A bicycle seat foam shaping device

Abstract

The invention relates to the technical field of plastic molding, and in particular to a bicycle seat cushion foam shaping device, comprising a frame, a driving member and a cutter head; a support block is arranged on the frame, a workpiece is sleeved on the support block and moves horizontally relative to the support block; the cutter head is rotatably mounted on the frame around a horizontal axis, and the rotation axis is perpendicular to the moving direction of the workpiece relative to the support block; the cutter head fits the side surface of the support block, and the rotation center of the cutter head is in the same horizontal plane as the upper end of the support block; when the driving member drives the cutter head to swing back and forth, the burrs of the workpiece are cut alternately from top to bottom and from bottom to top, compared with the prior art in which the cutter head reciprocates up and down for cutting, the deformation fluctuation of the cutting position is smaller, and when cutting from top to bottom, part of the deformation of the cutting position caused by cutting from bottom to top can be offset, and when cutting from bottom to top, part of the deformation of the cutting position caused by cutting from top to bottom can be offset, so that the deformation of the edge after cutting is smaller and more flat and beautiful.

Description

Technical Field

[0001] The invention relates to the technical field of plastic molding, and in particular to a bicycle seat cushion foam shaping device. Background Art

[0002] Bicycle seat cushions are usually made of polyurethane foam. After the foaming is completed, the internal structure has been formed, but the external shape may exceed the expected size due to the expansion during the foaming process. Therefore, it is necessary to trim it to ensure that the size and shape of the seat cushion meet the design specifications, so as to facilitate the subsequent wrapping of leather goods. In the prior art, a trimming machine is usually used to trim the seat cushion foam. The operator trims the seat cushion foam with a blade that moves back and forth up and down. However, since the edge of the foam is thin, the edge of the trimmed seat cushion foam will deform as the blade moves up and down, affecting the appearance of the trimmed seat cushion. Summary of the invention

[0003] The invention provides a bicycle seat cushion foam shaping device to solve the problem that deformation is easily generated at the edge of a workpiece when the existing trimming machine trims the burrs.

[0004] A bicycle seat foam shaping device of the present invention adopts the following technical solution:

[0005] A bicycle seat foam shaping device comprises a frame, a driving member and a cutter head; a support block is arranged on the frame, a workpiece is sleeved on the support block and moves horizontally relative to the support block; the cutter head is mounted on the frame for rotation around a horizontal axis, and the rotation axis is perpendicular to the movement direction of the workpiece relative to the support block; the cutter head is fitted to the side surface of the support block, and the rotation center of the cutter head is in the same horizontal plane as the upper end of the support block; the driving member is used to drive the cutter head to swing back and forth.

[0006] Optionally, a rotating block is rotatably mounted on the frame, and the cutter head is slidably mounted on the rotating block and rotates synchronously with the rotating block; an inclined groove is provided on the frame, the inclined groove is located above the rotating block, and is inclined relative to the moving direction of the workpiece relative to the support block; one end of the inclined groove on the rear side in the moving direction of the workpiece is higher than the other end; the cutter head is slidably and rotatably mounted on the inclined groove.

[0007] Optionally, a sliding shaft is fixed on the cutter head, and the sliding shaft is a cylindrical shaft and is slidably mounted in the inclined groove and can rotate in the inclined groove.

[0008] Optionally, the cutter head includes a mounting portion and a cutting portion, the mounting portion and the cutting portion are arranged at intervals in the horizontal direction and fixedly connected, and the cutting portion is located between the supporting block and the mounting portion, the mounting portion is slidably matched with the rotating block, and the cutting portion is used to cut the workpiece.

[0009] Optionally, a blade is provided on the side of the cutting part that contacts the workpiece before; the side of the cutting part close to the support block is flat, and a bevel is provided on the side close to the mounting part and on one end close to the blade, and the bevel is used to guide the cut burrs to pass between the mounting part and the cutting part.

