transmission and cutting are synchronized, the cutting size is accurate, the overall function is complete, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 It is a partial structural schematic diagram of the utility model;

[0012] Figure 3 This is a schematic diagram of the overall structure of the ratchet gear assembly of the utility model;

[0013] Figure 4 It is a partial structural schematic diagram of the utility model for reflecting the ratchet gear assembly. DETAILED DESCRIPTION

[0014] In order to enable those skilled in the art to better understand the technical solution of the utility model, the preferred implementation scheme of the utility model is described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the utility model, rather than limiting the patent requirements of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0015] The utility model is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0016] Example 1

[0017] See also Figures 1 to 4As shown, an automatic cutting machine for foam sheets involved in this embodiment comprises a working platform 1 extending horizontally forward and backward, side frames 2 are respectively provided on the left and right sides of the working platform 1, a cutting hole 3 extending horizontally left and right is opened on the working platform 1, a cutting knife 4 is provided just above the cutting hole 3, a linear reciprocating motion mechanism 5 for controlling the cutting knife 4 to move vertically up and down is provided on the cutting knife 4, guide rails 6 extending vertically up and down are respectively provided on the left and right sides of the cutting knife 4, a slider 12 is provided between the guide rail 6 and the cutting knife 4, one end of the slider 12 is connected to the cutting knife 4, and the other end is slidably connected to the guide rail 6, an active roller 7 close to the cutting hole and a driven roller 8 away from the cutting hole are rotatably connected on the side frame 2, a driving belt 9 located above the working platform is transmission-connected to the driven roller 8 and the active roller 7, and a ratchet gear assembly 10 is transmission-connected to one end of the active roller 7;

[0018] The ratchet gear assembly 10 includes an inner wheel 101 coaxially arranged at one end of the active roller 7, an outer wheel 102 is arranged outside the inner wheel 101, and the outer wheel 102 is rotatably connected to the inner wheel 101. Gear teeth 103 are arranged on the outer wall of the outer wheel 102, and a rack 11 extending vertically up and down is meshed on the gear teeth 103. The rack 11 is fixed on the slider 12, and ratchet grooves 104 are arranged on the inner wall of the outer wheel 102. A ratchet pawl 105 rotatably connected to the inner wheel 101 is embedded in the ratchet groove 104, and an elastic member 106 is arranged between the ratchet pawl 105 and the inner wheel 101. When the rack 11 moves downward, the outer wheel 102 does not drive the inner wheel 101 to rotate; when the rack 11 moves upward, the outer wheel 102 drives the inner wheel 101 to rotate.

[0019] Furthermore, a crossbeam (not shown) close to the top is provided between the guide rails 6, and the linear reciprocating motion mechanism 5 is provided on the crossbeam.

[0020] Furthermore, the linear reciprocating motion mechanism 5 is a pneumatic push rod.

[0021] Furthermore, the elastic member 106 is a compression spring.

[0022] In this embodiment, first, the strip-shaped foam sheet is laid flat along the length direction of the working platform 1, and the foam sheet is located between the driving belt 9 and the working platform 1. When the driving belt 9 is driven, the foam sheet can be driven together.

[0023] When cutting the foam sheet, the linear reciprocating motion mechanism 5 controls the cutting knife 4 to move downward. During this period, the slider 12 slides on the guide rail 6 and the rack 11 moves downward with the slider 12 until the cutting knife 4 rushes into the cutting hole 3 to complete the cutting of the foam sheet. The foam sheet separated from the body is a foam sheet. When the rack 11 moves downward, the outer wheel 102 meshing with it rotates accordingly. Due to the arrangement direction of the ratchet groove 104 and the ratchet pawl 105, the inner wheel 101 does not rotate relative to the outer wheel 102 at this time. When the cutting knife 4 is reset and moves upward, the rack 11 is also moved upward, and the outer wheel 102 meshing therewith is used for transmission, and under the joint action of the ratchet groove 104 and the ratchet pawl 105, the inner wheel 101 and the outer wheel 102 rotate synchronously, and the active roller 7 is driven to rotate, and the driving belt 9 and the driven roller 8 are used for transmission, and the foam sheet laid on the working platform 1 is driven to move forward. When the cutting knife 4 is reset, the supply of the foam sheet is stopped, and the above-mentioned cutting operation is repeated, and this cycle is repeated.

[0024] The automatic foam sheet cutting machine involved in the utility model is equipped with a rack and a ratchet gear assembly that drives it, so that the cutting knife can simultaneously supply foam sheets when it is resetting and moving upward. The two are synchronized, so that the foam sheets cut can be of equal length. The transmission and cutting are synchronized, the cutting size is accurate, the overall function is complete, and the practicability is strong.

[0025] Unless otherwise specified, in the present invention, the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicating orientation or positional relationship are based on the orientation or positional relationship actually shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood in combination with the embodiments and according to specific circumstances.

[0026] Unless otherwise clearly specified and limited, in the present invention, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An automatic cutting machine for foam sheets, comprising a horizontally extending work platform, with side frames provided on the left and right sides of the work platform, characterized in that: The working platform is provided with a cutting hole extending horizontally to the left and right, a cutting knife is provided just above the cutting hole, and a linear reciprocating motion mechanism for controlling the cutting knife to move vertically up and down is provided on the cutting knife, guide rails extending vertically to the left and right sides of the cutting knife are respectively provided, a slider is provided between the guide rail and the cutting knife, one end of the slider is connected to the cutting knife, and the other end is slidably connected to the guide rail, a driving roller close to the cutting hole and a driven roller away from the cutting hole are rotatably connected on the side frame, a driving belt located above the working platform is transmission-connected to the driven roller and the driving roller, and a ratchet gear assembly is transmission-connected to one end of the driving roller; The ratchet gear assembly includes an inner wheel coaxially arranged at one end of the active roller, an outer wheel is arranged outside the inner wheel, the outer wheel is rotatably connected to the inner wheel, gear teeth are arranged on the outer wall of the outer wheel, a rack extending vertically up and down is meshed on the gear teeth, the rack is fixed on the slider, ratchet grooves are arranged on the inner wall of the outer wheel, a ratchet pawl rotatably connected to the inner wheel is embedded in the ratchet groove, an elastic member is arranged between the ratchet pawl and the inner wheel, when the rack moves downward, the outer wheel does not drive the inner wheel to rotate; when the rack moves upward, the outer wheel drives the inner wheel to rotate.

2. The automatic foam sheet cutting machine according to claim 1, characterized in that: A crossbeam close to the top is arranged between the guide rails, and the linear reciprocating motion mechanism is arranged on the crossbeam.

3. The automatic foam sheet cutting machine according to claim 2, characterized in that: The linear reciprocating motion mechanism is a pneumatic push rod.

4. The automatic foam sheet cutting machine according to any one of claims 1 to 3, characterized in that: The elastic member is a compression spring.

Images