[0010] Optionally, the support block is a conical block, and the axis of the conical surface is parallel to the rotation axis of the cutter head, and the end of the support block close to the cutter head is the large end.

[0011] Optionally, the support block is rotatably mounted on the frame around its own axis, and a first motor for driving the support block to rotate is provided on the frame.

[0012] Optionally, the driving member includes a second motor, which is a motor capable of forward and reverse reciprocating rotation, and the second motor drives the rotating block to rotate.

[0013] Optionally, the rotating block includes a sliding part and a rotating part which are fixedly connected, the sliding part and the mounting part are slidably matched and surface-contacted; the rotating part and the output shaft of the second motor are connected for transmission via a transmission belt.

[0014] Optionally, the frame includes a base, a first support arm and a second support arm, the first support arm is fixed to the upper side of the base, one end of the second support arm is mounted on the first support arm, and the other end is suspended for mounting a cutter head and a drive member.

[0015] The beneficial effect of the present invention is that when the driving part of the bicycle seat foam shaping device of the present invention drives the cutter head to swing back and forth, the burrs of the workpiece are cut alternately from top to bottom and from bottom to top. Compared with the prior art in which the cutter head moves up and down to cut, the deformation fluctuation of the cutting position is smaller, and when cutting from top to bottom, part of the deformation of the cutting position caused by cutting from bottom to top can be offset, and when cutting from bottom to top, part of the deformation of the cutting position caused by cutting from top to bottom can be offset, so that the deformation of the edge after cutting is smaller and more flat and beautiful.

[0016] Furthermore, by providing an inclined groove, the cutter head moves in the vertical direction opposite to the swinging direction while it swings, thereby further reducing the deformation of the cutting position of the workpiece caused by the cutter head, so that the edge deformation after cutting is further reduced; and the movement of the cutter head in the vertical direction can perform sliding cutting on the burrs, thereby improving the cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a bicycle seat foam shaping device of the present invention;

[0019] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0020] Figure 3 It is a schematic diagram of the overall structure of an embodiment of a bicycle seat foam shaping device of the present invention;

[0021] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0022] In the figure: 100, frame; 110, support block; 120, rotating block; 121, sliding part; 122, rotating part; 130, inclined groove; 140, base; 150, first support arm; 160, second support arm; 200, driving member; 300, cutter head; 310, sliding shaft; 320, mounting part; 330, cutting part. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] An embodiment of a bicycle seat foam shaping device of the present invention is as follows Figures 1 to 4 As shown, it includes a frame 100 , a driving member 200 and a cutter head 300 .

[0025] A support block 110 is disposed on the frame 100 , and the workpiece is sleeved on the support block 110 and moves horizontally relative to the support block 110 .

[0026] The cutter head 300 is rotatably mounted on the frame 100 around a horizontal axis, and the rotation axis is perpendicular to the moving direction of the workpiece relative to the support block 110; the cutter head 300 fits the side of the support block 110, and the rotation center of the cutter head 300 is in the same horizontal plane as the upper end of the support block 110.

[0027] The driving member 200 is used to drive the cutter head 300 to swing back and forth.

[0028] During use, the operator puts the workpiece on the support block 110 and pushes the workpiece to move. When the driving member 200 drives the cutter head 300 to swing back and forth, the burrs of the workpiece are cut alternately from top to bottom and from bottom to top. Compared with the prior art in which the cutter head 300 reciprocates up and down for cutting, the deformation fluctuation of the cutting position is smaller, and when cutting from top to bottom, part of the deformation of the cutting position caused by cutting from bottom to top can be offset, and when cutting from bottom to top, part of the deformation of the cutting position caused by cutting from top to bottom can be offset, so that the deformation of the edge after cutting is smaller and more smooth and beautiful.

[0029] In this embodiment, a rotating block 120 is rotatably mounted on the frame 100, and a cutter head 300 is slidably mounted on the rotating block 120 and rotates synchronously with the rotating block 120. An inclined slot 130 is provided on the frame 100, and the inclined slot 130 is located above the rotating block 120 and is inclined relative to the moving direction of the workpiece relative to the support block 110; one end of the inclined slot 130 located at the rear side in the moving direction of the workpiece is higher than the other end; the cutter head 300 is slidably and rotatably mounted on the inclined slot 130. Specifically, when the cutter head 300 swings from top to bottom for cutting relative to the workpiece, it can move upward under the guidance of the inclined slot 130, thereby reducing the deformation of the workpiece cutting position when the cutter head 300 swings downward; when the cutter head 300 swings from bottom to top for cutting relative to the workpiece, it can move downward under the guidance of the inclined slot 130, thereby reducing the deformation of the workpiece cutting position when the cutter head 300 swings upward. By providing the inclined groove 130, the cutter head 300 moves in the vertical direction in the opposite direction of its swinging while swinging, thereby further reducing the deformation of the cutting position of the workpiece caused by the cutter head 300, so that the edge deformation after cutting is further reduced; and the movement of the cutter head 300 in the vertical direction can perform sliding cutting on the burrs, thereby improving the cutting effect.

[0030] In this embodiment, a sliding shaft 310 is fixed on the cutter head 300 . The sliding shaft 310 is a cylindrical shaft and is slidably mounted in the inclined groove 130 and can rotate in the inclined groove 130 .

[0031] In this embodiment, the cutter head 300 includes a mounting portion 320 and a cutting portion 330, which are arranged at intervals in the horizontal direction and fixedly connected, and the cutting portion 330 is located between the support block 110 and the mounting portion 320; wherein the distribution direction of the mounting portion 320, the cutting portion 330 and the support block 110 is perpendicular to the moving direction of the workpiece relative to the support block 110. The mounting portion 320 is slidably matched with the rotating block 120, the sliding shaft 310 is fixedly arranged on the mounting portion 320, and the cutting portion 330 is used to cut the workpiece.

[0032] In this embodiment, a blade is provided on the side of the cutting portion 330 that contacts the workpiece before; the side of the cutting portion 330 close to the support block 110 is flat and fits with the support block 110, and a bevel is provided on the side of the cutting portion 330 close to the mounting portion 320 and on one end close to the blade, and the bevel is used to guide the cut burrs to pass between the mounting portion 320 and the cutting portion 330.

[0033] In this embodiment, the support block 110 is a conical block, and the axis of the cone surface is parallel to the rotation axis of the cutter head 300 . The end of the support block 110 close to the cutter head 300 is the large end, and the end surface of the large end is in contact with the cutting portion 330 .

[0034] In this embodiment, the support block 110 is rotatably installed on the frame 100 around its own axis, and a first motor (not shown in the figure) is provided on the frame 100 for driving the support block 110 to rotate. When the support block 110 rotates, it can further promote the movement of the workpiece and assist the operator to move the workpiece for trimming.

[0035] In this embodiment, the driving member 200 includes a second motor, which is a motor capable of reciprocating forward and reverse rotation, and the second motor drives the rotating block 120 to rotate. Specifically, the rotating block 120 includes a sliding portion 121 and a rotating portion 122 that are fixedly connected, and the sliding portion 121 is slidably matched with the mounting portion 320 and is in surface contact; the rotating portion 122 is connected to the output shaft of the second motor through a transmission belt for transmission. In some other embodiments, the rotating portion 122 and the output shaft of the second motor can also be connected to the transmission through a gear set.

[0036] In this embodiment, the frame 100 includes a base 140, a first support arm 150 and a second support arm 160. The first support arm 150 is fixed to the upper side of the base 140, and one end of the second support arm 160 is mounted on the first support arm 150, and the other end is suspended for mounting the cutter head 300 and the driving member 200. Preferably, the first support arm 150 is tilted, and the two ends of the second support arm 160 are respectively located on both sides of the connection position between the first support arm 150 and the base 140, so that the first support arm 150 provides more stable support for the second support arm 160, and sufficient operating space is reserved for the suspended end of the second support arm 160.

[0037] When the bicycle seat foam shaping device of the present invention is used, the first motor and the second motor are started, the first motor drives the support block 110 to rotate, and the tangent direction of the rotation direction of the upper end of the support block 110 is consistent with the direction in which the workpiece needs to move; the second motor drives the cutter head 300 to rotate back and forth while moving up and down. When trimming is required, the operator puts the workpiece outside the support block 110, and the inner circle of the workpiece rests on the upper end of the support block 110, wherein the size of the support block 110 is smaller than the workpiece. The workpiece moves under the driving force of the operator and the rotation of the support block 110, and the cutting part 330 of the cutter head 300 cuts the workpiece during the swinging and up and down movement process, and the cut burrs enter between the cutting part 330 and the mounting part 320 along the inclined surface of the cutting part 330, and the trimming is completed after the required cutting position of the workpiece completely passes through the cutter head 300.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bicycle seat foam shaping device, characterized in that: It includes a frame, a driving part and a cutter head; A support block is provided on the frame, and the workpiece is sleeved on the support block and moves horizontally relative to the support block; The cutter head is mounted on the frame so as to rotate around a horizontal axis, and the rotation axis is perpendicular to the moving direction of the workpiece relative to the support block; the cutter head fits the side surface of the support block, and the rotation center of the cutter head and the upper end of the support block are in the same horizontal plane; The driving member is used to drive the cutter head to swing back and forth; A rotating block is rotatably mounted on the frame, and a cutter head is slidably mounted on the rotating block and rotates synchronously with the rotating block; an inclined slot is arranged on the frame, the inclined slot is located above the rotating block, and is inclined relative to the moving direction of the workpiece relative to the supporting block; one end of the inclined slot located at the rear side in the moving direction of the workpiece is higher than the other end; the cutter head is slidably and rotatably mounted on the inclined slot; A sliding shaft is fixed on the cutter head, and the sliding shaft is a cylindrical shaft and is slidably mounted in the inclined groove and can rotate in the inclined groove; The cutter head comprises a mounting portion and a cutting portion, the mounting portion and the cutting portion are arranged at intervals in the horizontal direction and are fixedly connected, and the cutting portion is located between the supporting block and the mounting portion, the mounting portion is slidably matched with the rotating block, and the cutting portion is used to cut the workpiece; The driving member includes a second motor, which is a motor capable of reciprocating forward and reverse rotation, and the second motor drives the rotating block to rotate; The rotating block comprises a sliding part and a rotating part which are fixedly connected. The sliding part and the mounting part are slidably matched and surface-contacted. The rotating part and the output shaft of the second motor are connected and driven by a transmission belt.

2. A bicycle seat foam shaping device according to claim 1, characterized in that: A blade is arranged on the side of the cutting part that contacts the workpiece before; a plane is arranged on the side of the cutting part close to the support block, and a chamfer is arranged on the side close to the mounting part and on one end close to the blade, and the chamfer is used to guide the cut burrs to pass between the mounting part and the cutting part.

3. A bicycle seat foam shaping device according to claim 1, characterized in that: The support block is a conical block, and the axis of the conical surface is parallel to the rotation axis of the cutter head. The end of the support block close to the cutter head is the large end.

4. A bicycle seat foam shaping device according to claim 3, characterized in that: The support block is rotatably mounted on the frame around its own axis, and a first motor for driving the support block to rotate is arranged on the frame.

5. The bicycle seat foam shaping device according to claim 1, characterized in that: The frame includes a base, a first support arm and a second support arm. The first support arm is fixed to the upper side of the base. One end of the second support arm is installed on the first support arm, and the other end is suspended for installing a cutter head and a driving member.

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